Barrett Communication 4050HF 4050 HF Transceiver User Manual
Barrett Communication Pty. Ltd. 4050 HF Transceiver
user manual

BCM40500/30
© Barrett Communications
+HDG2IÀFH
Barrett Communications Pty Ltd 
47 Discovery Drive, Bibra Lake, WA 6163 Australia 
Tel: +61 8 9434 1700  Fax: +61 8 9418 6757 
Email: information@barrettcommunications.com.au
www.barrettcommunications.com.au
Operating and Installation 
Manual
Barrett 4050 HF SDR Transceiver

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
2
Contents
Introduction ............................................................................................................ 12
Terms & Abbreviations ....................................................................................................13
Exploring the 4050 HF Transceiver .........................................................................15
Transceiver Front Panel ...................................................................................................15
Keypad .............................................................................................................16
Transceiver Front Panel Rear View ..................................................................................16
Transceiver Rear Panel ....................................................................................................17
Switching the Transceiver On / Off  .................................................................................18
Switching the Transceiver On ...........................................................................18
Switching the Transceiver Off ...........................................................................19
Volume .............................................................................................................................19
Power Button Menus .......................................................................................................20
Capture ............................................................................................................20
Reboot / Shutdown ..........................................................................................21
Resync ..............................................................................................................21
Locking and Unlocking the Screen ..................................................................................21
Display .............................................................................................................................22
Using the Microphone .....................................................................................................24
Programming Functions .........................................................................................25
Program a New Channel from the Front Panel ...............................................................25
Emergency Calls ......................................................................................................26
Receiving an Emergency Call ..........................................................................................27
Barrett Selective Calling System ............................................................................28
Summary of Calling Systems ...........................................................................................28
Selective Call - Selcall........................................................................................29
Selcall Self IDs .............................................................................................29
Selcall Decode .............................................................................................29
Selcall Transmit ...........................................................................................29
Selective Call - Telcall ........................................................................................29
Special Notes for the OEM Selective Call Protocol ............................................30

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
3
Station ID Ranges ............................................................................................................30
Call Key ............................................................................................................................31
Call Type ...........................................................................................................31
Beacon Call .................................................................................................32
Send a Beacon Call ................................................................................32
Receive a Beacon Call ............................................................................32
Selcall .........................................................................................................33
Send a Selcall ........................................................................................33
Receiving a Selcall Directed to Your Transceiver .....................................33
Receiving Allcalls, Group Calls and Sub-group Calls ..............................34
Receiving an Allcall, Group Call or Sub-group Call .................................35
Telcall ..........................................................................................................35
Send a Telcall .........................................................................................35
Last Number Redial ...............................................................................37
Receive a Telcall .....................................................................................37
Pagecall ......................................................................................................38
Send a Pagecall .....................................................................................38
Receive a Pagecall ..................................................................................39
GPS Req ......................................................................................................40
GPS Pos .......................................................................................................41
Hangup  ......................................................................................................42
Status .........................................................................................................43
Requesting Another Station’s Status .....................................................43
Secure .........................................................................................................44
Contacts ...........................................................................................................45
Favourites .........................................................................................................46
Call History .......................................................................................................47
All ...............................................................................................................47
Received .....................................................................................................47
Sent ............................................................................................................48
Menus ......................................................................................................................49
Settings ............................................................................................................................49
Menu Map ........................................................................................................................50
General.............................................................................................................52
Transceiver Name ........................................................................................52
Mic Up / Down Keys ....................................................................................53

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
4
Date and Time ............................................................................................53
Time Zone .............................................................................................54
BITE Test ......................................................................................................54
Language ....................................................................................................54
Security ............................................................................................................55
Hopping PIN ...............................................................................................55
Frequency Hop Rate ....................................................................................56
OEM Secure Type ........................................................................................56
OEM Secure Key ..........................................................................................56
Secure Digital Voice Key ..............................................................................57
Secure Data Key ..........................................................................................57
Secure Calls Hop Rate .................................................................................58
Secure Call Code .........................................................................................58
TC2 Programming Mode .............................................................................58
Labels ...............................................................................................................59
Add a Channel Label ...................................................................................59
Edit a Channel Label ...................................................................................60
Delete a Channel Label ...............................................................................60
Channels ..........................................................................................................60
Search For a Channel ..................................................................................61
Add a Channel ............................................................................................61
Number .................................................................................................62
Label .....................................................................................................62
Rx Frequency .........................................................................................62
Tx Frequency .........................................................................................63
Mode ....................................................................................................63
Tx Power ................................................................................................63
Selcall Format ........................................................................................64
ALE Channel ..........................................................................................64
Antenna Socket .....................................................................................64
Save Channel ..............................................................................................65
Edit a Channel ............................................................................................65
Delete a Channel .........................................................................................66
Contacts ...........................................................................................................66
Sort Contacts ..............................................................................................66
Search Contacts ..........................................................................................67
Add a Contact .............................................................................................67
First Name .............................................................................................68
Surname ................................................................................................68

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
5
ID Type ..................................................................................................68
Four Digit .........................................................................................69
Six Digit ...........................................................................................69
ARINC ..............................................................................................69
ALE 2G Alias ..........................................................................................70
ALE 3G Alias ..........................................................................................70
Email Address ........................................................................................70
Phone Number ......................................................................................71
Favourite ...............................................................................................71
Edit Contact ................................................................................................71
Delete Contact ............................................................................................72
Scan .................................................................................................................72
Scan Rate ....................................................................................................72
Dwell Time ..................................................................................................73
Resume Time ..............................................................................................73
Table Selection ............................................................................................73
Edit Scan Tables ..........................................................................................74
Add a Scan Table ...................................................................................74
Scan Table Name ..............................................................................75
Antenna Socket ...............................................................................75
Scan Table Channel List ....................................................................75
Save a Scan Table ..................................................................................76
Edit a Scan Table ...................................................................................76
Delete a Scan Table ................................................................................76
Mute ................................................................................................................77
Syllabic Sensitivity .......................................................................................77
Signal Strength Level ..................................................................................77
Selcall ...............................................................................................................78
Audio in Tx .................................................................................................78
Preamable Time ..........................................................................................79
Default Int Selcall ID (4 Digits) ....................................................................79
Default Int Selcall ID (6 Digits) ....................................................................79
OEM Privacy Key .........................................................................................80
OEM Selcall ID (4 Digits) .............................................................................80
OEM Selcall ID (6 Digits) .............................................................................80
Selcall Networks..........................................................................................81
Add a Selcall Network ...........................................................................81
Selcall Network Alias ........................................................................82
Selcall Format ..................................................................................82

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
6
4 Digit Selcall ID ...............................................................................82
6 Digit Selcall ID ...............................................................................83
Save a Selcall Network ...........................................................................83
Edit a Selcall Network ............................................................................83
Delete a Selcall Network ........................................................................84
GPS Broadcast Enable .................................................................................84
Transceiver Lock ..........................................................................................85
Audio ...............................................................................................................86
Beep Level ...................................................................................................87
Alarm Audio Level .......................................................................................87
Ring Tones ..................................................................................................88
5[&RQÀJXUDWLRQ .........................................................................................88
7[&RQÀJXUDWLRQ .........................................................................................89
Audio Bandwidth ........................................................................................89
Line Audio ..................................................................................................90
Line Follows Digital Voice ...........................................................................90
Line Out Level .............................................................................................91
Line In Level ................................................................................................91
Audio Record ..............................................................................................91
RF .....................................................................................................................92
Rx Preamp ...................................................................................................92
Tx Over Beep ...............................................................................................93
Transmit Timeout ........................................................................................93
Noise Blanker ..............................................................................................94
Tx Power Level ............................................................................................94
AGC Hang ...................................................................................................95
Broadcast Filter ...........................................................................................95
Preselector ..................................................................................................95
IO .....................................................................................................................96
RS232 Out ..................................................................................................96
RS232 Baud Rate ........................................................................................97
EXT Alarm Type ...........................................................................................97
Antenna 1 Type ...........................................................................................98
Antenna 2 Type ...........................................................................................99
ALE .................................................................................................................100
ALE Set-up Overview .................................................................................100
Combined ALE / Selective Call - Overview .................................................101
ALE State Settings for 2G ..........................................................................101
ALE State .............................................................................................102

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
7
Preset Map ..........................................................................................102
Response Control ................................................................................103
Sounding Control ................................................................................103
Sounding Address ...............................................................................104
LQA Exchange .....................................................................................104
LQA Averaging ....................................................................................105
LQA Decay Rate ...................................................................................105
Threshold Test .....................................................................................106
SINAD Threshold .................................................................................106
BER Threshold .....................................................................................107
ALE State Settings for 3G ..........................................................................107
Voice Link Timeout ..............................................................................108
Data Link Timeout ...............................................................................108
LQA Averaging ....................................................................................108
LSU Mode ............................................................................................109
ALE 3G Channels .................................................................................110
ALE 3G Addresses ................................................................................110
Save the ALE Settings ...............................................................................110
System Info ....................................................................................................111
System Status ...........................................................................................111
Version Information ..................................................................................112
Transceiver Options ...................................................................................113
Enter Option PINs ................................................................................113
4050 Serial Number ..................................................................................114
Call History .....................................................................................................114
Export ............................................................................................................114
Display ...........................................................................................................115
Level of Display Backlight ..........................................................................116
Backlight Timeout .....................................................................................116
Display Timeout Behaviour........................................................................116
Transmit Meter Mode ...............................................................................117
Receive Meter Mode .................................................................................117
Temperature Units ....................................................................................117
Network .........................................................................................................118
WiFi Operation Mode................................................................................118
WiFi Client ...........................................................................................118
WiFi Access Point Mode .......................................................................120
WiFI Access Point Setup .................................................................120
WPS Push Button ...........................................................................122

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
8
BoB.................................................................................................................123
BoB Name .................................................................................................123
Network Settings ......................................................................................124
DHCP ...................................................................................................124
IP Address ...........................................................................................125
Network Mask .....................................................................................125
Default Gateway .................................................................................125
Primary DNS ........................................................................................126
Secondary DNS ....................................................................................126
Network Status .........................................................................................127
Import / Update .............................................................................................127
,PSRUW&RQÀJXUDWLRQ ................................................................................128
Program Firmware ....................................................................................129
Channels ...................................................................................................................... ...130
Selecting a Channel ........................................................................................131
Search For a Channel ......................................................................................131
Hop .................................................................................................................................132
Selecting the Hop Band ..................................................................................132
Entering the Security Code .......................................................................132
Security Codes and Bandwidths ..........................................................132
To Enable Hopping Mode ...............................................................................133
To Disable Hopping Mode ..............................................................................133
Tune ................................................................................................................................134
Mode ..............................................................................................................................134
NR ...................................................................................................................................135
Scan ................................................................................................................................135
Selcall Scan .....................................................................................................136
Signal Strength Scan (SSL Scan) .....................................................................136
Voice (Syllabic) Scan .......................................................................................136
Mute ...............................................................................................................................137
Swipe Menu ...................................................................................................................138
Wireless Application .............................................................................................139
Downloading the Barrett SDR Remote Control Head Setup App .................................139
For Windows PCs ............................................................................................139
For iOS and Android Devices ..........................................................................140

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
9
Installing the Barrett SDR Remote Control Head Setup App .......................................140
For Windows PCs ............................................................................................140
For iOS and Android Devices ..........................................................................141
Connecting the Wireless Device to the SDR .................................................................144
Preparing the SDR ..........................................................................................144
Invoking the App ............................................................................................145
Exploring the App ..........................................................................................................146
Disconnecting the Wireless Device from the SDR ........................................................146
Cooling Fan ...........................................................................................................147
Installing the Cooling Fan .............................................................................................147
Connectors ............................................................................................................ 148
Power Connector ...........................................................................................................148
GPS Connector ...............................................................................................................148
Aux Control Head / BoB Connector ................................................................................149
Auxiliary Connector .......................................................................................................149
ATU Connector ...............................................................................................................151
Microphone Connector ..................................................................................................151
Control Head Rear Panel Connector ..............................................................................152
Cooling Fan Connector ..................................................................................................152
6SHFLÀFDWLRQV ........................................................................................................153
General ....................................................................................................................... ....153
Receiver ..........................................................................................................................154
Transmitter ................................................................................................................... ..155
Installation ............................................................................................................156
Mobile Pack  ...................................................................................................................156
Land Based Systems ......................................................................................................159
Fixed Station Installations  ..............................................................................160
Site Selection Recommendations  .............................................................160
Power Supply  ...........................................................................................161
Voltage Drop  ...........................................................................................161
Protection Fuse  ........................................................................................161
Antenna  ...................................................................................................162

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
10
912 Single Wire Broadband Dipoles ....................................................162
912 Multi wire Broadband Dipoles ......................................................165
913 Series Helical Dipoles ....................................................................167
915 Wire Dipole ..................................................................................169
4017 Automatic Tuning Horizontal Dipole Antenna ..................................171
Connection Details for a 4050 Transceiver and 4017 Automatic Tun-
ing Horizontal Dipole Antenna ............................................................172
911 Automatic Antenna Tuner for Base Station Installations  ...................173
Antenna ..............................................................................................173
Transceiver and Tuner Mounting .........................................................173
Ground (Earth) System ........................................................................174
Electrical Checkout ..............................................................................175
Connection Details for a 4050 Transceiver and 911 Automatic 
$QWHQQD7XQHULQD%DVH6WDWLRQ&RQÀJXUDWLRQ ...................................176
4011 Automatic Antenna Tuner for Base Station Installations ..................177
Connection Details for a 4050 Transceiver and 4011 Automatic 
$QWHQQD7XQHULQD%DVH6WDWLRQ&RQÀJXUDWLRQ ...................................178
Mobile Installations ........................................................................................180
Site Selection Recommendations ..............................................................180
Power Wiring  ...........................................................................................181
Earthing ....................................................................................................181
Antenna ....................................................................................................182
Antenna Mounting  ..................................................................................182
Antenna Feed Cables  ...............................................................................182
Voltage Standing Wave Ratio (VSWR)  ......................................................182
Noise Suppression ....................................................................................182
Interference Suppression Kit  ...............................................................183
General Noise Suppression Tips ...........................................................185
2019 Automatic Tuning Mobile HF Antenna .............................................186
Mounting the Barrett 2019 Automatic Tuning Mobile HF Antenna .....186
Antenna Assembly ...............................................................................189
Mounting the Base Spring .............................................................189
Mounting the Whip Sections .........................................................189
Connection Details for a 4050 Transceiver with Mobile Pack and 2019 
Automatic Tuning Mobile HF Antenna .................................................191
Testing the Barrett 2019 Automatic Tuning Mobile HF Antenna ..........192
914 Series Manual Tap Whip Antenna ......................................................193
Installation ..........................................................................................193
Operation Instructions.........................................................................195

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
11
Connection Details for a 4050 Transceiver with Mobile Pack and 914 
Manual Tapped Mobile Antenna  ........................................................196
2018 Mobile Magnetic Loop Antenna ......................................................197
Connection Details for a 4050 Transceiver with Mobile Pack and a 
2018 Mobile Magnetic Loop Antenna .................................................197
Marine Installations .......................................................................................................198
Antenna Selection  .........................................................................................198
Antenna  ........................................................................................................199
Transceiver and Tuner Mounting  ...................................................................199
Ground (Earth) System  ..................................................................................199
Corrosion  ......................................................................................................200
Electrical Checkout .........................................................................................200
Connection Details For a 4050 Transceiver and 911 Automatic Antenna 
Tuner in a Marine Installation .........................................................................201
Overview of HF Operation ....................................................................................203
HF Propagation ..............................................................................................................203
Radio Wave Propagation ...............................................................................................204
Factors Which Affect HF / SSB Communications ...........................................................205
Frequency Selection ........................................................................................205
Time of Day ....................................................................................................205
Weather Conditions .......................................................................................205
Man-made Electrical Interference ...................................................................206
6\VWHP&RQÀJXUDWLRQDQG,QVWDOODWLRQ ...........................................................206
HF Communications Compared with VHF or UHF Short Distance Communications ....206
Compliance ...........................................................................................................207
FCC RF Exposure Compliance Statement ......................................................................207
RF Exposure Warning .....................................................................................................208
FCC Modulation Modes .................................................................................................208
Industry Canada Modulation Modes ............................................................................208
Limited 3 Year Warranty Statement .....................................................................209
Warranty Registration and Technical Support .....................................................210
Warranty Registration Contact Details .........................................................................211
Index .....................................................................................................................212

12
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Introduction
The Barrett 4050 Transceiver is an SDR based HF SSB Transceiver with a fre-
quency range of 1.6 to 30 MHz. The Barrett 4050 is designed using the latest 
technology enabling a physically small package with a full feature complement.
Designed to operate in the most arduous environments, as encountered in off-
road vehicles, vessels and aircraft, the Barrett 4050 will provide many years of 
HIÀFLHQWDQGWURXEOHIUHHVHUYLFH
The Barrett 4050 supports features such as Selective Call (Selcall), direct dial 
WHOHSKRQHFRQQHFWLRQWREDVHVWDWLRQVÀWWHGZLWKWHOHSKRQHLQWHUFRQQHFW
systems (Telcall), GPS location, ALE (Automatic Link Establishment), frequency 
hopping, data transmission and remote diagnostics. These features make the 
Barrett 4050 HF Transceiver one of the most economical and versatile HF Trans-
ceiver available today.
The Barrett 4050 Transceiver caters for increased use of HF data transmission 
for Internet email access and point-to-point data applications, by providing 
a comprehensive data modem interface port, high speed transmit-to-receive 
VZLWFKLQJDKLJKVWDELOLW\IUHTXHQF\VWDQGDUGDQGDQHIÀFLHQWFRROLQJV\VWHP
option.
The Barrett 4050 Transceiver can be operated in either a local (desktop) con-
ÀJXUDWLRQIRUEDVHVWDWLRQDSSOLFDWLRQVRUZLWKWKHDGGLWLRQRIDQLQH[SHQ-
VLYHPRELOHSDFNLQDUHPRWHFRQWUROWUXQNPRXQWFRQÀJXUDWLRQIRUPRELOH
applications. 
The Barrett 4050 Transceiver can be controlled from all major mobile and 
desktop platforms. The Barrett 4050 handset app supports iOS, Android and 
Windows devices for wireless voice and radio control. Full remote control is 
available via the Barrett 4050 Virtual Control Head app, providing unprece-
dented access to all transceiver functionality on Windows and OSX computers, 
iPad and Android tablets.
Operated from either 12 volt (13.8 V) DC or 24 V DC supplies, the transmitter is 
rated at 125 or 150 watt PEP respectively in voice mode and is protected from 
over-voltage or reverse-voltage application.
8SWRFKDQQHOVGHSHQGLQJRQWKHYDULDQWDUHDYDLODEOHWREHÀHOG
or workshop programmable. Auxiliary features such as Selcall, Telcall, scanning, 
mute status, alarm system etc. can be individually enabled or disabled for every 
channel as required to suit your operation.
Teamed with other matching Barrett products which include antennas, power 
supplies, vehicle tracking packages and HF modems, the Barrett 4050 HF Trans-
ceiver becomes a powerful tool, providing solutions to many long distance 
communication requirements.

13
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Please note that this manual describes all the features of the 4050 HF SDR 
Transceiver and that some variants of the 4050 may not have all the features 
installed. 
Terms & Abbreviations
Term / Abbrevi-
ation 'HÀQLWLRQ
ALE Automatic Link Establishment
AM Amplitude Modulation
ARINC A set of standards as established by Aeronautical Radio, 
Incorporated (ARINC).
Call History A list containing details of the last thirty calls received.
CCIR 2QHRIPDQ\SRVVLEOH6HOFDOOIRUPDWVDVGHÀQHGE\WKH
Consultative Committee on International Radio (CCIR).
CW Continuous Wave (used for Morse code)
dB Decibels
dBm Power ratio in decibels (dB) of the measured power refer-
enced to one milliwatt (mW).
DSP Digital Signal Processing
ESU Encryption Synchronisation Unit
FHSS Frequency Hopping Spread Spectrum
FSK Frequency Shift Keying
GPS Global Positioning System
HF High Frequency
,GHQWLÀFDWLRQ
Code
7KHXQLTXHUHIHUHQFHLGHQWLÀFDWLRQ,' 
of a Transceiver (not serial number).
IF Intermediate Frequency
LCD Liquid Crystal Display
LSB Lower Sideband
LUF Lowest Usable Frequency
MUF Maximum Usable Frequency
OEM Original Equipment Manufacturer
OTG On-The-Go (USB)

14
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Term / Abbrevi-
ation 'HÀQLWLRQ
PCB Printed Circuit Board
PEP Peak Envelope Power
PIN 3HUVRQDO,GHQWLÀFDWLRQ1XPEHU
PSTN Public Switched Telephone Network
PTT Press-To-Talk button
Receive Only  
Channel
A channel that receives calls but does not transmit calls.
Revertive Tone / 
Signal
An acknowledgement signal automatically  
transmitted from a station receiving a Selcall.
RF Radio Frequency
RFDS Royal Flying Doctor Service (Selcall Format)
Rx Receive
Scan Table A list of channels used when scanning for incoming calls.
Selcall Selective Calls
SCF Suppressed Carrier Frequency
SSL Signal Strength Level
Station ID The ID of the station being called  
(the receiving station’s Self ID).
Self ID 7KHSURJUDPPHGDGGUHVVLGHQWLÀFDWLRQQXPEHURIDORFDO
station. (Used by other stations to call you.)
SMS Short Message Service
SSB Single Sideband (a transmission format)
Telcall Telephone call using the Selective Call protocol.
Transmit Channel A channel that allows you to receive and transmit calls.
Tx Transmit
USB Upper Sideband

15
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Exploring the 4050 HF Transceiver
Transceiver Front Panel
Power button which combines switching the Transceiver on and off 
with adjusting the volume. 
This will be represented as   throughout the manual.
USB / WiFi Socket
Touchscreen
Keypad
Mini USB Socket
Microphone socket

16
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Keypad
There are seven keys on the keypad. Some keys have multiple functions 
assigned to them depending on when or how long the key is pressed. 
Key Function
Channel Up /  
Scroll up
Channel Down /  
Scroll down
Scroll left and right 
Key Function
Enter /  
Set a menu item
Make a call 
Clear /  
Back one step
Press the   and   buttons together to initiate an emergency call.  
See page 26 for further information.
Transceiver Front Panel Rear View
15-way Transceiver plug for remote front panel interface cable
Speaker jack
Stand-offs (supplied) to enable the front panel to be detached and an 
interface cable to be secured in position
The front panel may be detached from the Transceiver (for remote operation), 
by pulling the front panel away from the Transceiver. A six metre cable may be 
used to connect the front panel with the Transceiver’s 15-way connector.
The speaker jack is used to connect an external loudspeaker (P/N BCA40015).

17
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Transceiver Rear Panel
GND Use this stud to attach an earth connection.  
For example, vehicle chassis.
DC INPUT  
12 - 24 V d.c.  Power input for use with the 4022 power supply 
GPS Input for GPS receiver (P/N BCA40009) for vehicle 
tracking / location applications.
ANT Main antenna socket 
ATU Interface for Barrett automatic tuning mobile antenna 
and marine automatic antenna tuners.
AUXILIARY 25-way auxiliary interface
SPEAKER Output for loudspeaker (P/N BCA40015)
AUX CONTROL 
HEAD / BoB
This can be used to attach a secondary control head 
(via a six metre cable) in addition to the front panel. 
This can also be used to attach a Break out Box. 
(see page 123)

18
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Switching the Transceiver On / Off 
Switching the Transceiver On
Momentarily press   to turn the 
Transceiver on.
A progress bar displays beneath the 
logo.
The Splash screen displays whilst the 
keypad illuminates white, green, red, 
and white.
The Home screen displays.

19
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Switching the Transceiver Off
Press and hold   for three seconds 
to turn the Transceiver off.
The Transceiver returns to the Home 
VFUHHQDQGEULHÁ\GLVSOD\VDUHGFRQ-
ÀUPDWLRQPHVVDJHWKDWWKHGHYLFHLV
“Shutting Down”.
A progress bar displays the status of 
the shutting down process.
Volume
Rotate   clockwise to increase 
the volume and anti-clockwise to 
decrease.
The rectangular icon beneath the 
loudspeaker icon increases and de-
creases in length correlating with the 
volume. 

20
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Power Button Menus
With the Transceiver switched on, 
momentarily press   to display the 
Power Button menu.
Three options are available: Capture, 
Reboot / Shutdown, and Resync. 
These are described below.
Capture
Tap   Capture from the Power Button 
menu to perform a screen capture. 
$FRQÀUPDWLRQPHVVDJHGLVSOD\VDQG
the screen capture is stored in the 
Transceiver. 
To transfer the screen capture from 
the Transceiver to a PC, connect a 
cable with a mini USB plug into the 
Transceiver’s front USB port and plug 
the other end with a standard USB 
plug into a PC’s USB port.
From the Transceiver’s home screen, 
select Menu > Export to display the 
Export screen. Select Export screen-
shots to save the screen captures 
from Transceiver to PC.

21
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Reboot / Shutdown
Tap   Reboot / Shutdown from the 
Power Button menu to switch the 
Transceiver off.
Tap and hold momentarily Reboot / 
Shutdown to reboot the Transceiver.
The Transceiver returns to the Home 
VFUHHQDQGEULHÁ\GLVSOD\VDUHGFRQ-
ÀUPDWLRQPHVVDJHWKDWWKHGHYLFHLV
“shutting down”.
Resync
Tap   5HV\QF from the Power Button menu to resynchronise the Transceiver data 
with the control head.
Whilst resynchronising, the keypad illuminates green and the Busy status indi-
cator animates.
Locking and Unlocking the Screen
Press and hold  IRUÀYHVHFRQGV
to lock the screen. 
The following screen displays and the 
locked icon   is visible on the title 
bar.
Similarly, with the screen locked, 
press and hold  IRUÀYHVHFRQGV
to unlock the screen.

22
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Display
14
15
Tune Status  (page 134)
Digital Voice (page 138)
Status Indicators:
   Access Point 
   WiFi
   Low Voltage 
   Screen Lock 
   Busy 
   GPS 
   USB 
   Call Received 
 BoB Active
(page 120)
(page 118)
(page 21)
(page 148)
(Import page 127, Export page 114)
(page 31)
(page 123)

23
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Date and Time (page 53)
Menus (page 49)
Antenna (page 64)
ALE (Channel) Status (page 60)
Selective Call Mode (page 64)
Transmit Power (page 63)
Mode (page 63)
Receive Strength Indicator
Channel Label (page 59)
Frequency (page 62)
14 Channel Number (page 62)
15 ALE (System) Status (page 102)
See page 115 for further information on Display Settings.

24
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Using the Microphone
Up Button
Down Button
Press To Talk  
(PTT) Button
When Using the Microphone:
1.  Press and hold the PTT (transmit) button only while talking
2.  Position the microphone close to your mouth
3. Speak clearly
4.  8VHWKHZRUGµRYHUµWRLQGLFDWHWKDW\RXKDYHÀQLVKHGVSHDNLQJDQGWKHQ
release the PTT (transmit) button.
Notes:
• 
The Barrett 4050 has a transmit time-out facility. This facility (when pro-
grammed) allows the transmitter to be keyed in transmit mode with the PTT 
(transmit) switch for a set time period, after which the Transceiver switches 
to receive until the PTT (transmit button) is released and re-keyed. This facility 
prevents the transmitter transmitting for long periods of time if, for example, 
the microphone becomes jammed between seats in a vehicle causing the PTT 
(transmit) switch to be held down. Enabling, disabling and changing the time 
of the transmit timeout facility can be set either when programming the Trans-
ceiver or in the General Section of the Settings menu. See page 93.
• 
7KHPLFURSKRQHXSGRZQEXWWRQVFDQEHFRQÀJXUHGIRUFKDQQHOFKDQJHRU
volume control functions either when programming the Transceiver or in the 
General Section of the Settings menu. See page 53. 

25
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Programming Functions
The Transceiver may be programmed in two ways:
•  By direct key entry through the front panel. See page 49.
Note: This facility may not be available if the network administrator has locked 
it previously.
•  %\LQVHUWLQJDWKXPEGULYHFRQWDLQLQJWKHDSSURSULDWHÀOHVLQWRWKH7UDQV-
ceiver’s USB socket. See page 127.
Program a New Channel from the Front Panel
Note: To program a channel from the front panel it is necessary to have this func-
tion enabled via the Barrett 4050 HF SDR Programming Software (P/N BCA40001).  
Each channel requires the following parameters to be set:
• Channel Number
• Channel Label
• Rx Frequency
• Tx Frequency
•  Channel Mode (USB, LSB, FSK, CW or AM)
•  Channel Power (10, 30, 125 or 150 watt) 
(Note: 150 W not available in Australia)
•  Selcall Format (RFDS Alarm, OEM, CCIR, International or None)
• ALE Channel
•  Antenna Select (Main or Auxiliary)
For information regarding adding a new channel, see page 61.

26
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Emergency Calls
All Selcall emergency calls are 
transmitted by pressing the   
and   buttons together for more 
than two seconds. The emergency 
call sequence commences when the 
buttons are released. 
The action of the emergency call depends on how the Transceiver has been pro-
grammed. For example:
•  Selective Call alarm that only transmits on the currently selected channel 
Transmits the emergency Selcall sequence once on each press of  
the   and   buttons. 
•  Selective Call alarm that transmits and automatically changes to a selec-
tion of channels 
Transmits the emergency Selcall sequence twice on each channel pro-
grammed as an emergency channel.
•  Royal Flying Doctor Service (RFDS) alarm 
Two-tone alarm 880 Hz + 1320 Hz continuous (Australian use only) – 
alerts the Royal Flying Doctor Service on RFDS channels. 
The RFDS alarm will continue transmitting for ten seconds even if you 
have released the   and   buttons. 
To cancel the RFDS alarm, press the PTT button or the   button. 
Note: A momentary press of the   and   buttons initiates an RFDS 
alarm test mode which emits the audio tones but does not transmit them. 
Another momentary press of the   and   buttons or PTT cancels the 
RFDS alarm test mode. 
,ID*36UHFHLYHULVÀWWHGDQGHQDEOHGWKH*36SRVLWLRQLVDOVRVHQWZLWKWKH
call. 
Note: After the emergency call has been activated, there is no indication that an 
alarm is being sent for security purposes. 

27
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Receiving an Emergency Call
On receipt of an emergency Selcall, a 
distinctive audio alarm is emitted and 
the following message displayed.
If the Transceiver sending the emer-
JHQF\6HOFDOOLVÀWWHGZLWKD*36
receiver, the position will also be 
displayed.

28
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Barrett Selective Calling System
There are several different types of Selective Calling Systems available in addi-
tion to simple point-to-point RF communications.
The calling systems available for the Transceiver are listed below:
•  International - A four and six digit Selective Call system, fully interoperable 
with the UN format published in September 2004 and fully backwards 
compatible with all previous Barrett four and six digit Selcall protocols. 
•  OEM - A four and six digit Selective Call system compatible with other 
major HF manufacturers including those using encryption. Includes Selcall, 
Telcall, Beacon Call, Emergency call, Pagecall and GPS call.
•  &&,5$IRXUGLJLW6HOHFWLYH&DOOV\VWHPDVVSHFLÀHGE\&&,5
•  ALE FED-STD-188 / MIL-STD-188-141B (option) - MIL-STD Automatic Link 
Establishment system, refer to the Automatic Link Establishment (ALE) 
section on page 100.
Summary of Calling Systems
Call Type International OEM  CCIR
Emergency Call Yes Yes No
Beacon Call Yes Yes No*
Selcall Yes Yes Yes
Telcall Yes Yes Yes
Arinc Call Yes Yes Yes
Page Call (SMS) Yes Yes No
GPS Call (Data & Request) Yes Yes No
Secure Call Yes No No
Status Request Call Yes Yes No
Transceiver Lock Call Yes No No
* With Transceivers set to CCIR calling format, Beacon Call can be sent but will 
be decoded as a Selcall by other Transceivers.

29
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Selective Call - Selcall
Selcall (selective calling) is a digital signalling system based on the standard 
CCIR-493 for use on HF networks. It is a type of squelch protocol used in 
radio communications systems, in which transmissions include a brief burst of 
sequential audio tones. Receivers that are set to respond to the transmitted 
tone sequence will open their squelch, while others will remain muted.
Selcall Self IDs
Each station in an HF network can be assigned up to 14 different Self IDs of 
ZKLFKWKHUHFDQEHDPL[WXUHRIIRXURUVL[GLJLW,'VLGHQWLÀFDWLRQ$VWDWLRQ
can be called using any of these Self IDs.
Selcall Decode
The Transceiver has the ability to decode both OEM and International Selcalls 
on any channel programmed as a Selcall channel. However, the call must be 
addressed to the relevant ID (OEM or International). 
Calls for each format type will only be decoded if there is at least one Self ID of 
that format programmed into the Transceiver Self ID group.
Selcall Transmit
6HOFDOOIRUPDWVLQWUDQVPLWDUHFKDQQHOVSHFLÀF)RUH[DPSOHRQO\FDOOW\SHV
programmed for the channel are permitted. This means International and CCIR 
format calls can only be sent on channels that are programmed as International 
or CCIR Selcall channels. OEM calls can only be sent on channels that are pro-
grammed as OEM Selcall channels.
Selective Call - Telcall
Telcall uses this digital Selective Call system to send a telephone number from a 
station on an HF network to a base station equipped with a telephone inter-
connect unit to initiate phone calls onto the PSTN.
1RWH)RU6HOFDOODQG7HOFDOOIXQFWLRQVWRRSHUDWHWKH7UDQVFHLYHUPXVWEHÀWWHGZLWK
the Selcall or Telcall option and the channels enabled for Selcall operation.
If Automatic Link establishment (ALE) is in use, refer to the Automatic Link 
Establishment (ALE) section on page 100.

30
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Special Notes for the OEM Selective Call Protocol
Four and six digit OEM calls will only be decoded by other Barrett Transceivers 
ÀWWHGZLWKWKH2(06HOFDOOSURWRFRORURWKHUPDQXIDFWXUHU·V7UDQVFHLYHUVWKDW
use encryption.
Four and six digit GPS and Status data calls use the OEM privacy key to encrypt 
the data. If this eight digit key has not been programmed by the Barrett 4050 
HF SDR Programming Software (P/N BCA40001), a default privacy key of 
99999999 is automatically used for transmission.
Six digit Page calls also use the privacy key but unlike the other calls, the user 
has the option to manually enable or disable the privacy key. When disabled, 
the data is sent as plain text. 
Emergency GPS calls are automatically sent as plain text (four and six digit).
Station ID Ranges
The standard Selcall system accommodates four and six digit networks. 
Station IDs range from 000000 to 999999 inclusive (the destination ID must be 
either four or six digits long).

31
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Call Key
Use the   key to quickly invoke a call. 
Call Key
The   key is located in the lower left of the Transceiver’s keypad, above the 
mini USB socket.
Press   and if necessary tap   
to display the Manual Call screen. 
The Call screen comprises two areas. 
The narrow left hand area has four 
menu options. The broader right 
hand area displays the screens for 
each of the menu options.
The Call menu options are: Call Type, 
Contacts, Favourites, and Call History.
These options are described below. Menu Options for calls
Call Type
Press   and if necessary tap   
to display the Manual Call screen. 
From this screen choose the type of 
call to be made. The choices are: Bea-
con, Selcall, Telcall, Pagecall, GPS Req, 
GPS Pos, Hangup, Status and Secure.
These are described below.

32
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Beacon Call
A Beacon Call checks for the best channel to use between two stations. It 
allows the Operator to determine the signal quality between their station and 
the station they want to call on a particular channel, but without actually alert-
ing the station they are doing so.
When a Beacon Call is sent to another station, and if the channel being used is 
open, the remote station sends back a distinctive four-tone revertive signal. The 
Operator can judge the quality of the channel for communications purposes by 
the strength and clarity of this distinctive tone. Using Beacon Calls on several 
available channels will determine which channel is best to use either subse-
quent Selcalls or Telcalls.
Note: both stations must be programmed for Selcall or Telcall operation. 
Send a Beacon Call
/LVWHQIRUWUDIÀFRQ\RXUVHOHFWHG
FKDQQHO,IWUDIÀFLVKHDUGFKDQQHO
is occupied), select another channel 
and try again.
Press   and if necessary tap   
to display the Manual Call screen. 
Tap   %HDFRQ to display the Selcall ID 
screen.
Use the keyboard to type the Selcall ID, then tap Enter or press   and wait 
for the Beacon Call to be sent. Listen for the distinctive four tone revertive 
signal from the station you have called. If the revertive call is not heard, or it 
ZDVGLIÀFXOWWRKHDUWU\DQRWKHUFKDQQHODQGUHSHDWWKHSURFHVVXQWLOWKHEHVW
channel is found. 
Receive a Beacon Call
When a Transceiver receives a beacon request call, it responds by transmitting 
the Beacon Call revertive tones. No indications occur on the Transceiver. Beacon 
Calls are not saved in the Selcall history buffer.

33
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Selcall
Selcall is a digital signalling system based on standard CCIR-493 for use on 
HF networks. Each station in an HF network can be assigned Self IDs of which 
WKHUHFDQEHDPL[WXUHRIIRXURUVL[GLJLW,'VLGHQWLÀFDWLRQ7KHVWDWLRQFDQEH
called using any of these Self IDs.
Send a Selcall
Select the channel you want to send the Selcall on. (Use a Beacon Call initially 
to select the best channel - see page 32.)
/LVWHQIRUWUDIÀFRQWKDWFKDQQHO,IWUDIÀFLVQRWKHDUGSUHVV  and if neces-
sary tap   to display the Manual Call screen. 
Tap   6HOFDOO to display the Selcall ID 
screen.
Use the keyboard to type the Selcall 
ID, then tap Enter or press   and 
wait for the Selective Call to be sent.
Listen for revertive tone from the 
called station that indicates the call 
was successful.
,IWKHUHYHUWLYHWRQHLVQRWKHDUGRULWZDVGLIÀFXOWWRKHDUWU\DQRWKHUFKDQQHO
and repeat the process until a good channel is found.
If a revertive tone is heard but you receive no verbal response from the station, 
it may be because the Operator is unavailable at the time.
Receiving a Selcall Directed to Your Transceiver
Note: To receive a Selcall your Transceiver must be programmed for Selective Call 
(Selcall) and where multiple channels are in use the scan function should be acti-
vated.

34
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
When you receive a Selcall, your 
station sends a revertive tone (to alert 
the calling station that its call was 
received), an audible alarm sounds, 
the mute (squelch) (if selected) opens 
and the display shows who the call 
is from.
The audible alarm will sound for 60 seconds and then time out. To cancel the 
alarm before the time out period and to acknowledge the call, press the PTT 
button or tap Ok. When the audible alarm times out, the call received icon 
displays 
p
 and a periodic audio reminder is emitted.
For details of previously received Selcalls, press   and then tap   to dis-
play the Call History screen. Refer to the Call History section on page 47.
Receiving Allcalls, Group Calls and Sub-group Calls
Stations can send a Selective Call that will alert different groupings of mobiles 
as follows:
In four digit format
Allcall - A station sending X000 will be received by stations X000 - X999 (up to 
890 stations*)
Group call - A station sending XX00 will be received by stations XX00 - XX99 
(up to 89 stations*)
Sub-group call - A station sending XXX0 will be received by stations XXX0 - 
XXX9 (up to 9 stations*)
In six digit format
Allcall - A station sending XXX000 will be received by stations XXX000 - 
XXX999 (up to 890 stations*)
Group call - A station sending XXXX00 will be received by stations XXXX00 - 
XXXX99 (up to 89 stations*)
Sub-group call - A station sending XXXXX0 will be received by stations XXXXX0 
- XXXXX9 (up to 9 stations*)

35
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
* If using the group call system, stations cannot be programmed to have Self 
IDs with last digits 000,00,0 as if you tried to call them a group call would 
occur.
Receiving an Allcall, Group Call or Sub-group Call
When you receive an Allcall, Group Call or Sub-group call, an audible alarm 
sounds, the mute (squelch) (if selected) opens and the display shows the call 
type.
In all group calls the audible alarm will sound for 60 seconds and then time 
out. To cancel the alarm before the time out and to acknowledge the call, press 
the PTT button or tap Ok. When the audible alarm times out, the call received 
envelope icon displays.
For details of previously received Selcalls, press   and then tap   to dis-
play the Call History screen. Refer to the Call History section on page 47.
Telcall
Telcall uses this digital Selective Call system to send a telephone number on 
an HF network. Telcalls are primarily used to send to stations equipped with a 
telephone interconnect unit to initiate phone calls onto the PSTN.
1RWH)RU6HOFDOODQG7HOFDOOIXQFWLRQVWRRSHUDWHWKH7UDQVFHLYHUPXVWEHÀWWHGZLWK
the Selcall or Telcall option and the channels enabled for Selcall operation.
If Automatic Link Establishment (ALE) is in use, refer to the ALE section on  
page 100.
Send a Telcall
Select the channel you want to send the Telcall on. (Use a Beacon Call initially 
to select the best channel - see page 32.)
/LVWHQIRUWUDIÀFRQWKDWFKDQQHOLIWUDIÀFLVQRWKHDUGSUHVV  and if neces-
sary tap   to display the Manual Call screen.

36
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tap   7HOFDOO to display the Selcall ID 
screen.
Type the Selcall ID, then tap Enter 
or press   to display the Telcall 
screen.
From the Telcall screen, tap either 
Enter phone number or  
6HOHFWIURPFRQWDFW.
If Enter phone number was selected, 
the Phone Number screen displays.
Type the phone number using the 
keyboard and either press   or tap 
Enter to return to the home screen 
and send the Telcall.
The home screen momentarily dis-
plays the Telcall ID.

37
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
If Select from Contact was selected, 
the Contacts screen displays.
Tap the selected contact to return to 
the home screen and send the Telcall.
The home screen momentarily dis-
plays the Telcall ID.
Listen for revertive tone from the called station that indicates the call is suc-
cessful. If the revertive tone is not heard, try another channel and repeat the 
process.
If the destination station is connected to a Telephone Interconnect, when the 
call is successful, wait for telephone connection to be made and then proceed 
with the call. When the call is complete, or if the line is busy, send a Hang-Up 
call (see page 42).
Last Number Redial
Press   four times and the last telephone number sent displays.
Press   once more and the Telcall sequence will be re-sent.
Receive a Telcall
Note: To receive a Telcall your Transceiver must be programmed with a Self ID and 
where multiple channels are in use the scan function should be activated.
When you receive a Telcall, your station sends a revertive call (to alert the 
calling station that its call was received), an audible alarm sounds, the mute 
(squelch) (if selected) opens and the Telcall screen displays.

38
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
The Telcall screen shows the Selcall ID 
and telephone number of the caller. 
Tap   Stop to stop the audible alarm 
but maintain the Telcall screen. 
Tap   Close To close the Telcall screen.
The audible alarm will sound for 60 seconds and then time out. To cancel 
the alarm before the time out period and to acknowledge the call, press the 
PTT button or tap either Stop or Close (described above). When the audible 
alarm times out, the call received Envelope icon displays and a periodic audio 
reminder is emitted.
After the timeout, the call received icon displays.
For details of previously received Telcalls, press   and then tap   to dis-
play the Call History screen. Refer to the Call History section on page 47.
Pagecall
Pagecall (SMS) allows messages of up to 32 characters in International format, 
or 64 characters in OEM format to be sent or received to and from other Trans-
ceivers with Pagecall facilities.
Send a Pagecall
Use   and   to select the channel you want to send the Pagecall on 
DQGOLVWHQIRUWUDIÀFRQWKDWFKDQQHO
Note: Use a Beacon Call initially to select the best channel - see page 32.
,IWUDIÀFLVQRWKHDUGSUHVV  and if necessary tap   to display the Man-
ual Call screen.

39
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tap   3DJHFDOO to display the Selcall ID 
screen.
Use the keyboard to type the Selcall 
ID, then tap Enter or press   to 
display the PageCall Message screen.
Type your message using the alpha 
numeric keys. The numbers in the 
parenthesis indicate how many char-
acters you have used / total number 
of characters allowed.
Use up to 32 characters for an inter-
national Selcall and 64 for OEM.
Once the message is completed, tap 
 or press   to send.
Receive a Pagecall
When a Pagecall is received, an audible alarm sounds, any mute is disabled and 
the Pagecall screen displays
The Pagecall screen shows the Selcall 
ID and message. 
Tap   Stop to stop the audible alarm 
but maintain the Pagecall screen. 
Tap   Close To close the Pagecall 
screen.
The audible alarm will sound for 60 seconds and then time out. To cancel 
the alarm before the time out period, and to acknowledge the call press the 
PTT button or tap either Stop or Close (described above). When the audible 
alarm times out, the call received Envelope icon displays and a periodic audio 
reminder is emitted. 
When the audible alarm times out, the call received Envelope icon displays.

40
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
For details of previously received Selcalls, press   and then tap   to dis-
play the Call History screen. Refer to the Call History section on page 47.
GPS Req
Use this option to request another station’s GPS position. 
Use   and   to select the channel you want to send the GPS request 
FDOORQDQGOLVWHQIRUWUDIÀFRQWKDWFKDQQHO
Note: Use a Beacon Call initially to select the best channel - see page 32.
,IWUDIÀFLVQRWKHDUGSUHVV  and if necessary tap   to display the Man-
ual Call screen. 
Tap   GPS Req to display the Selcall ID 
screen.
Use the keyboard to type the Selcall 
ID, then tap Enter or press  .
The station you called returns its 
position.
The GPS Data screen displays the 
caller’s Selcall Alias (if available or 
alternatively the Selcall ID), and 
the caller’s Latitude and Longitude 
position.
To stop the sounding alarm but main-
tain the GPS Data display, tap Stop. 
To remove the GPS Data display tap 
Close.

41
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
However, the following error messages may be displayed:
•  GPS Unresponsive at Remote Station 
The GPS unit is not providing data to the remote Transceiver.
•  GPS Not Fitted at Remote Station 
7KHUHLVQR*36UHFHLYHUÀWWHGWRWKHUHPRWH7UDQVFHLYHU
• No Response 
There was no response from the remote station.
GPS Pos
Use this option to send your GPS position to another station.
1RWH7KHEXLOWLQ*36LQWHUIDFHRSWLRQPXVWEHÀWWHGDQGWKH*36UHFHLYHU
(
P/N BCA40009
) must be connected and receiving position information when using 
the GPS call option.
Use   and   to select the channel you want to send the GPS call on 
DQGOLVWHQIRUWUDIÀFRQWKDWFKDQQHO
Note: Use a Beacon Call initially to select the best channel - see page 32.
,IWUDIÀFLVQRWKHDUGSUHVV  and if necessary tap   to display the Man-
ual Call screen. 
Tap   GPS Pos to display the Selcall ID 
screen.
Use the keyboard to type the Selcall 
ID, then tap Enter or press   to 
transmit your GPS position. 
:DLWIRUWKHUHYHUWLYHWRQHIURPWKHUHPRWHVWDWLRQWRFRQÀUPWKHFDOOZDV
received. If revertive tone is not heard, repeat the process or change to another 
channel and repeat the process.
Note: If the display indicates that the GPS is unavailable, you cannot select the 
Selective Call function GPS data.

42
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Hangup 
When a call to a telephone interconnect base station has completed or a secure 
call link is complete, the Operator should ‘hang-up’ by sending a hang-up code 
to a telephone interconnect.
Note: If the hang up call is unsuccessful for any reason, the telephone interconnect 
will time out and hang-up automatically.
Press   and if necessary tap   to display the Manual Call screen. 
Tap   Hangup to display the Selcall ID 
screen.
Use the keyboard to type the Selcall 
ID, then tap Enter or press   
When the hang-up Selcall has com-
pleted transmitting, listen for hang-
XSUHYHUWLYHWRQHZKLFKFRQÀUPVWKDW
the hang-up was successful. 
When hanging up a telephone in-
terconnect call, the hang-up process 
may be repeated until a revertive 
tone is heard.
If the hang-up call is unsuccessful 
when ending a secure call, only the 
Transceiver that sent the hang-up call 
will exit secure mode. Repeating the 
hang-up call will not hang-up the 
remote end.

43
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Status
A Status call allows the operational status parameters of any Barrett Trans-
FHLYHUÀWWHGZLWK6HOFDOOWREHDFFHVVHG7KLVVWDWXVLVVHQWIURPWKHUHPRWH
Transceiver as a Selcall with the status information embedded within the Selcall 
structure. Information retrieved for remote diagnosis of Transceiver perfor-
mance includes:
• Selcall ID
•  Receive state battery voltage
•  Last transmit state battery voltage
•  Signal strength indication of received status request Selcall
•  Forward power output level
•  VSWR of the antenna
• Temperature
•  Selcall ID of the last radio called.
Requesting Another Station’s Status
Use   and   to select the channel you want to send the Status 
UHTXHVWFDOORQDQGOLVWHQIRUWUDIÀFRQWKDWFKDQQHO
Note: Use a Beacon Call initially to select the best channel - see page 32.
,IWUDIÀFLVQRWKHDUGSUHVV  and if necessary tap   to display the Man-
ual Call screen. 
Tap   Status to display the Selcall ID 
screen.
Use the keyboard to type the Selcall 
ID, then tap Enter or press   to 
transmit the status request and wait 
for the remote station to return its 
status data.
If a reply is not received, either repeat the process or change the channel and 
repeat the process.

44
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Secure
Secure Calls can only be made on channels programmed with International 
Format Selcall.
A Person to Person(s) Secure Call allows a secure voice connection to be made 
between two or more stations.
Note: The 4 digit secure call code must be the same for both stations. See Secure 
Call Code on page 113. 
Use   and   to select the channel you want to set the secure link to 
DQGOLVWHQIRUWUDIÀFRQWKDWFKDQQHO
Note: Use a Beacon Call initially to select the best channel - see page 32.
,IWUDIÀFLVQRWKHDUGSUHVV  and if necessary tap   to display the Man-
ual Call screen. 
Tap   6HFXUH to display the Selcall ID 
screen.
Use the keyboard to type the Selcall 
ID, then tap Enter or press   and 
wait for the Selective Call to be sent..
Note: To make a secure call to multiple 
stations, use a group call ID encom-
passing the required stations.
Listen for the secure call revertive tone from the called station which indicates 
the call was successful.
Note: The secure call revertive tone has a different sound to the revertive tones of 
the other call types.
,IUHYHUWLYHWRQHLVQRWKHDUGRULWZDVGLIÀFXOWWRKHDUWU\DQRWKHUFKDQQHODQG
repeat the process until a good channel is found.
To exit out of secure call mode, press   or send a “Hangup” call.
Note: Revertive tones will not be heard if using a group call code to call multiple 
stations.
6HFXUHPRGHLVFRQÀUPHGDQGLQGL-
cated beneath the title bar.

45
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Contacts
Selective call functions require Station IDs to be entered when making a call. 
Contacts allow frequently used Station IDs to be called easily.
This section describes how to use the Contact list, Favourites and Call History.
See page 67 for information on adding, editing and deleting contacts.
Press   and if necessary tap   
to display the Contacts screen. 
A list of contacts displays.
From the Contacts screen either: 
•  Select a contact from the Contact 
list. Scroll down the list to reveal 
more contacts by either swiping 
down on the touch screen or 
pressing   and then tapping 
the desired contact.
•  Search for Contacts by tapping 
WKH&RQWDFWVÀHOGWRUHYHDODNH\-
board. Tap the search criteria into 
WKH&RQWDFWVÀHOG 
Either tap   or press   or 
 to display the results of the 
search.

46
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Favourites
Press   and if necessary tap   
to display the Favourites screen. 
A list of favourite contacts displays.
From the Favourites screen either: 
•  Select a contact from the favour-
ites list. Scroll down the list to 
reveal more contacts by either 
swiping down on the touch 
screen or pressing   and 
then tapping the desired contact.
•  Search for Contacts by tapping 
WKH)DYRXULWHVÀHOGWRUHYHDOD
keyboard. Tap the search criteria 
LQWRWKH)DYRXULWHVÀHOG 
Either tap   or press   or 
 to display the results of the 
search.
To add a contact, see page 67.

47
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Call History
Whenever a Selcall, Telcall, Allcall, Group call, Sub-group call, Pagecall, Status-
call, GPS or Emergency call is received or transmitted, its details are held in a 
ÀUVWLQÀUVWRXWFDOOKLVWRU\EXIIHU
All received calls are stored in the Received tab.
All transmitted calls are stored in the Sent tab.
Each history buffer can store up to 100 entries.
Press   and if necessary tap   to display the Call History screen. 
The Call History screen has three tabs: All, Received, and Sent. These are 
described below.
All
This tab displays a list of all calls sent 
and received.
The list also details the Selcall ID and 
the times of the calls.
Received
This tab lists all types of Selcalls that 
have been received, viewed and 
stored for future reference.
From the Call History screen, tap 
Received to display a list of all calls 
received.
The   icon indicates a missed call. 

48
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Sent
This tab lists all types of Selcalls that 
have been transmitted.
From the Call History screen, tap 
Sent to display a list of all calls sent.
Select the call displayed in any of 
the three Call History tabs to display 
the channel number, frequency, date 
and time.
Tap   Call to proceed with a call to 
the selected number. 

49
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Menus
To navigate through the menus, either use swiping motions on the touch 
screen or use the keypad (described on page 16).
To return to a previous screen, you may also tap   located in the top right 
hand corner of each screen.
The Transceiver’s home screen dis-
plays the following menus:
• Settings
• Channels
• Hop
• Tune
• Mode
• NR
• Scan
• Mute
These menus are described in the 
following sections.
Settings
Select the Settings menu to display 
the Settings screen which enables 
access to the following sub menus: 
• General
• Security
• Labels
• Channels
• Contacts
• Scan
• Mute
• Selcall
• Audio
• RF
• IO
• ALE
• System Info
• Call History
• Export
• Display
• Network
•  BoB (if connected)
• Import/Update
To reveal subsequent pages of sub 
menus, either swipe down on the 
touch screen or press  .
These sub menus are described in the 
following sections.

50
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Menu Map
Settings
General
Labels
Channels Contacts
Scan
Mute
Selcall
Audio
Channels Hop Tune
Transceiver Name 
Mic Up/Down Keys 
Date and Time 
BITE Test 
Language
Select a Channel Invoke Tuning Sequence
Initiate Hopping
Audio in Tx 
Preamble Time 
Default Int Selcall ID (4 digits) 
Default Int Selcall ID (6 digits) 
OEM Privacy Key 
OEM Selcall ID (4 digits) 
OEM Selcall ID (6 digits) 
Selcall Networks 
GPS Broadcast Enable 
Transceiver Lock
Beep Level 
Alarm Audio Level 
Ring Tones 
5[&RQÀJXUDWLRQ 
7[&RQÀJXUDWLRQ 
Audio Bandwidth 
Line Audio 
Line Follows DV 
Line Out Level 
Line In Level 
Audio Record
Scan Rate 
Dwell Time 
Resume Time 
Table Selection 
Edit Scan Tables
Syllabic Sensitivity 
Signal Strength Level
Delete 
Edit 
Add
Delete 
Edit 
Add
Number 
Label 
Rx Frequency 
Tx Frequency 
Mode 
Tx Power 
Selcall Format 
ALE Channel 
Antenna Socket
Delete 
Edit 
Add
First Name 
Surname 
ID Type 
ALE 2G Alias 
ALE 3G Alias 
Email Address 
Phone Number 
Favourite
Hopping PIN 
Frequency Hop Rate 
OEM Secure Type 
OEM Secure Key 
Secure Digital Voice Key 
Secure Data Key 
Secure Calls Hop Rate 
Secure Call Code 
TC2 Programming Mode
Security

51
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Call History
IO
System Info
Network
BoB
RF
ALE
Display
Import /  Update
Mode NR Scan Mute
Invoke Scanning
Rx Preamp 
Tx Over Beep 
Transmit Timeout 
Noise Blanker 
Tx Power Level 
AGC Hang 
Broadcast Filter 
Preselector
WiFi Operation Mode 
WiFi Access Point
BoB Name 
Network Settings 
Network Status
,PSRUW&RQÀJXUDWLRQ 
Program Firmware
Level of Display Backlight 
Backlight Timeout 
Display Timeout Behaviour 
Transmit Meter Mode 
Receive Meter Mode 
Temperature Units
System Status 
Version Information 
Transceiver Options 
4050 Serial Number
ALE State 2G 
Preset Map 
Response Control 
Sounding Control 
Sounding Address 
LQA Exchange 
LQA Averaging 
LQA Decay Rate 
Threshold Test 
SINAD Threshold 
BER Threshold
RS 232 Out 
RS232 Baud Rate 
Ext Alarm Type 
Antenna 1 Type 
Antenna 2 Type
USB 
LSB 
FSK 
CW 
AM
Off 
Low 
Medium 
High
Audio Mute 
SSL Mute 
Selcall Mute 
Mute Disabled
Export
ALE State 3G 
Voice Link Timeout 
Data Link Timeout 
LQA Averaging 
LSU Mode 
ALE 3G Channels 
Ale 3G Address

52
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
General
Select the General menu to display 
the *HQHUDO&RQÀJXUDWLRQVVFUHHQ
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. To reveal more items, ei-
ther swipe down on the touch screen 
or press  .
A brief description of each of the 
LWHPVZKLFKPD\EHFRQÀJXUHGLV
described beneath the items.
The current status of each of the 
items is displayed to the right.
Each item on the list is described 
below.
Transceiver Name
Tap   7UDQVFHLYHU1DPH from the 
*HQHUDO&RQÀJXUDWLRQVVFUHHQWR
display the SDR Name screen. The 
numbers in the parenthesis indicate 
how many characters you have used / 
total number of characters allowed.
Use the keyboard to type or edit the 
name of the SDR, then tap   
to save.

53
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Mic Up / Down Keys
The keys on the side of the micro-
phone can be assigned to:
•  Change channel (up / down)
•  Change volume (up / down)
• Disabled.
Up Button
Down Button
Tap   0LF8S'RZQ.H\V from the 
*HQHUDO&RQÀJXUDWLRQVVFUHHQWRGLV-
play the Mic Up/Down Keys screen.
Select either: Disabled, Channel, or 
Volume.
See page 24 for information on 
how to use the microphone.
Date and Time
Tap   'DWHDQG7LPH from the Gen-
HUDO&RQÀJXUDWLRQVVFUHHQWRGLVSOD\
the Date & Time screen.
Set the Transceiver’s date and time 
by swiping the touch screen vertically 
against the columns for hour, min-
ute, day, month, and year. 
:KHQWKHKLJKOLJKWHGÀJXUHVDUH
correct, tap   to save.

54
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Time Zone
Tap   Time Zone from the Date & 
Time screen to display the Time Zone 
screen.
Scroll up or down to reveal more 
time zones. Tap or press   to select  
a desired time zone. The dates and 
times will automatically populate the 
ÀHOGVLQWKH'DWHDQG7LPHVFUHHQ
BITE Test
Tap BITE Test to perform internal testing. These tests essentially include all the 
hardware which make up the Transceiver.
The built in test is also automatically performed when the Transceiver is 
switched on.
Language
Tap   Language from the General 
&RQÀJXUDWLRQVVFUHHQWRGLVSOD\WKH
Language screen.
Change the display language from 
the list shown.
To reveal more languages, swipe 
down on the touch screen or press 
. 

55
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Security
7KLVVHFWLRQLVXVHGWRFRQÀJXUHWKHVHFXULW\VHWWLQJVIRUWKH7UDQVFHLYHU
Tap   6HFXULW\ from the General 
&RQÀJXUDWLRQVVFUHHQWRGLVSOD\WKH
Security Settings screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJ-
ured is displayed. 
A brief description of each of the 
items is described beneath the items.
The current status of each of the 
items is displayed to the right.
Each item is described below.
Hopping PIN
Tap   +RSSLQJ3,1 from the Security 
Settings screen to display the Hop-
ping PIN screen.
Type the Hopping PIN (maximum 8 
characters) and then tap Enter.

56
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Frequency Hop Rate
Frequency hopping can be used to limit performance degradation due to 
interference and to reduce the likelihood of interception. Frequency Hopping 
Spread Spectrum (FHSS) is a method of transmitting radio signals by rapidly 
switching a carrier among many frequency channels.
The Frequency Hop Rate is the rate at 
which the frequency hopping moves 
between transmission frequencies. 
Tap   )UHTXHQF\+RS5DWH from the 
Security Settings screen to display 
the Frequency Hop Rate screen.
Select either Standard or High.
OEM Secure Type
This displays whether a scrambler 
has been installed and the name of 
the scrambler. See below for further 
information.
OEM Secure Key
The Audio Scrambler option is only available to Transceivers using the internally 
ÀWWHGDXGLRVFUDPEOHUDFFHVVRU\PRGXOHWKDWSURYLGHVEDFNZDUGVFRPSDWLELOLW\
to the 900 series audio inversion scrambler (P/N BCA20031), Telsy, or the Tran-
scrypt scrambler. This option uses the OEM Scrambler encryption.
Tap   2(06HFXUH.H\ from the 
Security Settings screen to display the 
OEM Secure Key screen.
Select between 1 and 16 for the Tran-
scrypt scrambler or 1 and 32 for the 
audio inversion scrambler. 
All stations using an Audio Scrambler 
require the same scrambler code to 
be entered in order to communicate.

57
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
1RWH,IXVLQJWKHLQWHUQDOO\ÀWWHGUROOLQJFRGHDXGLRVFUDPEOHUDFFHVVRU\PRGXOH
the code must be set on the unit before installation using an external programmer.
To enable the scrambler, access the Swipe menu by swiping the home screen 
from left to right, then tap  . 
For more information, refer to the Swipe Menu on page 138.
Secure Digital Voice Key
The Secure Digital Voice Key is used 
for secure digital voice. Keys need to 
EHHQWHUHGLQWRWKH7&PRGXOHÀUVW
using a third party TC2 tool.
Tap   6HFXUH'LJLWDO9RLFH.H\ from 
the Security Settings screen to display 
the Secure Digital Voice Key screen.
Select between 1 and 15.
The Transmit Transceiver must have 
the same number key as the Receive 
Transceiver in order to communicate.
Secure Data Key
The Secure Data Key is used to secure 
data. Keys need to be entered into 
WKH7&PRGXOHÀUVWXVLQJDWKLUG
party TC2 tool.
Tap   6HFXUH'DWD.H\ from the Se-
curity Settings screen to display the 
Secure Data Key screen.
Select either Disabled or a value 
between 1 and 15.
The Transmit Transceiver must have 
the same number key as the Receive 
Transceiver in order to communicate.

58
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Secure Calls Hop Rate
The Secure Calls Hop Rate is the rate 
at which the secure call hopping 
moves between transmission fre-
quencies. Unlike frequency hopping, 
it doesn’t utilise GPS.
Tap   6HFXUH&DOOV+RS5DWH from 
the Security Settings screen to display 
the Secure Calls Hop Rate screen.
Select either Standard or High.
Secure Call Code
Tap   6HFXUH&DOO&RGH from the 
Security Settings screen to display the 
Secure Call Code screen.
Type the four digit PIN and tap 
Enter.
TC2 Programming Mode
,IWKH7UDQVFHLYHULVÀWWHGZLWKD7&
module, this option enables TC2 to 
be programmed. 
Tap   TC2 Programming Mode from 
the Security Settings screen to display 
the TC2 Programming Mode screen.
Select either Disabled or Enabled. 
When enabled, the functionality 
of the Transceiver is disabled. After 
programming the TC2, reboot the 
Transceiver.

59
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Labels
This section describes how to add, edit, or erase channel labels. Channel labels 
are used to indicate what a particular channel is used for. For example, UNHCR 
Geneva.
Note: Channel labels may be applied to channels when adding a channel.  
See page 62.
Tap   Labels from the Settings screen 
to display the Channel Labels screen.
A list of currently used channel labels 
display.
Add a Channel Label
To add a channel label, tap   to 
display the Add Label screen. 
Use the keyboard to type the name of 
the label, then tap 
yp
 to save.

60
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Edit a Channel Label
To edit a channel label from the 
Channel Labels’ screen, select the 
label by using the   and   
keys and either tap the label or press 
 from the keypad.
The Edit Label screen displays. The 
numbers in the parenthesis indicate 
how many characters you have used / 
total number of characters allowed.
Use the keyboard to edit the name of 
the label, then tap   to save. 
Delete a Channel Label
To delete a channel label from the 
Channel Labels’ screen, select the 
channel label you wish to delete, 
then tap and hold for three seconds. 
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
Tap   Yes.
Channels
Tap   Channels from the Settings 
screen to display the Channels screen.
A list of currently used channel dis-
plays. Each channel shows its channel 
number, frequency, and channel 
label.

61
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Search For a Channel
To search for a channel, tap   to 
display the Channel Number screen.
Tap the appropriate digits for the 
search, then tap Enter.
Add a Channel
To add a channel, tap   to display 
the Add Channel screen. 
A list of attributes that may be con-
ÀJXUHGLVGLVSOD\HG7RUHYHDOPRUH
attributes, either swipe down on the 
touch screen or press  .
A brief description of each of the 
DWWULEXWHVZKLFKPD\EHFRQÀJXUHGLV
described beneath the attribute.
The current status of each of the 
attributes is displayed to the right.
Each attribute on the list is described 
below.

62
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Number
Tap   1XPEHU from the Add Channel 
screen to display the Channel Num-
ber screen.
The default shows the next available 
channel number. 
Tap   %DFNWRFOHDUWKH(QWU\ÀHOG7DS
the appropriate digits to represent 
the desired channel number, then tap 
Enter.
Label
Tap   Label from the Add Channel 
screen to display the Label screen.
Select a label from the Label screen.
To reveal more items, either swipe 
down on the touch screen or press 
. 
See page 59 for information on 
Channel labels.
Rx Frequency
Tap   5[)UHTXHQF\ from the Add 
Channel screen to display the Chan-
nel Receive Frequency screen.
Tap   %DFNWRFOHDUWKH(QWU\ÀHOG
Tap the digits to represent the desired 
values (in kHz).

63
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tx Frequency
Tap   7[)UHTXHQF\ from the Add 
Channel screen to display the Chan-
nel Transmit Frequency screen.
Tap   %DFNWRFOHDUWKH(QWU\ÀHOG
Tap the digits to represent the desired 
values (in kHz). 
Mode
Tap   Mode from the Add Channel 
screen to display the Mode screen.
To reveal more items, either swipe 
down on the touch screen or press 
. 
The choices are: Upper Sideband, 
Lower Sideband, Frequency Shift Key-
ing, Continuous Wave (Morse code), 
and Amplitude Modulation.
Tx Power
Tap   Tx Power from the Add Channel 
screen to display the Tx Power screen.
Select either: 10 W, 30 W, or 125 W.

64
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Selcall Format
Tap   6HOFDOO)RUPDW from the Add 
Channel screen to display the Selcall 
Format screen.
To reveal more items, either swipe 
down on the touch screen or press 
. 
Select either: None, INT, CCIR, OEM, 
RFDS, NW1, NW2, NW3, NW4, or 
NW5.
Refer to page 28 for further infor-
mation on Selcall systems.
ALE Channel
Displays the ALE status of a channel: 
either: True, False, or Disabled.
Antenna Socket
Tap   $QWHQQD6RFNHW from the Add 
Channel screen to display the Anten-
na Socket screen.
Select either: Antenna 1 or  
Antenna 2.
Note: As there is only one antenna 
socket on the Transceiver, this option 
only applies if you are using a Break out 
box.

65
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Save Channel
$IWHUFRQÀJXULQJWKHDERYHDWWUL-
butes, tap   to add the channel.
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
Tap   Yes.
Edit a Channel
To edit a channel, select the desired 
channel by using the   and 
 keys from the Channel screen 
(page 60) and either tap the chan-
nel or press   from the keypad.
The Channel Information screen 
GLVSOD\V(GLWWKHÀHOGVDVGHVFULEHG
above (Add a Channel).
After the channel’s attributes have 
EHHQHGLWHGDFRQÀUPDWLRQPHVVDJH
displays.
Tap   Yes.

66
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Delete a Channel
To delete a channel, tap and hold for 
three seconds the channel you wish 
WRGHOHWH$FRQÀUPDWLRQPHVVDJH
displays. 
Tap   Yes.
Contacts
Tap   &RQWDFWV from the Settings 
screen to display the Contacts screen.
A list of contacts display. Each 
contact shows their Selcall ID and 
telephone number.
Sort Contacts
There are two sort icons.
•  7RVRUWE\ÀUVWQDPHWDS . 
•  To sort by last name, tap  .
Only one sort icon will display at any time. 
,IWKHOLVWKDVDOUHDG\EHHQVRUWHGE\ÀUVWQDPHWKH6RUW%\/DVW1DPHLFRQZLOO
display. 
If the list has already been sorted by last name, the Sort By First Name icon will 
display.

67
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Search Contacts
To search contacts, tap the Contacts 
ÀHOGWRUHYHDODNH\ERDUG7DSWKH
VHDUFKFULWHULDLQWRWKH&RQWDFWVÀHOG 
Either tap   or press   or   
to display the results of the search.
Add a Contact
To add a contact, tap   The Add 
Contact screen displays. 
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. To reveal more items, ei-
ther swipe down on the touch screen 
or press  .
The current status of each of the 
items is displayed to the right.
Each item on the list is described 
below.

68
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
First Name
Tap   )LUVW1DPH from the Add Con-
tact screen to display the First Name 
screen. 
Tap the appropriate characters from 
the keyboard into the First Name 
ÀHOG7KHQXPEHUVLQWKHSDUHQWKHVLV
indicate how many characters you 
have used / total number of charac-
ters allowed.
Tap    to save and return to 
the Add Contact screen.
Surname
Tap   Surname from the Add Contact 
screen to display the Surname screen. 
Tap the appropriate characters from 
WKHNH\ERDUGLQWRWKH6XUQDPHÀHOG
The numbers in the parenthesis indi-
cate how many characters you have 
used / total number of characters 
allowed. Tap   to save and 
return to the Add Contact screen.
ID Type
Tap   ,'7\SH from the Add Contact 
screen to display the ID Type screen.
Select either: Four digit, six digit, or 
ARINC. These options are described 
below. 
Select Unassigned if there is no Id 
type to be associated with the con-
tact.

69
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Four Digit
Tap   )RXU'LJLW from the Id Type 
screen to display the Selcall ID screen.
Tap the appropriate characters from 
WKHNH\ERDUGLQWRWKH6HOFDOO,'ÀHOG
Tap   Enter to save and return to the 
Add Contact screen.
Six Digit
Tap   6L['LJLW from the Id Type screen 
to display the Selcall ID screen.
Tap the appropriate characters from 
WKHNH\ERDUGLQWRWKH6HOFDOO,'ÀHOG
Tap   Enter to save and return to the 
Add Contact screen.
ARINC
Tap   $5,1& from the Id Type screen to 
display the ARINC Call screen.
Tap the appropriate characters from 
the keyboard into the ARINC Call 
ÀHOG7KHQXPEHUVLQWKHSDUHQWKHVLV
indicate how many characters you 
have used / total number of charac-
ters allowed.
Tap    to save and return to 
the Add Contact screen.
ARINC Call (0/4)

70
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
ALE 2G Alias
Tap   ALE 2G Alias from the Add 
Contact screen to display the ALE 
Addresses screen. Tap the appropriate 
characters from the keyboard into 
WKH$/($GGUHVV,'ÀHOG
Tap    to save and return to 
the Add Contact screen.
ALE 3G Alias
Tap   ALE 3G Alias from the Add 
Contact screen to display the ALE 
Addresses screen. Tap the appropriate 
characters from the keyboard into 
WKH$/($GGUHVV,'ÀHOG
Tap    to save and return to 
the Add Contact screen.
Email Address
Tap   Email Address from the Add 
Contact screen to display the Email 
Address screen. 
Tap the appropriate characters from 
the keyboard into the Email Address 
ÀHOG7KHQXPEHUVLQWKHSDUHQWKHVLV
indicate how many characters you 
have used / total number of charac-
ters allowed.
Tap    to save and return to 
the Add Contact screen.

71
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Phone Number
Tap   3KRQH1XPEHU from the Add 
Contact screen to display the Phone 
Number screen. Tap the appropriate 
characters from the keyboard into 
WKH3KRQH1XPEHUÀHOG
Tap    to save and return to 
the Add Contact screen.
Favourite
Tap   )DYRXULWH from the Add Con-
tact screen to display the Favourite 
screen. 
Select Yes to add to the favourite 
contacts.
Edit Contact
To edit contact details, select the de-
sired contact by using the   and 
 keys and either tap the con-
tact or press   from the keypad
The Edit Contact screen displays. Edit 
the details as described above (for 
Add Contact).

72
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Delete Contact
Select the contact to be deleted, then 
tap and hold for three seconds. 
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
Tap   Yes.
Scan
Tap   6FDQ from the Settings screen 
to display the Scan screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJ-
ured is displayed. To reveal more 
items, either swipe down on the 
touch screen or press  .
Each item is described below.
Scan Rate
Select the scan rate applicable to 
non-Selcall scan channels.
Tap   6FDQ5DWH from the Scan screen 
to display the Scan Rate screen. 
To reveal more items, either swipe 
down on the touch screen or press 
.
Select either: 300, 500, 700, 1000, 
1500, 2000, or 5000 ms.

73
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Dwell Time
Select the length of time the Transceiver dwells (waits) on a channel after scan 
has been stopped by signal strength level (if signal strength level mute is set) or 
voice activity (if audio mute is set).
Tap   'ZHOO7LPH from the Scan 
screen to display the Dwell Time 
screen. 
To reveal more items, either swipe 
down on the touch screen or press 
.
Select between one and ten seconds.
Resume Time
Set the time period after which the Transceiver will automatically resume scan-
ning from the last operation. For example, after a key press or PTT.
Tap   Resume Time from the Scan 
screen to display the Resume Time 
screen. 
To reveal more items, either swipe 
down on the touch screen or press 
.
Select either: Off, 1, 2, 3, 5, 10, 15, 
20, or 30 minutes.
Table Selection
Select the Scan Table to be used when the Transceiver is put into scan mode, or 
if enabled, when scan resume occurs. 
There can be up to eight Scan Tables.
Note: When scrolling through the Scan Tables to make a selection, only Scan Tables 
with channels entered will display. If none of the Scan tables have any channel 
entries, the message “All Scan Tables Empty“ displays.

74
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tap   7DEOH6HOHFWLRQ from the Scan 
screen to display the Table Selection 
screen. 
To reveal more items, either swipe 
down on the touch screen or press 
.
The example shows four tables to 
select from. Each table revealing the 
name of the table and the respective 
number of channels.
Edit Scan Tables
Note: All channels are displayed in numerical order within the scan table with 
respect to the entry number. There are a maximum of 30 entries in each table.
Tap   (GLW6FDQ7DEOHV from the Scan 
screen to display the Selcall Scan 
Tables screen. 
The example shows two scan tables 
which may be edited. Each table 
reveals the name of the table, the 
antenna, the number of channels in 
the table and the channel numbers.
Add a Scan Table
To add a Scan Table, tap  . The 
Scan Table screen displays. 
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. 
A brief description of each of the 
LWHPVZKLFKPD\EHFRQÀJXUHGLV
described beneath the items.
The current status of each of the 
items is displayed to the right.
Each item on the list is described 
below.

75
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Scan Table Name
Tap   6FDQ7DEOH1DPH from the Scan 
Table screen to display the Scan Table 
Name screen. 
The default name is alias. Overtype 
the default name by tapping the 
appropriate characters from the key-
ERDUGLQWRWKH6FDQ7DEOH1DPHÀHOG
Tap    to save and return to 
the Scan Table screen.
Antenna Socket
Tap   $QWHQQD6RFNHW from the Scan 
Table screen to display the Antenna 
Socket screen. 
Select either Antenna 1 or Antenna 2.
Note: As there is only one antenna 
socket on the Transceiver, this option 
only applies if you are using a Break out 
box.
Scan Table Channel List
Tap   6FDQ7DEOH&KDQQHO List from 
the Scan Table screen to display the 
Scan Channel Selection screen. 
Tap the checkboxes adjacent to the 
channels you wish to choose and 
then tap 
y
.

76
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Save a Scan Table
$IWHUFRQÀJXULQJWKHDERYHLWHPV
tap   to add the table.
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
Tap   Yes.
Edit a Scan Table
To edit a table, select the desired 
table and either tap the table or press  
 from the keypad.
The Scan Table screen displays. Edit 
the details as described above (for 
Add a Scan Table).
Delete a Scan Table
Select the table to be deleted, then 
tap and hold for three seconds. 
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
Tap   Yes.

77
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Mute
Tap   Mute from the Settings screen to 
display the Mute screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. 
Each item is described below.
Syllabic Sensitivity
Set the sensitivity or ‘hardness’ of the 
syllabic mute (squelch). 
Tap   6\OODELF6HQVLWLYLW\ from the 
Mute screen to display the Syllabic 
Sensitivity screen. 
Select either: Low, Medium, or High 
sensitivity to voice activity on a 
channel.
Signal Strength Level
Select the level at which the Signal Strength Level (SSL) mute (squelch) opens. 
Tap   6LJQDO6WUHQJWK/HYHO from 
the Mute screen to display the Signal 
Strength Level screen. 
Select either: Low, Medium, or High.
When set to low, the mute will open 
on a relatively low level of received 
signal. When set to high, the mute 
will open on a relatively high level of 
received signal.
$IWHUFRQÀJXULQJWKHDERYHLWHPVWDS  or press   to save the settings 
and return to the Mute screen.

78
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Selcall
Tap   6HOFDOO from the Settings screen 
to display the Selcall screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. 
A brief description of each of the 
items is described beneath the items.
The current status of each of the 
items is displayed to the right.
To reveal more items, either swipe 
down on the touch screen or press 
.
Each item is described below.
Audio in Tx
Tap   Audio in Tx from the Selcall 
screen to display the Audio in Tx 
screen. 
Select either: Off, Low, or High.

79
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Preamable Time
Tap   Preamble Time from the Selcall 
screen to display the Preamble Time 
screen. 
Select between one and ten seconds.
To reveal more items, either swipe 
down on the touch screen or press 
.
Default Int Selcall ID (4 Digits)
Tap   'HIDXOW,QW6HOFDOO,' from the 
Selcall screen to display the Network 
Selcall ID screen. 
The default in this example is four 
digits 0000. Overtype the default by 
tapping the appropriate characters 
from the keyboard into the Network 
6HOFDOO,'ÀHOG
Tap   Enter to save and return to the 
Selcall screen.
Default Int Selcall ID (6 Digits)
Tap   'HIDXOW,QW6HOFDOO,' from the 
Selcall screen to display the Network 
Selcall ID screen. 
The default in this example is six dig-
its 000000. Overtype the default by 
tapping the appropriate characters 
from the keyboard into the Network 
6HOFDOO,'ÀHOG
Tap   Enter to save and return to the 
Selcall screen.

80
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
OEM Privacy Key
Tap   2(03ULYDF\.H\ from the 
Selcall screen to display the OEM 
Privacy Key screen.
Select either On or Off.
OEM Selcall ID (4 Digits)
Tap   2(06HOFDOO,' from the Selcall 
screen to display the Network Selcall 
ID screen. 
The default in this example is six 
digits 0000. Overtype the default by 
tapping the appropriate characters 
from the keyboard into the Network 
6HOFDOO,'ÀHOG
Tap   Enter to save and return to the 
Selcall screen. 
OEM Selcall ID (6 Digits)
Tap   2(06HOFDOO,' from the Selcall 
screen to display the Network Selcall 
ID screen. 
The default in this example is six dig-
its 000000. Overtype the default by 
tapping the appropriate characters 
from the keyboard into the Network 
6HOFDOO,'ÀHOG
Tap   Enter to save and return to the 
Selcall screen. 

81
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Selcall Networks
Tap   6HOFDOO1HWZRUNV from the 
Selcall screen to display the Selcall 
Network screen. 
The example shows two Selcall Net-
ZRUNVPD[LPXPÀYHZKLFKPD\EH
edited. Each Selcall Network reveal-
ing the name of the network alias, 
the Selcall format, the four and six 
digit Selcall ID.
Add a Selcall Network
To add a Selcall Network, tap  . 
The Selcall Network screen displays. 
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. 
A brief description of each of the 
items is described beneath the items.
The current status of each of the 
items is displayed to the right.
Each item on the list is described 
below.

82
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Selcall Network Alias
Tap   6HOFDOO1HWZRUN$OLDV from 
the Selcall Network screen to display 
the Selcall Network Alias screen. The 
numbers in the parenthesis indicate 
how many characters you have used / 
total number of characters allowed.
The default alias is NW1. Overtype 
the default alias by tapping the 
appropriate characters from the key-
board into the Selcall Network Alias 
ÀHOG7DS  to save and return 
to the Selcall Network screen.
Selcall Format
Tap   6HOFDOO)RUPDW from the Selcall 
Network screen to display the Selcall 
Format screen. 
Select either: None, INT, CCIR, OEM, 
or RFDS.
4 Digit Selcall ID
Tap   'LJLW6HOFDOO,' from the 
Selcall Network screen to display the 
Selcall ID screen. 
The default ID is 0000. Overtype the 
default ID by tapping the appropriate 
characters from the keyboard into 
WKH6HOFDOO,'ÀHOG
Tap   Enter to save and return to the 
Selcall Network screen.

83
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
6 Digit Selcall ID
Tap   'LJLW6HOFDOO,' from the 
Selcall Network screen to display the 
Selcall ID screen. 
The default ID is 000000. Overtype 
the default ID by tapping the appro-
priate characters from the keyboard 
LQWRWKH6HOFDOO,'ÀHOG
Tap   Enter to save and return to the 
Selcall Network screen.
Save a Selcall Network
$IWHUFRQÀJXULQJWKHDERYHLWHPV
tap   to add the Selcall Network.
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
Tap   Yes.
Edit a Selcall Network
To edit a Selcall Network, select 
the desired network and either tap 
the network or press   from the 
keypad.
The Selcall Network screen displays. 
Edit the details as described above 
(for Add a Selcall Network).

84
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Delete a Selcall Network
Select the Selcall Network to be 
deleted, then tap and hold for three 
seconds. 
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
Tap   Yes.
GPS Broadcast Enable
Tap   *36%URDGFDVW(QDEOH from 
the Selcall screen to display the GPS 
Broadcast Enable screen. 
Select either Disabled or Enabled.
This setting will either prevent or al-
low the periodic broadcasting of the 
Transceiver’s GPS position.
Timings for the GPS broadcast are set 
via the Barrett 4050 HF SDR Program-
ming software (P/N BCA40001).

85
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Transceiver Lock
To lock a remote Transceiver with a 
PIN, tap 7UDQVFHLYHU/RFN from the 
Selcall screen to display the Selcall ID 
screen. 
Use the keyboard to type the PIN, 
then tap Enter.
The Transceiver Lock PIN screen 
displays.
Use the keyboard to type the PIN 
again, then tap Enter.
The Transceiver Lock screen displays.
Tap   Yes to send a Transceiver lock on 
the respective channel with the PIN.
Tap   1R to abort.

86
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Audio
Tap   Audio from the Settings screen 
to display the Audio screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. 
A brief description of each of the 
items is described beneath the items.
The current status of each of the 
items is displayed to the right.
To reveal more items, either swipe 
down on the touch screen or press 
.
Each item is described below.

87
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Beep Level
This section is used to set the annunciation beep volume levels. These are the 
various tones associated with key presses. Annunciation beeps can be disabled 
for covert operations. For other operations these are set purely for Operator 
feedback.
Tap   %HHS/HYHO from the Audio 
screen to display the Beep Level 
screen. 
Select either: Off, Low, or High.
Alarm Audio Level
Tap   $ODUP$XGLR/HYHO from the 
Audio screen to display the Alarm Au-
dio Level screen. 
Select either: Mute, Low, Med, or 
High.

88
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Ring Tones
Tap   Ring Tones from the Audio 
screen to display the Ring Tones 
screen. 
Select from a series of different 
sounding tones: Ringtone 1 through 
to Ringtone 7.
These ring tones are used when 
receiving alarms, Selcall etc.
To reveal more items, either swipe 
down on the touch screen or press 
.
5[&RQÀJXUDWLRQ
This option sets where the unprocessed receiver audio in the Transceiver is 
sourced.
Normally, this is set to internal in which case the Transceiver’s receiver provides 
the unprocessed audio.
When used with a remote receiver in split site operations, the audio path can 
be set to external. In this case, unprocessed received audio from the remote 
site can be input into the auxiliary sockets 600 ohm balanced audio port.
Tap   5[&RQÀJXUDWLRQ from the Au-
GLRVFUHHQWRGLVSOD\WKH5[&RQÀJX-
ration screen. 
Select either: Internal Audio, or Exter-
nal Audio.

89
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
7[&RQÀJXUDWLRQ
This option sets where the transmitter audio in the Transceiver is sourced.
Normally, this is set to local in which case the Transceiver’s microphone pro-
vides the transmitter audio.
When used with a remote site operation, the path can be set to remote. In this 
case, the transmit audio is input into the auxiliary sockets 600 ohm balanced 
audio port.
Tap   7[&RQÀJXUDWLRQ from the Au-
GLRVFUHHQWRGLVSOD\WKH7[&RQÀJX-
ration screen. 
Select either: Local or Remote.
Audio Bandwidth
This section allows the audio bandwidth to be tailored to an Operator’s com-
fort requirements.
Tap   Audio Bandwidth from the 
Audio screen to display the Audio 
Bandwidth screen. 
Select either: 
300 Hz - 2700 Hz,  
300 Hz - 3000 Hz,  
300 Hz - 3200 Hz, or 
300 Hz - 3400 kHz.

90
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Line Audio
This option sets the muting condition of the 600 ohm balanced audio line out-
put on the rear auxiliary connector.
The line output can be set to Unmuted or Follows Mute. When set to Follows 
Mute, the line output is muted in the same manner as the speaker output and 
follows the mute condition currently in use. The line output is usually set to 
Unmuted when using data modems.
Tap   Line Audio from the Audio 
screen to display the Line Audio 
screen. 
Select either: Unmuted, or Follows 
Mute.
Line Follows Digital Voice
Line Follows Digital Voice may be 
used for example with a 2060 Tele-
phone Interconnect. The 2060 PTTs 
the radio through the line and trans-
mits the voice. From the drop-down 
menu select either Off or On.
Tap   /LQH)ROORZV'LJLWDO9RLFH 
from the Audio screen to display the 
Line Follows Digital Voice screen. 
Select either: Disabled or Enabled.

91
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Line Out Level
This setting adjusts the output level 
of the auxiliary 600 ohm balanced 
audio output port. 
Tap   /LQH2XW/HYHO from the Audio 
screen to display the Line Out Level 
screen. 
Select either: +12, +9, +6, +3, 0, -3, 
-6, -9, -12 dBm.
To reveal more items, either swipe 
down on the touch screen or press 
.
Line In Level
This setting adjusts the input level 
sensitivity of the auxiliary 600 ohm 
balanced audio input. 
Tap   /LQH,Q/HYHO from the Audio 
screen to display the Line In Level 
screen. 
Select either: +9, +6, +3, 0, -3, -6, 
-9, -12, -18, -24 dBm. 
To reveal more items, either swipe 
down on the touch screen or press 
.
Audio Record
This option is used to monitor con-
versations. It utilises the line audio to  
listen to the received and transmitted 
audio. Connect another device to 
record the conversation.
Tap   $XGLR5HFRUG from the Audio 
screen to display the Audio Record 
screen. 
Select either: Disabled or Enabled.

92
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
RF
Tap   RF from the Settings screen to 
display the RF screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
displays. 
A brief description of each of the 
items is described beneath the items.
The current status of each of the 
items is displayed to the right.
To reveal more items, either swipe 
down on the touch screen or press 
.
Each item is described below.
Rx Preamp
(QDEOHVRUGLVDEOHVWKH5)SUHDPSOLÀHU7KHSUHDPSOLÀHUSURYLGHVDQDGGL-
WLRQDOUHFHLYHUJDLQRIG%*HQHUDOO\WKH5)SUHDPSOLÀHULVVZLWFKHGRIIZKHQ
an automatic mobile antenna is in use as these antennas have a built-in RF 
SUHDPSOLÀHU
Tap   Rx Preamp from the RF screen 
to display the Rx Preamp screen. 
Select either: Disabled or Enabled.

93
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tx Over Beep
When this option is selected, the Transceiver transmits a short tone after the 
PTT button is released. The tone provides an audible indication to the Operator 
at the remote station that the local station has stopped transmitting.
Tap   7[2YHU%HHS from the RF 
screen to display the Tx Over Beep 
screen.
Select either Disabled or Enabled.
Transmit Timeout
When this feature is enabled, the Transceiver will stop transmitting if the PTT 
button is held on for more than the allowed time limit. For example, if the 
microphone is inadvertently jammed under a seat. Releasing the PTT button 
will re-enable transmission.
Tap   Transmit Timeout from the RF 
screen to display the Transmit Time-
out screen.
Set the maximum transmit time to 
either one, two, or three minutes. 
Alternatively, this transmit timeout 
can be disabled. 

94
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Noise Blanker
This setting allows the predictive noise blanker to be switched on or off. The 
noise blanker is useful to reduce the interference caused within vehicles with 
petrol engines.
Note: The noise blanker will not be effective in situations where for example, exter-
nal power line noise is blanketing the receiver.
Tap   1RLVH%ODQNHU from the RF 
screen to display the Noise Blanker 
screen. 
Select either: Off or On.
Note: In certain situations noise blank-
ers can cause intermodulation in re-
ceivers. In these cases the noise blanker 
should be disabled.
The noise blanker can also be con-
trolled from the Swipe menu (see 
page 138).
Tx Power Level
This section sets the RF power output of the Transceiver. 
Tap   7[3RZHU/HYHO from the RF 
screen to display the Tx Power Level 
screen. 
Select either: 10 W, 30 W, 125 W, or 
150 W.

95
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
AGC Hang
7KLVVHFWLRQDOORZVWKH$*&FRQÀJXUDWLRQRIWKHUHFHLYHUWREHVHWWRHLWKHU
Hang AGC or Hang Off. The selection depends on the receiver environment and 
should be set for optimum receiver performance. In the presence of high static 
and sporadic noise, the function of the hang AGC may result in gaps in the 
received signal due to the slow AGC recovery.
Tap   AGC Hang from the RF screen to 
display the AGC Hang screen. 
Select either: Hang Off or Hang AGC.
Broadcast Filter
Tap   %URDGFDVW)LOWHU from the RF 
screen to display the Broadcast Filter 
screen. 
With the Broadcast Filter enabled, 
strong broadcast signals below 
0+]ZLOOEHÀOWHUHGRXW
Select either: Disabled or Enabled.
Preselector
Tap   3UHVHOHFWRU from the RF screen 
to display the Preselector screen. 
Select either: None or Sunair F9800.
The Preselector can be used for 
selectable gain and automatic RF 
overload protection.

96
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
IO
Tap   IO from the Settings screen to 
display the IO screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. 
Note: Antenna 2 Type is only available if 
connected to a Break out Box (BoB).
A brief description of each of the 
items is described beneath the items.
The current status of each of the 
items is displayed to the right.
To reveal more items, either swipe 
down on the touch screen or press 
.
Each item is described below.
RS232 Out
This setting enables or disables RS-232 Selcall information output from the 
Transceiver via the 25 pin auxiliary connector.
Tap   RS232 Out from the IO screen to 
display the RS232 Out screen. 
Select either: Disabled or Enabled.
Note: This command does not allow 
RS-232 control of the Transceiver as 
enabled when the RS-232 option is 
ÀWWHG,WLVXVHGWRFRQWUROWKHRXWSXWRI
Selcall information used by some exter-
nal programs such as vehicle tracking.

97
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
RS232 Baud Rate
This menu option allows the selection 
of the RS232 Baud rate.
The higher the baud rate, the faster 
data is sent / received. However, 9600 
should be selected for compatible 
devices.
Tap   RS232 Baud Rate from the IO 
screen to display the RS232 Baud 
Rate screen. 
Select either: 9600 or 115200.
EXT Alarm Type
This setting sets the action of the external alarm output when a Selcall is 
received by the Transceiver. It can be set to either a pulse output (for use with 
a horn) where the output is activated 15 seconds on, 15 seconds off; or a con-
stant output (for use with a rotating beacon). Both are reset by pressing   
or the PTT button.
Tap   Ext Alarm Type from the IO 
screen to display the Ext Alarm Type 
screen. 
Select either: Pulsed or Latched.

98
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Antenna 1 Type
This menu sets the antenna type or 
OLQHDUDPSOLÀHUXVHGZLWKWKH7UDQV-
ceiver.
Tap   Antenna 1 Type from the IO 
screen to display the Antenna 1 Type 
screen. 
To reveal more items, either swipe 
down on the touch screen or press 
.
Select an antenna type from the 
following:
Antenna Type Select when . . . 
Base Station Base station antennas such as the Barrett 2012 series are used. 
No tuning signals are emitted on channel change. This selection 
should also be used when operating with a Barrett 2014 manu-
al tapped whip.
910 Mobile Ant Using a Barrett 910 automatic tuning mobile antenna
911 Auto Tuner Using a Barrett 911 automatic tuner
2019 Mobile Ant Using a Barrett 2019 automatic tuning mobile HF antenna
2018 Loop Ant Using the 2018 Mobile magnetic loop HF antenna
4075 Linear 8VLQJWKH7UDQVFHLYHUZLWKD%DUUHWWVHULHVOLQHDUDPSOLÀHU
4075 Linear with 
ATU
8VLQJWKH7UDQVFHLYHUZLWKD%DUUHWWVHULHVOLQHDUDPSOLÀHU
with ATU. 
4011 Auto Tuner Using a Barrett 4011 automatic tuner
4017 Auto Tuner Using a Barrett 4017 automatic tuner

99
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Antenna 2 Type
This option is only available if connected to a Break out Box (BoB). 
Note: 4075 Linear and 4075 Linear with ATU is not available for Antenna 2 Type.
This menu sets the antenna type 
which may be used with the Trans-
ceiver when connected to a BoB.
Tap   Antenna 2 Type from the IO 
screen to display the Antenna 2 Type 
screen. 
To reveal more items, either swipe 
down on the touch screen or press 
.
Select an antenna type from the 
following:
Antenna Type Select when . . . 
Base Station Base station antennas such as the Barrett 2012 series are used. 
No tuning signals are emitted on channel change. This selection 
should also be used when operating with a Barrett 2014 manu-
al tapped whip.
910 Mobile Ant Using a Barrett 910 automatic tuning mobile antenna
911 Auto Tuner Using a Barrett 911 automatic tuner
2019 Mobile Ant Using a Barrett 2019 automatic tuning mobile HF antenna
2018 Loop Ant Using the 2018 Mobile magnetic loop HF antenna
4011 Auto Tuner Using a Barrett 4011 automatic tuner
4017 Auto Tuner Using a Barrett 4017 automatic tuner

100
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
ALE
7KH%DUUHWW$XWRPDWLF/LQN(VWDEOLVKPHQW$/(FRQWUROOHURSWLRQVLPSOLÀHVWKH
operation of HF networks by automating many of the procedures necessary to 
establish and maintain an HF link.
The ALE controller option provides complete inter-operability as required by 
FED-STD-1045 and U.S. MIL-STD-188-141C standards.
HF network stations equipped with ALE controllers automatically scan a  
pre-selected set of channels, listening for ALE calls.
If sounding is selected, stations will send out sounding calls to other stations at 
periodic intervals. These signals are analysed for link quality and stored in the 
sounded stations. All stations gradually build up a table of parameters which 
GHWHUPLQHWKHEHVWFKDQQHOVWRXVHWROLQNEHWZHHQVSHFLÀFVWDWLRQV7KHVH
tables are used by the ALE controller to determine the best channel to connect 
on when commanded by its Operator to communicate with another station.
The ALE controller’s memory stores up to 8,000 sets of LQA information, 100 
FKDQQHOFRQÀJXUDWLRQVDQGDFRPELQDWLRQRIDGGUHVVFRQÀJXUDWLRQV
(self-address and other address). Plus, it has the ability to save unknown 
station information in an Auto Fill queue. This allows new stations to join the 
ALE network without having to manually re-program the network settings of 
HDFK7UDQVFHLYHULQWKHQHWZRUN7KHUHDUHVORWVDYDLODEOHIRU$/($XWRÀOO
addresses.
ALE Set-up Overview
The ALE network parameters are determined by a network supervisor. The net-
work supervisor programs all the Transceivers in the network with the required 
addressing and channel information using the Barrett 4050 HF SDR Program-
PLQJ6RIWZDUH31%&$SULRUWRÀHOGXVDJH
The Barrett 4050 HF SDR Programming software (P/N BCA40001) is used to 
transfer pre-determined network information to each Transceiver. 
As ALE’s prime purpose is to automate many of the procedures necessary to 
establish and maintain an HF link, it is only necessary for the Operator to enter 
the desired station to call and activate the ALE call sequence as described in 
this section.
Various operational parameters can be changed within the protected menu 
ALE section as required by the Operator. The ALE Settings section on page 101 
describes these functions.

101
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Combined ALE / Selective Call - Overview
The combined ALE / Selective Call capability allows the user to receive and 
transmit ALE and Selcall type calls on channels which are programmed for 
ALE scan but also have Selcall enabled on them. This means that during ALE 
channel scanning, the Transceiver can accept incoming Selcalls. However, this 
feature can only be used if the ALE scan rate is set to 2 channels per second 
(set in the Barrett 4050 HF SDR Programming Software (P/N BCA40001)).
ALE State Settings for 2G
Tap   ALE from the Settings screen to 
display the ALE Settings screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. 
To reveal more items, either swipe 
down on the touch screen or press 
.
Note: The list shown opposite is for an 
ALE state of 2G mode only. 
A brief description of each of the 
items is described beneath the items.
The current status of each of the 
items is displayed to the right.
Each item is described below.

102
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Note: The ALE Settings screen for an 
ALE State of 3G mode (shown oppo-
site) differs from 2G mode.
The list of items for 2G mode is de-
scribed below.
The list of items for 3G mode is 
shown on page 107.
ALE State
Tap   ALE State from the ALE Set-
tings screen to display the ALE State 
screen. 
Select either: Disabled, ALE 2G, or 
ALE 3G.
Depending on your choice, the list of 
items will change in the ALE Settings 
screen.
Preset Map
Tap   Preset Map from the ALE Set-
tings screen to display the ALE Preset 
Maps screen. 
To reveal more items, either swipe 
down on the touch screen or press 
.
Tap an ALE Preset Map from the 
displayed list. 

103
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Response Control
To allow the ALE system to respond to any incoming ALE calls (including auto-
matic soundings), ensure the Response Control is set to Enabled.
Tap   Response Control from the 
ALE Settings screen to display the 
Response Control screen. 
Select either: Off, Enable (Global), or 
Preset.
Sounding Control
ALE operates normally both transmitting and receiving sounds when Sounding 
Control is set to Enable. In some circumstances, it is desirable not to transmit 
soundings. In this case, Sounding Control is set to Disable. Sounding is limited 
WRFHUWDLQFKDQQHOVSUHSURJUDPPHGE\WKH$/(ÀOOSURJUDP7KH$/(V\VWHP
will continue to make and respond to calls (depending on the Response Control 
settings).
Tap   Sounding Control from the 
ALE Settings screen to display the 
Sounding Control screen. 
Select either: Off, Enable (Global), or 
Preset.

104
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Sounding Address
&RQÀJXUHVWKHVHOIDGGUHVVXVHGGXULQJDQDXWRPDWLFVRXQGLQJ6RXQGLQJ
Control must be set to Global Sounding On). If the sounding control is set to 
an individual preset, the address used is dependent on the active channel.
Tap   Sounding Address from the 
ALE Settings screen to display the ALE 
Call Self ID screen. 
To reveal more items, either swipe 
down on the touch screen or press 
.
Tap an ALE Call Self ID from the dis-
played list.
LQA Exchange
This option enables or disables the 
exchange of LQA information with 
other stations.
Tap   /4$([FKDQJH from the ALE 
Settings screen to display the LQA 
Exchange screen. 
Select either: Disabled or Enabled.

105
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
LQA Averaging
This option sets the method used to update an existing link quality value stored 
in ALE processor memory when the new link quality value is worse than the 
stored value.
The option can be set to either replace the old values with the new values or 
replace the old values with different weighted averages of the old values and 
new readings.
Averaging reduces the effect that one bad reading might otherwise have on a 
perfect channel. If a new reading is better than an old value, the old value is 
replaced by the reading. There are four different averaging formulas available:
Tap   /4$$YHUDJLQJ from the ALE 
Settings screen to display the LQA 
Averaging screen. 
Select either:  
No Averaging,  
(old + new)/2,  
((3*old)+new)/4, or  
((7*old)+new)/8.
LQA Decay Rate
7KLVRSWLRQVHWVWKHDUWLÀFLDOGHFD\UDWHIRUWKHOLQNTXDOLW\LQIRUPDWLRQWKDWLV
stored in the link quality table within the ALE processor.
Switching the sounding off and setting a decay rate of two hours would result 
in the recording of a perfect channel (100% channel quality) decaying to an 
unusable channel (0% channel quality) over a period of two hours.
Tap   /4$'HFD\5DWH from the ALE 
Settings screen to display the LQA 
Decay Rate screen. 
Select either: Disabled, 1, 2, 4, 8, 24, 
or 48 hours.
To reveal more items, either swipe 
down on the touch screen or press 
.

106
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Threshold Test
Used to select which type of threshold test is used to determine what quality 
ALE channel is acceptable for communication.
Tap   Threshold Test from the ALE 
Settings screen to display the Thresh-
old Test screen. 
Select either: None, BER, SINAD, or 
Both.
SINAD Threshold
This option sets the SINAD threshold 
(in dB) at which an ALE channel is 
considered usable.
Tap   6,1$'7KUHVKROG from the ALE 
Settings screen to display the SINAD 
Threshold screen. 
Type a value between 0 and 30 dB, 
then tap Enter.

107
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
BER Threshold
This option selects the BER threshold at which an ALE channel is considered 
usable. If the required BER is not reached in the reply from the remote station, 
the link establishment process is rejected. Depending on the retry setting, the 
link establishment would continue on another link.
Tap   BER Threshold from the ALE 
Settings screen to display the BER 
Threshold screen. 
Type a value between 0 and 30 dB, 
then tap Enter. 
Selecting 30 effectively means that all 
links are allowed.
ALE State Settings for 3G
Selecting ALE State 3G Mode displays 
a different menu shown opposite.
These menu items are described 
below.

108
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Voice Link Timeout
This option is only available if the ALE 
State is set to 3G.
Tap   9RLFH/LQN7LPHRXW from the 
ALE Settings screen to display the ALE 
3G Voice Link Timeout screen.
Type the number of seconds and tap 
Enter to save and return to the ALE 
Settings screen. 
Data Link Timeout
This option is only available if the ALE 
State is set to 3G.
Tap   'DWD/LQN7LPHRXW from the 
ALE Settings screen to display the ALE 
3G Data Link Timeout screen.
Type the number of seconds and tap 
Enter to save and return to the ALE 
Settings screen.  
LQA Averaging
This option sets the method used to update an existing link quality value stored 
in ALE processor memory when the new link quality value is worse than the 
stored value.
The option can be set to either replace the old values with the new values or 
replace the old values with different weighted averages of the old values and 
new readings.
Averaging reduces the effect that one bad reading might otherwise have on a 
perfect channel. If a new reading is better than an old value, the old value is 
replaced by the reading. There are four different averaging formulas available:

109
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tap   /4$$YHUDJLQJ from the ALE 
Settings screen to display the LQA 
Averaging screen. 
Select either:  
No Averaging,  
(old + new)/2,  
((3*old)+new)/4, or  
((7*old)+new)/8.
LSU Mode
Link Set Up is only available if the ALE 
State is set to 3G.
Tap   /680RGH from the ALE Settings 
screen to display the LSU Mode 
screen.
From the drop-down menu select 
either: 
• Synchronous
Select the LSU mode to Synchro-
nous to set all the stations to be 
in synch. However, all Transceivers 
have to have GPS enabled so they 
can all scan at the same interval 
on the same channel. Calls only 
need a short duration to enable 
other Transceivers to hear at the 
same time. The advantages of 
synchronous include: shorter calls, 
shorter soundings, and reduced 
QHWZRUNWUDIÀF
• Asynchronous.
If there is no GPS signal, set the 
LSU mode to asynchronous. How-
ever, longer calls are necessary 
to enable successful scans. GPS 
is not necessary and the network 
doesn’t have to be synchronised. 
Note that the linking will take 
longer.

110
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
ALE 3G Channels
This option is only available if the ALE 
State is set to 3G.
Tap   ALE3G Channels from the ALE 
Settings screen to display the ALE 3G 
Channel List screen.
Tap the channel from the displayed 
list. 
ALE 3G Addresses
This option is only available if the ALE 
State is set to 3G.
Tap   ALE3G Addresses from the ALE 
Settings screen to display the ALE 3G 
Address List screen.
Tap the address from the displayed 
list. 
Save the ALE Settings
$IWHUFRQÀJXULQJWKHDERYHLWHPV
tap   to save the ALE Settings.
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
Tap   Yes.

111
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
System Info
Tap   System Info from the Settings 
screen to display the System Informa-
tion screen.
A list of items that may be viewed is 
displayed. 
A brief description of each of the 
items is described beneath the items.
Each item is described below.
System Status
Tap   System Status from the System 
Information screen to display the 
System Information screen. 

112
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Version Information
Tap   9HUVLRQ,QIRUPDWLRQ from the 
System Information screen to display 
the Software Version Information 
screen.
A list of items that may be viewed is 
displayed.
To reveal more items, either swipe 
down on the touch screen or press 
.

113
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Transceiver Options
Tap   7UDQVFHLYHU2SWLRQV from the 
System Information screen to display 
the SDR Option Information screen.
A list of items that may be viewed is 
displayed.
To reveal more items, either swipe 
down on the touch screen or press 
.
Tap each option to toggle between 
enabling or disabling the options.
Enter Option PINs
Tap   (QWHU2SWLRQ3,1V from the 
SDR Option Information screen to 
display the Option PIN screen. 
Tap the appropriate characters from 
the keyboard into the Option PIN 
ÀHOG
Tap   Enter to save and return to the 
SDR Option Information screen.

114
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
4050 Serial Number
Tap   6HULDO1XPEHUfrom the 
System Information screen to display 
the 4050 Serial Number screen. 
The 4050 serial number displays.
Tap   Ok to close the 4050 Serial Num-
ber screen and return to the System 
Information screen.
Call History
This function is also available by pressing  . 
Refer to page 47 for further information.
Export
7RH[SRUWWKHGHYLFH·VFRQÀJXUD-
tion settings, insert a USB into the 
device’s USB socket. Use either the 
front USB socket using a mini USB or 
the USB socket located at the top of 
the device. 
Tap   Export from the Settings screen 
to display the Export screen.
7DS([SRUW&RQÀJXUDWLRQWRGLVSOD\
WKH&RQÀJXUDWLRQ)LOH1DPHVFUHHQ
The default name displays. Use the 
keyboard to type an alternative name 
RIWKHFRQÀJÀOHWRH[SRUWWRWKH
USB.
1RWH7KHÀOHH[WHQVLRQVGUSDFNPXVW
not be changed.
Tap    to save. 

115
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
Tap   Yes.
7KH([SRUW&RQÀJXUDWLRQVFUHHQ
displays showing a progress bar con-
ÀUPLQJWKHSURJUHVVRIWKHH[SRUW
When prompted, tap 2. and remove 
the USB.
Display
Tap   'LVSOD\ from the Settings screen 
to display the Display screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
is displayed. 
A brief description of each of the 
items is described beneath the items.
The current status of each of the 
items is displayed to the right.
Each item is described below.

116
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Level of Display Backlight
Adjust the backlight level on the LCD 
display to one of three brightness 
levels.
Tap   /HYHORIWKH'LVSOD\%DFNOLJKW 
from the Display screen to display the 
Level of the Display Backlight screen. 
Select either: Low, Medium, High or 
Very High.
Backlight Timeout
Set the backlight timeout after the 
last key press.
Tap   %DFNOLJKW7LPHRXW from the 
Display screen to display the Back-
light Timeout screen. 
Select either: Short Timeout (1 min-
ute), Long Timeout (3 minutes), or 
Always On.
Note: The Transceiver’s power con-
sumption is reduced when the back-
light has a short timeout.
Display Timeout Behaviour
Tap   'LVSOD\7LPHRXW%HKDYLRXU 
from the Display screen to display the 
Display Timeout Behaviour screen. 
Select either: Dim Display or Switch 
Off Display.

117
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Transmit Meter Mode
This will enable the display to either 
show or hide the transmit wattage.
Tap   Transmit Meter Mode from 
the Display screen to display the 
Transmit Meter Mode screen. 
Select either: Chevrons or Watts.
Receive Meter Mode
This will enable the display to show 
different units of value for the Re-
ceive Mode’s signal strength.
dBm measures the units in decibels, 
uV measures the units in microvolts, 
and S Meter measures the units in S 
(strength) values. For example, 
1 (weakest) to 7 (strongest).
Tap   5HFHLYH0HWHU0RGH from the 
Display screen to display the Receive 
Meter Mode screen. 
Select either: dBm, uV, or S Meter.
Temperature Units
This will enable the SDR to show 
which temperature units to display.
Tap   7HPSHUDWXUH8QLWV from the 
Display screen to display the Tem-
perature Units screen. 
Select either: Celsius or Fahrenheit.

118
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Network
Tap   1HWZRUN from the Settings 
screen to display the Network Set-
tings screen.
The current status of the WiFi Opera-
tion Mode is displayed to the right
Tap   WiFi Operation Mode to 
change the status.
WiFi Operation Mode
Tap   WiFi Operation Mode from the 
Network Settings screen to display 
the WiFi Operation Mode screen. 
Select either: Off, WiFi Client, or WiFi 
Access Point.
$:L)LFOLHQWFRQQHFWVWRDVSHFLÀHG
Internet IP address and port.
A WiFi Access Point is a device that 
creates a wireless local area network, 
or WLAN, and projects a Wi-Fi signal 
to a designated area.
WiFi Client
If WiFi Client was selected from 
the WiFi Operation Mode screen, the 
following screen displays.

119
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tap   WiFi from the Network Settings 
screen to display the WiFi Network 
Selection screen. 
Tap   5HVFDQ:L)L if necessary to 
display more WiFi networks.
Select a WiFi network to connect to 
from the list.
You may be prompted for a password 
in order to connect to your chosen 
network.
Tap the 3DVVSKUDVHÀHOG from the 
WiFi Network Setup screen to display 
the WiFi Passphrase screen. 
Tap the appropriate characters from 
the keyboard into the WiFi Pass-
SKUDVHÀHOG
Tap    to save and return to 
the WiFi Network Setup screen.
WiFi Passphrase (10/255)
The password entered in the Pass-
SKUDVHÀHOGLVQRZGLVSOD\HGDV
asterisks.
Tap   &RQQHFWWR%&*XHVW.

120
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
$PHVVDJHGLVSOD\VFRQÀUPLQJWKDW
your selected network is connecting.
A further message displays con-
ÀUPLQJWKH:L)LFRQQHFWLRQHLWKHU
successful or failed.
WiFi Access Point Mode
If :L)L$FFHVV3RLQW was select-
ed from the WiFi Operation Mode 
screen, the following screen displays.
WiFI Access Point Setup
Tap   :L)L$FFHVV3RLQW from the Net-
work Settings screen to display the 
WiFi Access Point screen.

121
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
66,'
Tap   66,'6HUYLFH6HW,GHQWLÀHU
from the WiFi Access Point screen to 
display the WiFi Access Point SSID 
screen. The numbers in the parenthe-
sis indicate how many characters you 
have used / total number of charac-
ters allowed.
Tap the appropriate characters from 
the keyboard into the WiFi Access 
3RLQW66,'ÀHOG
Tap    to save and return to 
the WiFi Access Point screen.
Password
Tap   Password from the WiFi Access 
Point screen to display the WiFi Ac-
cess Point Password screen.
Tap the appropriate characters from 
the keyboard into the WiFi Access 
3RLQW3DVVZRUGÀHOG
Tap    to save and return to 
the WiFi Access Point screen.
$FFHVV3RLQW&KDQQHO
Tap   $FFHVV3RLQW&KDQQHO from the 
WiFi Access Point screen to display 
the Access Point Channel screen.
Select from channel 0 to 13. Channel 
0 is for automatic assignment.

122
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Country
Tap   Country from the WiFi Access 
Point screen to display the Country 
screen.
Select the appropriate country.
WPS Push Button
Tap   WPS Push Button (WiFi Pro-
tected Setup) from the WiFi Access 
Point Mode screen to display the WPS 
Connection screen.
This option will initiate the WiFi pro-
tection setup.

123
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
BoB
The Break out Box (BoB) icon only displays if the 4050 HF SDR Transceiver is 
connected to a BoB.
The BoB is designed to connect two antennas or two ATUs to the 4050 HF SDR 
Transceiver. Refer to the Break out Box Installation Manual (P/N BCM400500) 
for further information.
This menu setting option is only avail-
able if the Transceiver is connected to 
a Break out Box (BoB) 
Tap   BoB from the Settings screen to 
display the BoB screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
displays. A brief description of each 
of the items is described beneath the 
items.
Each item is described below.
BoB Name
Tap   %R%1DPH from the BoB screen 
to display the BoB Name screen.
The numbers in the parenthesis indi-
cate how many characters you have 
used / total number of characters 
allowed.
Use the keyboard to type or edit the 
name of the BoB, then tap   
to save.

124
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Network Settings
Tap   1HWZRUN6HWWLQJV from the BoB 
screen to display the BoB Network 
Settings screen.
$OLVWRILWHPVWKDWPD\EHFRQÀJXUHG
displays. To reveal more items, either 
swipe down on the touch screen or 
press  .
A brief description of each of the 
LWHPVZKLFKPD\EHFRQÀJXUHGLV
described beneath the items.
The current status of each of the 
items is displayed to the right.
Each item on the list is described 
below.
DHCP
'\QDPLF+RVW&RQÀJXUDWLRQ3URWRFRO'+&3LVDFOLHQWVHUYHUSURWRFROWKDW
automatically provides an Internet Protocol (IP) host with its IP address and 
RWKHUUHODWHGFRQÀJXUDWLRQLQIRUPDWLRQVXFKDVWKHVXEQHWPDVNDQGGHIDXOW
gateway.
The DHCP is controlled by a DHCP server that dynamically distributes network 
FRQÀJXUDWLRQSDUDPHWHUVVXFKDV,3DGGUHVVHVIRULQWHUIDFHVDQGVHUYLFHV
Tap   '+&3 from the BoB Network 
Settings screen to display the DHCP 
screen.
Select Off to enter the network set-
tings manually, or On to automatical-
O\REWDLQWKHQHWZRUNFRQÀJXUDWLRQ
settings.
7KHPDQXDOQHWZRUNFRQÀJXUDWLRQ
settings are described below.

125
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
IP Address
Tap   IP Address from the BoB Net-
work Settings screen to display the IP 
Address screen.
The numbers in the parenthesis indi-
cate how many characters you have 
used / total number of characters 
allowed.
Use the keyboard to type or edit the 
IP Address, then tap 
y
p
 to 
save.
Network Mask
Tap   1HWZRUN0DVN from the BoB 
Network Settings screen to display 
the Network Mask screen.
The numbers in the parenthesis indi-
cate how many characters you have 
used / total number of characters 
allowed.
Use the keyboard to type or edit the 
Network Mask, then tap   to 
save.
Default Gateway
Tap   'HIDXOW*DWHZD\ from the BoB 
Network Settings screen to display 
the Default Gateway screen.
The numbers in the parenthesis indi-
cate how many characters you have 
used / total number of characters 
allowed.
Use the keyboard to type or edit the 
Default Gateway, then tap   
to save.

126
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Primary DNS
Tap   3ULPDU\'16 from the BoB Net-
work Settings screen to display the 
Primary DNS screen.
The numbers in the parenthesis indi-
cate how many characters you have 
used / total number of characters 
allowed.
Use the keyboard to type or edit the 
Primary DNS, then tap 
p
p
p
 to 
save.
Secondary DNS
Tap   6HFRQGDU\'16 from the BoB 
Network Settings screen to display 
the Secondary DNS screen.
The numbers in the parenthesis indi-
cate how many characters you have 
used / total number of characters 
allowed.
Use the keyboard to type or edit the 
Secondary DNS, then tap   to 
save.

127
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Network Status
Tap   1HWZRUN6WDWXV from the BoB 
screen to display the BoB Network 
Status screen.
A list of items display. To reveal more 
items, either swipe down on the 
touch screen or press  .
The current setting of each of the 
items is displayed to the right.
Import / Update
To update the Transceiver, insert a 
thumb drive containing the update 
ÀOHVLQWRWKH86%VRFNHWRQWRSRI
the front panel.
Tap   ,PSRUW8SGDWH from the 
Settings screen to display the Choose 
Action screen.
6HOHFWHLWKHU,PSRUW&RQÀJXUDWLRQRU
Program Firmware.
These options are described below.

128
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
,PSRUW&RQÀJXUDWLRQ
7RXSGDWHWKHFRQÀJXUDWLRQWDS
,PSRUW&RQÀJXUDWLRQ from the 
Choose Action screen described 
above.
The Choose a File screen displays.
6HOHFWWKHUHTXLUHGÀOHWRLPSRUW
$FRQÀUPDWLRQPHVVDJHGLVSOD\V
DVNLQJLIWKHVHOHFWHGFRQÀJÀOHLVWR
be imported.
Tap   YesWRGLVSOD\WKH,PSRUW&RQÀJ-
uration screen. 
A progress bar indicates the progress 
of the import. 
7KH8SORDGLQJ&RQÀJXUDWLRQVFUHHQ
displays showing the progress and 
completion of the upload.

129
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Program Firmware
7RXSGDWHWKHÀUPZDUHWDSPro-
gram Firmware from the Choose 
Action screen described above.
The Choose a File screen displays.
6HOHFWWKHUHTXLUHGÀOHWRLPSRUW
Tap   YesWRFRQÀUPWKHÀOHLPSRUW
The Firmware Update screen displays 
showing the progress of the process.
Tap the checkbox to automatically 
reboot after a successful update.
Tap   Abort to stop the process.

130
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
'XULQJWKHSURFHVVWKHFXUUHQWÀUP-
ware will be erased.
Warning: During this stage, do not 
power off.
7KHÀQDOSURFHVVLQGLFDWHVWKDWWKH
QHZÀUPZDUHZLOOEHSURJUDPPHG
Warning: During this stage, do not 
power off.
The Transceiver will automatically 
reboot after the update has been 
successful.
Channels
Tap   Channels from the Home screen 
to display the Select Channel screen.
A list of channels along with a brief 
description of the channel’s attri-
butes is displayed. 
For the highlighted example shown 
opposite, the Channel number 0002 
has a channel label BARRETT; a 
frequency of 5940 kHz; USB mode; 
125 W transmit power; and an Inter-
national Selective Call mode.
To reveal more channels, either swipe 
down on the touch screen or press 
.
To add a channel, see page 61.

131
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Selecting a Channel
Tap   Channels from the Home screen 
to display the Select Channel screen.
Select the desired channel.
The selected channel now displays 
on the Home screen.
The example shows the Channel 
number 0002 has a channel label 
BARRETT; a frequency of 5940 kHz; 
USB mode; 125 W transmit power; 
and an International Selective Call 
mode. It also shows that the channel 
has -120 dBm and is receiving.
Search For a Channel
Tap    from the Select Channel 
screen to display the Channel Num-
ber screen. 
Tap the appropriate digits for the 
search, then tap Enter.

132
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Hop
This option requires an Export Permit.
The Transceiver employs a unique frequency 
hopping system that uses an external ESU  
(Encryption Synchronisation Unit).
Note: The external ESU must be connected  
and providing valid data for the frequency  
hopping system to operate.
Selecting the Hop Band
Select a channel which is used for normal / clear transmission based on normal 
procedures used when using an HF system. This channel frequency and mode is 
used by the Transceiver to determine the hop band.
Note: The reference frequency is NOT a centre frequency for the hop band. It simply 
determines which of the preset hop bands are selected.
Entering the Security Code
For hopping PIN code entry, refer to SDR Options and Option PINs on page 
113. The security PIN code is based on the information below. 
Security Codes and Bandwidths
Security codes 00000000 to 19999999 are used for hopping ± 2 kHz
Security codes 20000000 to 49999999 are used for hopping ± 16 kHz
Security codes 50000000 to 99999999 are used for hopping ± 128 kHz
Hopping up to ± 2 kHz is useful for narrow band antennas such as when using 
antenna tuners in manpack operation.
Hopping up to ± 128 kHz can be used with wideband antennas such as base 
station broadband antennas.
Once entered, the security code for security reasons can never be retrieved or 
viewed.

133
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
To Enable Hopping Mode
Tap   Hop from the Home screen to 
begin the hopping sequence.
As soon as the display indicates 
“Hopping Mode“, communicating 
with other stations using the same 
channel frequency and the same hop-
ping code, may commence.
To Disable Hopping Mode
Either tap Hop or press   to dis-
able hopping mode.
The display indicates “Hopping Can-
celled“.

134
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tune
When tuning, the Transceiver will transmit, at the power level selected, a carrier 
on the channel selected, at 1.6 kHz above the Suppressed Carrier Frequency 
(SCF) (displayed frequency) of that channel.
Tap and hold Tune from the Home 
screen for three seconds to begin 
the automated tuning sequence.
The keypad will illuminate red whilst 
the Transceiver is tuning.
When the tune process is completed 
the display will show “Tune Ok“, or 
“Tune Failed” in the top left-hand 
corner.
The 96:5EULHÁ\GLVSOD\VEHORZWKH
IUHTXHQF\LQGLFDWLQJWKHHIÀFLHQF\
of the selected antenna.
Mode
Tap   Mode from the Home screen to 
cycle through USB, LSB, FSK, CW or 
AM for the current channel
The current mode is displayed in 
the lower left hand corner (green 
background). The example shows the 
Transceiver in USB mode.
Note: The mode icon will only tem-
porarily set the mode for a selected 
channel, the mode reverting to that 
channel’s programmed default mode 
after the channel is changed, or the 
Transceiver is turned off.
For further information on setting up 
modes for channels, see page 63. 
1RWH,IWKH,)ÀOWHURSWLRQLVSK\VLFDOO\
ÀWWHGDQGHQDEOHGLQVRIWZDUHWKHÀO-
ter will automatically be selected when 
either CW and AFSK mode are selected.

135
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
NR
This option allows the DSP noise reduction depth to be adjusted to suit the 
Operator’s comfort requirements.
Tap   15 from the Home screen to 
cycle through the options: Off, 
Low, Medium, or High.
The example shows an NR set to 
High.
After two seconds, the NR indica-
tor is hidden and is replaced by the 
channel label.
When the noise reduction system 
is active (low, medium or high) the 
NR icon displays an indication of 
the setting.
   NR 
   Off
NR 
Low
NR 
Medium
     NR 
    High
Scan
Scanning allows the Transceiver to monitor several channels for incoming calls. 
It is particularly useful as the nature of HF signal propagation means that not 
all channels are available for communications at one time. For example, a 
station calling a station that is in scanning mode can send a Beacon Call on any 
channel knowing the station it is calling is monitoring all its available channels. 
A response from the scanning station will only occur on channels that are open 
for communication.
Stations in scan can also monitor channels for voice activity or signals received 
that has a signal strength over a preset level.
The Transceiver will stop scanning for the following reasons:
•  Signal Strength Level (SSL) mute is selected and a signal with a level 
greater than the pre-set threshold is received.
•  Audio (syllabic) mute is selected and a voice signal is detected.

136
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tap   6FDQ from the Home screen to 
initiate scanning the channels.
Whilst scanning The Rx icon changes 
colour from green to orange, several 
options on the screen are hidden 
(Menu, Channels, Hop, Tune, and 
Mode), the Scan icon is animated, 
and the keypad’s directional keys are 
disabled.
To stop scanning, press  .
See page 72 for setting the attri-
butes for scanning.
Selcall Scan
When a Selcall signal is detected, and the channel has Selcall enabled, no mat-
ter which mute type is selected the Transceiver will stop scanning and decode 
the Selcall. The Transceiver will only stop scanning when a Selcall is detected.
Signal Strength Scan (SSL Scan)
If the signal strength mute (squelch) is active and a signal with a level greater 
than the pre-set threshold is received, the scan will halt. Scan will remain 
halted while the signal level stays above the preset threshold. Once the signal 
decreases below the pre-set threshold level, for a period greater than the scan 
dwell period, scanning will resume.
See page 77 for information on the SSL pre-set threshold and page 73 for 
information on the scan dwell period.
Voice (Syllabic) Scan
If the audio mute (squelch) is active and is opened, scanning will halt. Scanning 
will remain halted while the audio mute is open. Once the mute closes for a 
period greater than the scan dwell period, scanning will resume.

137
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Mute
Tap   Mute from the Home screen to scroll through the options: 
Audio Mute Select Audio (syllabic) Mute (squelch) to enable the receiv-
er audio when speech is detected on the selected channel. 
Note: The syllabic mute sensitivity can be set to three levels. 
See page 77.
SSL Mute Select Signal Strength Level (SSL) Mute (squelch) to enable 
the receiver audio when the received signal strength ex-
ceeds the nominated threshold level. 
Note: The signal strength mute level can be set to three levels. 
See page 77.
Selcall Mute Select Selcall Mute (squelch) to enable the receiver audio 
after a Selcall sent to the unit has been received and de-
coded successfully.
Mute Disabled
The example opposite shows SSL 
Mute.
After three seconds, the Mute indi-
cator is hidden and replaced by the 
channel label.
A further indication of the mute 
status is shown in the lower right 
hand corner of the Mute icon. A red 
circle with a diagonal line indicates 
that one of the mute’s status is acti-
vated. The absence of the red circle 
indicates that mute is disabled.
Audio  
Mute
SSL 
Mute
Selcall 
Mute
   Mute 
 Disabled
See page 77 for setting the attributes for Mute.

138
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Swipe Menu
From the Home screen, swipe hori-
zontally from left to right to display 
the following screen.
This screen shows various statistical 
data for the Transceiver, and if GPS 
enabled, displays the GPS coordi-
nates. 
From this screen various options may 
be set. Tap the following icons to en-
able or disable the options described 
below.
When enabled, these icons will illuminate green. If an option is not enabled, 
the icons will appear grey.
1RLVH%ODQNHU 
Used to reduce interference from vehicles with petrol engines  
(see page 94).
TC2 Program
If a TC2 module is installed and TC2 Programming Mode is 
enabled, the icon will display TC2 Program. If TC2 Programming 
Mode is disabled, the icon will be blank. (See page 58.)
Internal Modem
If a TC2 module is not installed, the TC2 Program icon will be 
replaced by the Internal Modem icon. This will toggle between two 
internal modems (2020 or 4026).
2(06HFXUH
Enables Voice Encryption (See page 56) 
1RWH,IERWKWKH2(06HFXUHDQG'LJLWDO9RLFHRSWLRQVDUHÀWWHG
when one is enabled, the other is automatically disabled.
'LJLWDO9RLFH
Used to increase voice quality and reliable communications.
When transmitting or receiving a call using digital voice, the recipi-
ent’s Transceiver will automatically change to digital voice.
7KHKRPHVFUHHQZLOODOVRFRQÀUPZKHQGLJLWDOYRLFHLVHQDEOHG

139
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Wireless Application
The Barrett 4050 wireless application supports Windows PCs, iOS and Android 
devices for wireless voice and radio control.
Downloading the Barrett SDR Remote Control Head Setup 
App
For Windows PCs
Warning: It is essential to install the Bonjour app prior to installing the Barrett Con-
trol Head Installer app.
1.  Download the BonjourPSSetup.exe from: 
“https://support.apple.com/kb/DL999?viewlocale=en_US&locale=en_US”
Follow the online instructions to install the Bonjour app.
2.  Contact support@barrettcommunications.com.au for instructions on 
downloading the Barrett SDR Remote Control Head Setup.exe

140
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
For iOS and Android Devices
The Barrett SDR Control Head app may be downloaded from:
•  The App Store (iOS devices), or 
•  The Google Play store (Android devices).
Android devices can also download the app directly from the SDR Front 
3DQHO7KLVLVSUHIHUDEOHDVWKHÀUPZDUHYHUVLRQRIWKH6'5LVJXDUDQWHHG
to match the app version.
Installing the Barrett SDR Remote Control Head Setup 
App
For Windows PCs
Note: Windows 7 is the minimum system requirement for running this app.
3ULRUWRH[HFXWLQJWKH6HWXSÀOH
check whether there is an existing 
installation of the app. This must be 
XQLQVWDOOHGÀUVW
To install the app, double-click the 
Barrett SDR Remote Control Head 
6HWXSH[HÀOHDQGIROORZWKHRQOLQH
instructions. 
7KHÀQDOLQVWDOODWLRQVFUHHQLVVKRZQ
opposite with a reminder to install 
the Bonjour app, (link provided).
Select the 2SHQ%DUUHWW6'55H-
mote Control Head checkbox and 
click Finish to display the Connect to 
SDR screen.
Select the device to connect to and 
tap  .

141
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
The Connecting screen displays and 
the Busy icon animates as it attempts 
to connect the wireless device to the 
SDR.
After successfully connecting,  
the animating icon disappears and 
WKHZLÀFRQQHFWLRQLFRQFKDQJHV
from   to  .
For iOS and Android Devices
iOS devices can install the app by following the default Apple process after 
downloading.
Android devices installing the app from the SDR Front Panel need to follow 
these typical procedures.
Check whether there is an existing 
installation of the app. This must be 
XQLQVWDOOHGÀUVW
To uninstall an application, go to 
Settings > Applications
Select the existing installation.
Barrett SDR Control Head App
Wi-Fi
Settings MORE
Search   Application Manager
Bluetooth
Flight mode
Data Usage
More Connection Settings
Smart Manager
Applications

142
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tap   8QLQVWDOO to remove the app.
Barrett SDR Control Head App
  Application Manager
UNINSTALL FORCE STOP
Storage
Data Usage
Permissions
1RWLÀFDWLRQV
55.92 MB of Internal storage used
81.31 MB used since 30 Sep
Camera, Microphone, and Storage
Connect the device to the SDR ensuring the OTG (On-The-Go) adapter is  
connected to the device and not the Transceiver
After the connection is established, 
the device’s File Manager displays.
Select:  
%DUUHWW6'5&RQWURO+HDGDSN
BarrettSDRControlHead.apk
+
^
USB storage 0000-0073
USB storage...
Recent Files
My Files MORE
Search View As
Device storage
Download history
Documents
Images
Audio
Videos
USB storage 0000-0073

143
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
A warning message displays blocking 
the installation.
Tap   Settings.
Note: If the CPU architecture of the 
Android tablet is “x86” (Intel Inside), 
install  
“BarrettSDRControlHead-x86.apk” 
instead of  
“BarrettSDRControlHead.apk”.
Barrett SDR Control Head App
Install blocked
For security, your phone is set to block 
installation of apps obtained from 
unknown sources.
CANCEL      SETTINGS
Select 8QNQRZQ6RXUFHV.
Wi-Fi
Settings Search Lock screen and security
Bluetooth
Flight mode
Data Usage
More Connection Settings
Smart Manager
Applications
Sound
1RWLÀFDWLRQV
Do not disturb
Unknown sources
Encrypt device
Encrypt SD card
Find My Mobile
Info and app shortcuts
1RWLÀFDWLRQVRQORFNVFUHHQ
Screen lock type
Fingerprints
Lock screen
Allow installation of apps from 
Protect your device by encrypting
No SD card inserted
Locate and control your device 
Security
Show app shortcuts or the device
Show content
Swipe
A warning message displays.
Tap   2..Unknown sources
Allow this installation only
CANCEL      OK
¥
Installing from unknown sources may be harmful to 
your device and personal data. 
By tapping OK, you agree that you are solely responsi-
ble for any damage to your device or loss of data that 
may result from using these applications.

144
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Tap   Install to install the app.
Barrett SDR Control Head App
Do you want to install this application? It will get 
access to:
CANCEL INSTALL
take pictures and videos
record audio
modify or delete the contents of your SD card 
read the contents of your SD card
Connecting the Wireless Device to the SDR
Preparing the SDR
Prior to invoking the wireless app, 
HQVXUHWKHZLÀGRQJOHLVLQVHUWHGLQ
the USB socket located on the top of 
the front panel of the SDR.
Also, ensure the SDR’s network 
setting’s WiFi Operation mode is set 
to enable a connection between the 
SDR and the Wireless device.
The example shows the WiFi Oper-
ation mode set to WiFi Client and is 
connected to a WiFi network labelled 
SDR Access RD.
For further information on WiFi Cli-
ents, refer to the Network section on 
page 118. 

145
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Invoking the App
To invoke the application, tap   
from the wireless device’s App 
screen.
A progress bar displays as the pro-
gram loads, followed by a splash 
screen and then the Connect to SDR 
screen.
Overtype the SDR IP address if neces-
sary (the example shows 192.168.3.2) 
then tap   to connect the wireless 
device to the SDR.
The Busy icon animates as it attempts 
to connect the wireless device to the 
SDR.
After successfully connecting,  
the animating icon disappears and 
WKHZLÀFRQQHFWLRQLFRQFKDQJHV
from   to  .

146
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Exploring the App
The display and icons shown on the wireless device are the same as the front 
panel on the 4050 SDR, but includes an additional column of icons replicating 
the keypad operations of the 4050 SDR.
Channel up / scroll up
Channel down / scroll down
Clear / back one step
Make a call
Press to talk
The functionality of the Wireless application and the 4050 SDR is essentially the 
same.
Disconnecting the Wireless Device from the SDR
From the Home screen, swipe hori-
zontally from left to right to display 
the following screen.
Tap   .
$FRQÀUPDWLRQVFUHHQGLVSOD\V
Tap   Yes.

147
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Cooling Fan
The cooling fan is an optional extra which may be added to the 4050 HF SDR.
The cooling fan requires no user input as it is temperature controlled by soft-
ware, automatically activating when necessary.
Installing the Cooling Fan
Attach the cooling fan to the SDR by carefully aligning the connector pins 
located beneath the cooling fan with the socket on top of the SDR as shown 
below.
Connector pins
Four screws (located in the four corners of the cooling fan) are used to secure 
the cooling fan to the SDR.
To uninstall the cooling fan, simply reverse the installation procedure.

148
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Connectors
Note: All connectors described below are viewed looking at the rear of the Trans-
ceiver.
Power Connector
A3 A2 A1
A1  12 V DC - 28 V DC
A2 Reserved
A3 Ground
GPS Connector
Signal Level
A
B
CD
E
F
A. 1PPS
B. NMEA+
C.  5 V GPS
D. CW Key
E. GND
F. Reserved
1 Pulse per second
NMEA Data positive
GP Voltage 5 V
Active Low
Ground

149
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Aux Control Head / BoB Connector
15
610
1115
1. VCC
2.  CAN Bus positive pin
3. CH Audio+
4. Not Connected
5. Ground
6. Ground
7.  CAN Bus negative pin
8. CH Audio-
9. Not Connected
10. Line Out
11.  Linear amp ALC for Break out Box
12. 13V8 Out
13. Line In+
14. Line In-
15. 1PPS
Auxiliary Connector
1
1425
13
Pin Name Description of Function Level
1 Ground Ground 0 V
2 Rx Data RS-232 data input True RS-232
3 Tx Data RS-232 data output True RS-232
4 Reserved
5 Reserved
6 Reserved
7 RS-232 Gnd RS-232 Ground 0 V
8 ALC In Ext. ALC from Linear Amp 0-10 V

150
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Pin Name Description of Function Level
9 PTT In Auxiliary PTT input Active low 0 V
10 Aux dig in 1 Scan stop input from exter-
nal modem
Active low 0 V
11 Bal. Tx Audio In Balanced Tx audio input 
(with pin 24)
G%PWR
0 dBm
12 Bal. Rx Audio Out Balanced Rx audio output 
(with pin 25)
G%PWR
+9 dBm
13 Ground Ground 0 V
14 Reserved
15 Reserved
16 Reserved
17 Reserved
18 Aux dig out 4 Selcall alarm Active low 0 V
19 Aux dig out 5 Audio mute state Active low 0 V
20 Reserved
21 PTT / C-Mute PTT Out / Receiver Cross 
Mute
Active low 0 V
22 Reserved  
23 +13.8 V Fused Out +13.8 V Output to power 
auxiliary equipment
13.8 V @ 2 amp
24 Bal. Tx Audio In Balanced Tx audio input 
(with pin 11)
G%PWR
0 dBm
25 Bal. Rx Audio Out Balanced Rx audio output 
(with pin 12)
G%PWR
+9 dBm
Note: Balanced Rx audio out on Pin 25 and Pin 12 can be un-muted or follow the 
DXGLRPXWHGHSHQGLQJRQWKHFRQÀJXUDWLRQLQWKHSURWHFWHGPHQX,2VHFWLRQ

151
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
ATU Connector
Signal Level
A
B
CD
E
F
G
A.  GND and shield
B.  RS-232 RX / GPS Data
C. 1PPS
D. Scan
E. Tuned
F. ATU V+
G. RS-232 TX
Ground and cable shield
Receive data line of RS-232
1 Pulse per second
ATU Scan line
ATU Tuned signal
ATU Voltage 13V8
Transmit data line of RS-232
Microphone Connector
Located on the Front Panel.
Signal Level
10
1
2
3
4
5
8
6
9
7
1. MicH
2. MicL
3. GND
4. PTT
5. CH UP
6. CH DN
7. Reserved
8. Reserved
9. SPKR+
10. SPKR-
Microphone audio high
Microphone audio low
Ground
Low going PTT
Channel up
Channel down
Reserved
Reserved
Speaker microphone positive
Speaker microphone negative

152
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Control Head Rear Panel Connector
Plug located on the rear of the Front Panel.
5
1
10
6
15
11
1. VCC
2.  CAN Bus positive pin
3. CH Audio+
4. SPKR-
5. Ground
6. Ground
7.  CAN Bus negative pin
8. CH Audio-
9. SPKR+
10. Head Detect
11. Not Connected
12. Not Connected
13. Not Connected
14. Not Connected
15. Not Connected
Cooling Fan Connector
Socket located on the top of the SDR.
123
(Viewed from the rear of the SDR)
1. Ground
2.  + 12 V DC 
3. Fan detect

153
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
6SHFLÀFDWLRQV
General
Standards Designed to meet or exceed:
FCC - Part 87 and Part 90
CE#
Australian/ New Zealand standard AS/NZS 4770:2000 
and AS/NZS 4582:1999
EMC and vibration standard IEC 945#
MIL-STD 810G for shock , vibration, dust, temperature, 
altitude, humidity, and mould.#
NTIA#
JITC#
# 
Approval pending
Transmit  
frequency range
1.6 MHz to 30 MHz
Receive frequency 
range
250 kHz to 30 MHz 
Frequency stability ±0.5 ppm (±0.3 ppm optional)
Frequency  
resolution
1 Hz tunable receiver
Operating modes J3E (USB, LSB) - H3E (AM) - J2A (CW) - B2B (AFSK) soft-
ZDUHGHÀQHGÀOWHUEDQGZLGWK
Filter bandwidth )XOO\VRIWZDUHGHÀQHG)URP+]WR+]DQG
beyond. Optionally up to 16 kHz
Operating  
temperature
-30°C to +70°C relative humidity 95% , non-condensing
Frequency  
hopping
25 or 5 hops per second with External Synchronisa-
WLRQ8QLW(68VXSSOLHGZKHQWKHRSWLRQLVÀWWHG7KH
Barrett frequency hopping system requires no master 
station, all stations are synchronised and ready to com-
municate on switch on, synchronisation is not effected 
by propagation or local interference and there is no late 
entry synchronisation delay.
Supply voltage 12 V to 28 V DC operation

154
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Selcall system Based on CCIR 493-4, four and six digit systems. 
Protocol available for free distribution. Fully compatible 
with other major HF manufacturers’ four and six digit 
systems including encrypted systems
ALE Standards 2G and 3G ALE
Current  
consumption
350 mA standby (muted)
Channel capacity Up to 1000 programmable channels (depending on the 
4050 variant (simplex or semi-duplex)
Switching speed Less than 15 ms Tx to Rx, Rx to Tx
Weight NJORFDOFRQWUROFRQÀJXUDWLRQ
Width 188 mm
Depth PPORFDOFRQWUROFRQÀJXUDWLRQ
Height 83 mm
Receiver
Sensitivity -121 dBm (0.20 μV) Pre amp off for 10dB SINAD
Selectivity J3E -1 kHz and +4 kHz better than 70dB
-2 kHz and +5 kHz better than 70dB
-5 kHz and +8 kHz better than 70dB
Selectivity J2B 
(optional)
-500 Hz and +500 Hz better than 60 dB The level of an un-
wanted signal above the level of a wanted signal that will 
reduce the SINAD of the wanted signal from 20 dB SINAD 
to 14 dB SINAD
Blocking -20 kHz and +20 kHz better than 71 dB. The level of an 
unwanted signal above the level of a wanted signal that 
will reduce the SINAD of the wanted signal from by 6 dB 
or cause and output level change of 3 dB
Intermodulation Better than 89 dBμV - The level of two unwanted signals, 
that are within 30 kHz of the wanted signal, above the 
level of a wanted signal that reduces the SINAD of the 
wanted signal to 20 dB
Spurious  
response ratio
Better than 70 dB

155
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Reciprocal 
mixing
Better than 105 dBμV
In-band IMD Better than 34 dB
Audio output 4 W into 4 ohm at less than 2% distortion
Audio response Less than 6 dB variation from  
350 Hz to 2700 Hz
Transmitter
RF output power 150 W PEP Voice (with 24 V supply)
125 W PEP Voice (with 13.8 V supply)
Duty cycle 100% data with fan option
Intermodulation 
Products
Better than -31 dB below PEP  
(25 dB below two tone peak)
Audio frequency 
response
Less than 6 dB variation 350 Hz to 2700 Hz
Current  
consumption
Voice average less than 9 amps typical 
Two tone less than 12 amps typical
Standby Max 0.5 A
13.8 V DC - Max 21 A (full power 125 W)
24 V DC - Max 15 A (full power 150 W) 

156
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Installation
This section describes how to change the 4050 Transceiver from a desktop unit 
to a remote control (trunk mount) unit using the Mobile Pack P/N BCA40501.
Mobile Pack 
(P/N BCA40501)
The mobile pack contains the following components:
Item Description Barrett P/N
Barrett installation kit BCA40004
1
Universal mounting cradle SA-45060
2
Screws and capstans MW-45027

157
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Item Description Barrett P/N
3RAM mount PW-33334
4
Six metre control head cable 
with DE-15 connectors SA-45100
To install the mobile pack, complete the following steps:
1.  Invert the SDR and use a  
Posidrive #2 screwdriver to 
loosen (but not remove), the 
two front panel securing screws 
located immediately behind the 
front panel.
2.  Gently pull the front panel from 
the SDR to remove it.
3.  Fit the supplied capstans to the 
four holes as indicated.

158
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
4.  Attach the universal mounting cradle   to the desired location using the 
À[LQJVSURYLGHG
5.  Align the SDR’s capstans into the key holes on the universal mounting cra-
dle and slide to secure it.
6.  Attach the RAM mount  WRWKHGHVLUHGORFDWLRQDQGDIÀ[WKHIURQW
panel to it using the two screws provided.
7.  Plug the six metre control head cable   into the socket located at the 
front of the SDR and secure using the strain relief screws.
8.  Remove the two plug retaining screws   from their storage location as 
LQGLFDWHGDQGÀWVHFXUHO\LQSRVLWLRQDERYHDQGEHORZWKHFRQWUROKHDG
connector. 
CAUTION: Do not over tighten.
9.  Plug the other end of the six metre control head cable into the rear of the 
front panel   and secure using the strain relief screws. 
10.  Plug the loudspeaker connector into the socket located at the rear of the 
front panel   as indicated below.
1
5
2
3
4
6
7

159
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
SDR
SDR Front Panel (Control Head)
Universal mounting cradle
RAM mount
Loudspeaker
Six metre control head cable with DE-15 connectors 
'HWDLOVIRUÀWWLQJWKHWZRSOXJUHWDLQLQJVFUHZV
Land Based Systems
This section provides instructions for the installation of land based HF commu-
nication equipment. 
Most of the installation work can be performed by non-technical personnel if 
they carefully follow the instructions given in this manual. However, it is rec-
RPPHQGHGWKDWWKHFRPSOHWHGLQVWDOODWLRQEHFKHFNHGE\DVXLWDEO\TXDOLÀHG
WHFKQLFLDQ,QVRPHHTXLSPHQWFRQÀJXUDWLRQVWHFKQLFDODGMXVWPHQWLVUHTXLUHG
for the equipment to operate correctly.
1RWH6RPHHTXLSPHQWKDVVSHFLÀFLQVWUXFWLRQVVXSSOLHGZLWKLW7KRVHLQVWUXFWLRQV
over-ride the general guidance of this manual, and must be followed in detail.
8QSDFNLQJDQG,QVSHFWLRQ
When unpacking the Transceiver, check the contents against the packing note 
provided. Before discarding the carton, check that all accessories have been 
removed and are not mislaid in the packing material. Inspect the equipment for 
any transit damage. If damage has occurred, notify your supplier immediately. 
Failure to do this could affect the warranty covering the equipment.

160
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Fixed Station Installations 
Site Selection Recommendations 
The success of every HF Radio system is primarily measured by its ability to 
UHFHLYHZHDNVLJQDOVDQGWRWUDQVPLW5)SRZHUHIÀFLHQWO\$QXPEHURILPSRU-
tant factors need to be considered to achieve success. These include: frequency 
selection, time of day and ambient noise at the receiver site. Frequency and 
time of day are factors which can be used to calculate the maximum usable fre-
quency (MUF) and lowest usable frequency (LUF), for a particular time of day, 
using prediction software freely available on the internet. A typical example of 
this is VOACAP, http://www.voacap.com/prediction.html 
Site selection and system design go hand in hand and should be considered 
before any equipment is purchased. Forcing the radio system into an unsuita-
ble site will undoubtedly result in disappointing if not unworkable performance 
of the system. Little can be done to improve an installed system if, for example, 
the ambient RF noise is unacceptably high.
It is recommended that site evaluation be done before any system designs are 
ÀQDOLVHGWRDYRLGV\VWHPSHUIRUPDQFHGLVDSSRLQWPHQW
The following should be considered when choosing a position for the Trans-
ceiver:
Operating 
Convenience
The Transceiver should be placed so that the operator is com-
fortable and any required facilities are easily accessible. 
Air Circulation 0RVW7UDQVFHLYHUVUHO\RQDLUÁRZDURXQGFRROLQJÀQVWR
dissipate heat generated by the transmitter. The mounting 
SRVLWLRQPXVWDOORZIUHHDLUÁRZDURXQGWKHVHÀQV
Proximity of 
Transceiver to 
Antenna
When using RG-58 coaxial cable from the Transceiver to the 
antenna, a cable length of no more than 30 metres is recom-
mended. Should a run of more than 30 metres be required, it 
is recommended that a low loss coax such as RG-213 or RG-8 
be used.
It is recommended that the Transceiver chassis is connected 
to ground using the bolt on the rear panel to stop pick-up 
of unwanted noise from local power supplies and electrical 
equipment.

161
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Power Supply 
When 12 V DC is supplied to the 4050 Transceiver, the PEP Voice output power 
will be restricted to 125 W. Conversely, when 24 V DC is supplied to the 4050 
Transceiver, the PEP Voice output power will achieve 150 W. 
Power output regulation is done automatically based on the DC voltage pre-
sented to the Transceiver DC input connector. The Barrett 4022 Power Supply is 
available in two versions, the BC402200 (12 V DC) and the BC402201 (24 V DC) 
version. Each power supply version is capable of operation with AC mains input 
voltage between 88 and 256 V AC.
In base station installations where no mains supply is available, various Barrett 
VRODUSRZHUVXSSO\YHUVLRQVDUHDYDLODEOHGHSHQGLQJRQWKHV\VWHPFRQÀJXUD-
tion requirement.
1RWH6RPHLQVWDOODWLRQVXVHDQ$&EDWWHU\FKDUJHUWRÁRDWFKDUJHWKHVXSSO\
EDWWHU\%DWWHU\FKDUJHUVFDQSURGXFHHOHFWULFDOQRLVHIURPWKHUHFWLÀHUGLRGHV
This noise causes a static type of interference in the receiver. It may be necessary, 
WKHUHIRUHWRVZLWFKRIIWKHEDWWHU\FKDUJHUZKLOVWWKH7UDQVFHLYHULVLQXVH,IÁRDW
charging of batteries is required for installations with unreliable AC power supply, 
it is recommended that a Barrett BC402200 or BC402201 be used as each pro-
vides a three stage charge facility to maintain a battery without the noise problem 
described above. 
Voltage Drop 
The average current consumption of the Transceiver is low but during transmis-
sion of voice peaks, high current is needed for short intervals. This means that 
the power supply cable must be heavy enough to supply these short duration 
current peaks without excessive voltage drop. Preferably, only use the power 
cable supplied with the Transceiver. If extra cable is required, use a cable with a 
conductor square area of no less than 8 mm2. Unwanted voltage drop will also 
occur if incorrect wiring techniques such as poor choice of connection points 
and incorrect use of terminal lugs are used.
Protection Fuse 
The Transceiver is provided with adequate internal protection. However, the 
ÀWWLQJRIDQH[WHUQDOIXVHLVFRQVLGHUHGQHFHVVDU\QRWRQO\IRUSURWHFWLRQRIWKH
7UDQVFHLYHULWVHOIEXWWRHQVXUHWKDWLQWKHHYHQWRIGDPDJHWRWKHFDEOHDÀUH
risk does not exist. The fuse used must be installed in the active wire as close as 
possible to the battery, and must be of a type which has a low voltage drop at 
the peak currents expected.

162
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Note: In-line 3AG glass fuses are not suitable. An ATC automotive blade type fuse 
rated at 25 A with a suitable high current ATC fuse holder rated at 30 A or more 
should be used. These type of fuses and holders are contained in our standard 
installation kit (Barrett P/N BCA40004) or are available individually (Barrett P/N 
BCA20021). 
Antenna 
The antenna is a most critical part of the complete radio installation. It must 
accept the output power from the transmitter, radiate that power with 
minimum loss and in the receive mode, accept weak signals for input to the 
receiver.
Incorrect antenna installations will yield poor system performance and are 
often the cause of complaints of poor Transceiver performance.
$UDQJHRIDQWHQQDVLVDYDLODEOHIURP%DUUHWWWRVXLWPRVWVPDOOÀ[HGVWDWLRQV
Detailed instructions are included with each antenna.
912 Single Wire Broadband Dipoles
(Barrett P/N BC91201)
Barrett 912 single wire broadband dipoles are ideal for base stations that 
require operation on multiple frequencies throughout the HF spectrum using a 
single antenna.
7KHDQWHQQDFDQEHPRXQWHGHLWKHULQDKRUL]RQWDORULQYHUWHG¶9·FRQÀJX-
UDWLRQDVLOOXVWUDWHGLQWKHIROORZLQJGLDJUDPV,QWKHKRUL]RQWDOFRQÀJXUDWLRQ
the major radiation direction is broadside to the antenna. When mounted in 
WKHLQYHUWHG¶9·FRQÀJXUDWLRQWKHDQWHQQDEHFRPHVIDLUO\2PQLGLUHFWLRQDO
,QWKHKRUL]RQWDOFRQÀJXUDWLRQWKHPLQLPXPGLVWDQFHEHWZHHQWKHPDVWVLV
49 metres and the recommended mast height is 15 metres. In the inverted ‘V’ 
FRQÀJXUDWLRQWKHUHFRPPHQGHGPDVWKHLJKWLVPHWUHV

163
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
At this height, the two metre stub masts are each installed at a minimum of 19 
metres from the mast base. In locations with limited space, the antenna can 
be mounted with the ends past the load resistors drooped down towards the 
ground. White nylon supports located just past the load resistors are provided 
WRDWWDFKKDO\DUGVIRUWKLVFRQÀJXUDWLRQ,QWKLVFRQÀJXUDWLRQWKHPLQLPXP
distance between masts is reduced to 33 metres. Support towers may be either 
lattice masts as illustrated, tubular telomasts or other support structures that 
may be available locally. It is recommended that the halyards used to support 
the antenna be either UV stabilised Dacron cord or wire rope and that pulleys 
should be of stainless steel construction. 
,QVWDOOWKHDQWHQQDDVLOOXVWUDWHGLQWKHGLDJUDPVLQWKHLQYHUWHG¶9·FRQÀJXUD-
tion the eye on the top of the balun is used to attach the support halyard. 

164
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
As with all antenna installations ensure the antenna is as far from sources of 
electrical interference as possible and in a position that makes it impossible for 
the antenna to come in contact with high voltage overhead mains wiring.

165
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
912 Multi wire Broadband Dipoles
(Barrett P/N BC91200, BC91202 and BC91203)
Barrett 912 broadband dipoles are ideal for base stations that require oper-
ation on multiple frequencies throughout the HF spectrum using a single 
antenna.
The Barrett 912 antenna can be mounted either in a horizontal or inverted 
¶9·FRQÀJXUDWLRQDVLOOXVWUDWHGLQWKHIROORZLQJGLDJUDPV,QWKHKRUL]RQWDO
FRQÀJXUDWLRQWKHPDMRUUDGLDWLRQGLUHFWLRQLVEURDGVLGHWRWKHDQWHQQD:KHQ
PRXQWHGLQWKHLQYHUWHG¶9·FRQÀJXUDWLRQWKHDQWHQQDEHFRPHVIDLUO\RPQLGL-
UHFWLRQDO,QWKHKRUL]RQWDOFRQÀJXUDWLRQWKHPLQLPXPGLVWDQFHEHWZHHQWKH
masts is 32 metres and the recommended mast height is 15 metres. In the 
LQYHUWHG¶9·FRQÀJXUDWLRQWKHUHFRPPHQGHGPDVWKHLJKWLVPHWUHVDQG
at this height the 2 metre stub masts are each installed at a minimum of 19 
PHWUHVIURPWKHPDVWEDVH,QWKLVFRQÀJXUDWLRQWKHPDVWPXVWKDYHDQRIIVHW
or out-rigger bracket, at least 0.8 metres long, to hold the antenna away from 
the mast. Support towers may be either lattice masts as illustrated, tubular 
telomasts or other support structures that may be available locally. It is recom-
mended that the halyards used to support the antenna be either UV stabilised 
Dacron cord or wire rope and that pulleys should be of stainless steel construc-
tion. 

166
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
,QVWDOOWKHDQWHQQDDVLOOXVWUDWHGLQWKHGLDJUDPVLQWKHLQYHUWHG¶9·FRQÀJXUD-
tion the eye on the top of the balun is used to attach the support halyard. In 
WKHKRUL]RQWDOFRQÀJXUDWLRQWKHEDOXQKDQJVEHORZWKHDQWHQQD
As with all antenna installations ensure the antenna is as far from sources of 
electrical interference as possible and in a position that makes it impossible for 
the antenna to come in contact with high voltage overhead mains wiring.

167
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
913 Series Helical Dipoles
(Barrett P/N BC91301 to BC91305)
913 series helical dipole antennas are compact and easily installed, having 
extremely narrow bandwidth characteristics and a performance approaching 
that of a wire dipole when used at frequencies over 4.5 MHz. The helical dipole 
DQWHQQDLVIHGE\DVLQJOHFRD[LDOIHHGHUDQGFDQDFFRPPRGDWHXSWRÀYH
frequencies. 
The 913 helical dipole requires a 50 mm diameter mounting pole. This pole 
VKRXOGEHORQJHQRXJKWRSODFHWKHKHOLFDOGLSROHDWOHDVWÀYHPHWUHVDERYH
any obstruction. Alternatively, the helical dipole can be mounted on top of a 
mast or tower. Make sure that the site selected for the antenna is as far from 
any source of electrical interference as possible and that under no circum-
stances can come in contact with high tension power lines.
After mounting the helical dipole hub on the mounting pole, remove the front 
circular cover, pass the coaxial cable through the hole at the bottom of the 
hub. Screw the UHF connector into the balun. Now screw the helical dipole 
elements onto the hub. Each element has its frequency marked on the brass 
ferrule used to screw the element onto the hub. Assemble the helical dipole 
elements in the positions on the hub as indicated by the diagram enclosed in 
the hub. Failure to assemble the helical dipole as indicated in this diagram will 
cause tuning problems.

168
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Hub Detail
+HOLFDOGLSROHVDUHPDQXIDFWXUHGWRVSHFLÀFIUHTXHQFLHVEXWPD\UHTXLUHÀQH
tuning after installation. To enable this, the dipole elements have an adjustable 
OHQJWKWLSWRDOORZÀQHWXQLQJIRURSWLPXP96:5GXULQJLQVWDOODWLRQ,QVWDOO
WKHDQWHQQDLQLWVÀQDOSRVLWLRQDQGFKHFNWKH96:5RQHDFKRIWKHIUHTXHQ-
cies that the antenna was manufactured for. Should the VSWR be greater than 
1.5:1 the antenna will require adjustment. If a tunable transmitter is available, 
determine on each frequency the helical dipole was manufactured for, at what 
frequency the best VSWR is obtained. If this occurs at a frequency below the 
required frequency then the tips will have to be shortened on the pair of ele-
ments corresponding to that frequency. If the best VSWR occurs on a frequency 
higher than the required frequency then the tips will have to be lengthened. 
Adjust both ends by an equal amount and repeat the above sequence until 
an optimum VSWR is obtained. If a tunable transmitter is not available, use a 
method of trial and error to adjust the length of the tips, a little at a time, until 
an optimum VSWR is obtained. Remember always adjust each pair of elements 
by the same amount at each adjustment. 

169
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
915 Wire Dipole
(Barrett P/N BC91500)
Single frequency wire dipole antennas, spot-tuned to the required operating 
IUHTXHQF\VDUHWKHPRVWHIÀFLHQWDQWHQQDVIRUXVHLQ+)EDVHVWDWLRQV7KH\
are simple to install and have a relatively narrow bandwidth.
Dipole antennas should be mounted at least ½ wavelength from the ground. 
Dipoles may be mounted either between two towers or in an inverted “V” 
FRQÀJXUDWLRQUHTXLUHVRQO\RQHPDVW$VDJXLGHZKHQLQVWDOOLQJWKHPDVWV
the length between insulators of a half wave wire dipole is 142/(frequency of 
dipole in MHz) metres. To this an allowance should be made for extra insulators 
and halyards. 
For example, a 3.7 MHz dipole - length between the insulators = 142/3.7 
=38.38 metres.
:LUHGLSROHVVXSSOLHGE\%DUUHWWDUHSUHFXWWRDVSHFLÀHGIUHTXHQF\EXWKDYH
DGMXVWDEOHHQGV7KHVHDGMXVWDEOHHQGVDOORZÀQHWXQLQJIRURSWLPXP96:5
GXULQJLQVWDOODWLRQ7RÀQHWXQHDGLSROHLQVWDOOWKHDQWHQQDLQLWVÀQDOSRVL-
tion and check the antenna VSWR. Should the VSWR be greater than 5:1 the 
antenna will require adjustment.

170
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
If a tunable transmitter is available, determine at what frequency the best 
VSWR is obtained. If this occurs at a frequency below the required frequency 
the dipole is too long, if it occurs on a frequency higher than the required 
frequency then the dipole is too short. Drop the dipole and adjust both ends 
by an equal amount and repeat the above sequence until an optimum VSWR 
is obtained. If a tunable transmitter is not available, use a method of trial and 
error shortening or lengthening the dipole ends, a little at a time, until opti-
mum VSWR is obtained. Remember to always adjust each end by the same 
amount as the other every time.

171
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
4017 Automatic Tuning Horizontal Dipole Antenna
The Barrett 4017 Automatic tuning horizontal dipole is designed for base 
station applications where space is at a premium but high performance is still 
required.
Mounting on a standard 50 mm pole, the Barrett Automatic tuning horizon-
tal dipole can be mounted as close as 6 metres from the ground making it 
extremely easy to install. With a packed length of only 2.1 metres the antenna 
can be easily transported by air.
The tuner has a memory system that stores tuning information for each chan-
nel after an initial tune sequence with unlimited capacity.
$VVHPEO\À[WXUHVDUHVXSSOLHGWRDVVLVWLQPRXQWLQJWKHDQWHQQDWRDQH[LVWLQJ
mast, tower or pole. Alternatively, a range of suitable masts can be supplied 
with the antenna.
The Barrett 4017 is supplied standard with a 30 metre composite control, RF 
cable and connectors to interface with Barrett 2050 transceivers.

172
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Connection Details for a 4050 Transceiver and 4017 Automatic Tun-
ing Horizontal Dipole Antenna
+
_
+12 V DC
2
1
9
4
5
10
3
7
8
6
Barrett 4017 Automatic Tuning Horizontal Dipole Antenna
Horizontal Dipoles and Mounting Assembly
Microphone
6 metre power cable supplied with Transceiver
Fuse in-line with spare

173
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
4050 Transceiver
Extension speaker supplied with Transceiver (P/N BCA40015)
External GPS Receiver option (P/N BCA40009)
Auxiliary connector
Coaxial / Control Cable (P/N 4017-01-01)
911 Automatic Antenna Tuner for Base Station Installations 
Antenna
9DULRXVDQWHQQDFRQÀJXUDWLRQVVXFKDVYHUWLFDOZKLSVORQJZLUHVDQGORRSV
can be used for base station installations, using the Barrett 911 automatic 
antenna tuner. However, the following points should be considered:
The antenna should be mounted as far away as possible from buildings, trees, 
vegetation and sources of electrical interference. If metallic masts or supports 
are used, arrange insulators to ensure the antenna is spaced at least two 
metres from the mast. Remember the radiating part of the antenna starts at 
the tuner. The location of the bottom portion of the antenna is very important.
Horizontal wire antennas have maximum radiation broadside to the antenna 
when the frequency is less than ¼ wavelength. Radiation is at a minimum at 
the end points of the antenna. Inverted “V” installation of horizontal antennas 
minimises the directivity and is recommended for omni-directional coverage.
High voltages are present on the antenna system. The antenna tuner and 
antenna should be located or protected so that there is no possibility of acci-
dental contact.
Transceiver and Tuner Mounting
The Transceiver should be mounted in a suitable position allowing easy 
operator access. The antenna tuner should be mounted, preferably out of the 
weather, and as close to the ground (earth) point as possible. The interconnect 
cable supplied with the antenna tuner should be routed, away from other 
cables, back to the Transceiver and connected as indicated in the diagram. The 
maximum interconnect cable should be less than 25 metres.

174
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Ground (Earth) System
The ground (earth) system is a key part of the overall antenna system and con-
sequently the system operation. An inadequate ground system is the primary 
cause of poor performance and tuning problems. There is little point in install-
ing the antenna unless a good ground system can be provided. In areas of 
good ground conductivity (i.e. ground always damp), an effective ground can 
be made through a grounding rod. This should be approximately three metres 
in length and should be installed as close to the tuner as possible. Several rods 
bonded together will improve the ground contact. In some cases metal water 
pipes may be used as a ground providing:
• The water pipe is close to the tuner and the water pipe enters the ground
close to the tuner.
• There are no joints or couplings in the pipe that will increase the resist-
ance  path to ground.
• The water pipe enters soil with good conductivity.
• A low resistance joint is made with the water pipe.
)UHTXHQWO\WKHJURXQGFRQGXFWLYLW\ZLOOQRWEHVXIÀFLHQWWRSURYLGHDVDWLVIDF-
tory ground for the Barrett 911 tuner. This will almost certainly be the case in 
well drained sandy soils or on rock. In these cases, a counterpoise must be used 
as a ground system. This will also be the case in rooftop installations where no 
H[LVWLQJJURXQGSODWHVXFKDVPHWDOURRÀQJH[LVWV
The number of radials required for an effective counterpoise depends on the 
soil quality, dampness and other factors which affect the conductivity of the 
soil. The more radials used, the better will be the performance of the antenna 
/ ATU combination especially at lower frequencies. This manual suggests a 
minimum of 20 radials, but optimum performance at low frequencies is not 
guaranteed.
The radials of the counterpoise need only be of much thinner cable i.e. 
5.48mm2 (#1 #2 SWG) preferably copper wire. RG58 Coaxial cable may be 
used. At the base of the antenna, the radials all couple together at a common 
well bonded antenna ground point. The radials should be buried into the 
ground to a minimum of 200 mm depth.
Note: To accomplish reliable ATU tunes at frequencies below 5 MHz, it is not 
uncommon, with poor conductive soil conditions, to require up to 120 radials each 
of up to 70 m length, requiring thousands of metres of cable and a lot of trenching.  
This is impractical and is the reason we do NOT recommend Whip / ATU antenna 
for land based systems.

175
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Electrical Checkout
After mechanical installation is complete, select the highest frequency to be 
used on the Transceiver. A directional watt-meter such as a Bird model 43 may 
be inserted in the coaxial transmission line between the Transceiver and the 
tuner, although the internal metering of the Barrett 4050 Transceiver is ade-
quate. The tune mode on the Transceiver is then energised. Upon application 
of RF energy, the tuner should start to tune, indicated by the ‘clattering’ of 
the tuner relays. After a few seconds the relay noise will cease, the Transceiver 
should indicate a successful tune and the watt-meter, and front panel indica-
WLRQRIWKHVKRXOGVKRZDORZYDOXHUHÁHFWHGSRZHUFRQVLVWHQWZLWKD
VSWR of better than 2:1. Now select the lowest desired frequency on the Trans-
ceiver and repeat the above procedure. The result should be the same, except 
that the tune cycle may take somewhat longer. If the above procedure does not 
give the results indicated, check that the antenna length and connections are 
correct and re-check all ground (earth) connections.
Note: When received, the Barrett 911 automatic antenna tuner memory system will 
usually not have any pre-stored tuning information appropriate to your installation. 
To allow the 911 to ‘learn’ its tuning information, simply proceed from one channel 
to the next allowing the normal tune cycle to take place. Each successful tune is 
‘memorised’ so that when that channel is re-selected the tuner will almost instanta-
neously retune to that frequency.

176
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Connection Details for a 4050 Transceiver and 911 Automatic 
$QWHQQD7XQHULQD%DVH6WDWLRQ&RQÀJXUDWLRQ
+
_
+12 V DC
1
6
4
5
10
7
8
9
2
3
7
Barrett 4011 automatic antenna tuner
Antenna
Microphone
6 metre power cable supplied with Transceiver
Fuse in-line with spare

177
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
4050 Transceiver
Extension speaker supplied with Transceiver (P/N BCA40015)
External GPS Receiver option (P/N BCA40009)
Auxiliary connector
Coaxial / Control Cable Extension (P/N BCA90055)
4011 Automatic Antenna Tuner for Base Station Installations
The Barrett 4011 automatic antenna tuner is designed for operation in both 
marine mobile and land base station installations.
Housed in a fully weatherproof enclosure the 4011 will tune long wire anten-
nas effectively up to a length of 10 metres and wire loop antennas or whip 
antennas over a frequency range of 2 to 30 MHz. Tuning is rapid, typically less 
WKDQRQHVHFRQGWKHÀUVWWLPH5)LVDSSOLHGHLWKHUZKLOVWWKHRSHUDWRULVWDONLQJ
or when the “Tune” control is activated on the Transceiver.
7KHWXQHUIHDWXUHVDPHPRU\IDFLOLW\WKDWVWRUHVWKHFRQÀJXUDWLRQ
required to tune to a frequency. On any subsequent use of that frequency, the 
UHFRQÀJXUHVWRWKHVWRUHGVHWWLQJVLQW\SLFDOO\OHVVWKDQPLOOLVHFRQGV
)ROORZLQJLQLWLDOWXQLQJWKHDQWHQQDV96:5LVPRQLWRUHG,IDQ\VLJQLÀFDQW
variation occurs, the 4011 will re-tune the antenna automatically.
The 4011 is supplied complete with coaxial / control cable having an overall 
length of 30 metres (P/N 4017-01-01). The cable is a composite design incorpo-
rating coaxial, power supply and control cables.

178
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Connection Details for a 4050 Transceiver and 4011 Automatic 
$QWHQQD7XQHULQD%DVH6WDWLRQ&RQÀJXUDWLRQ
+
_
+12 V DC
1
6
4
510
7
7
8
9
2
3
Barrett 4011 automatic antenna tuner
Antenna
Microphone
6 metre power cable supplied with Transceiver
Fuse in-line with spare

179
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
4050 Transceiver
Extension speaker supplied with Transceiver (P/N BCA40015)
External GPS Receiver option (P/N BCA40009)
Auxiliary connector
Coaxial / Control Cable Extension (P/N 4017-01-01)

180
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Mobile Installations
Site Selection Recommendations
The following points must be considered when mounting the Transceiver.
Safety It is essential that the Transceiver be mounted in a place where 
it cannot cause injury to the occupants of the vehicle in the 
event of a motor vehicle accident.
For this reason overhead mounting is not generally recom-
mended and “under dash” mounting must take into account 
the possibility of injuring the legs of front seat occupants.
Convenience The chosen position for the Transceiver or control head, (if a 
remote controlled model is used) should be one which allows 
convenient operation.
Positions which are often used are:
•  On the transmission hump
•  In place of the glove box
•  Behind the seat
•  Under the dash board (if safe).
Where a remote controlled Transceiver is used, only the control 
head need be mounted convenient to the operator. The Trans-
ceiver may be mounted under a seat, in the luggage com-
partment or any other out of the way place within the vehicle 
ZKLFKDOORZVIRUVXIÀFLHQWFRROLQJ
All equipment should be positioned in such a way that conve-
nient access for maintenance is provided.
Strength It must be assumed that the vehicle will be used on rough 
roads and in many cases off road. Hence mounting of equip-
ment must take into account the severe vibration and shock 
that can be expected.
Transceivers may only be mounted to structural components 
of the vehicle body and not on dress panels or plastic interior 
panels. In some cases, the area around the Transceiver mount-
ing may need reinforcement.
3UHFDXWLRQVVKRXOGEHWDNHQWRHQVXUHÀ[LQJVFUHZVHWFFDQQRW
vibrate loose.

181
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Air  
Circulation
0RVW7UDQVFHLYHUVUHO\RQDLUÁRZDURXQGFRROLQJÀQVWRGLVVL-
pate heat generated by the transmitter. The mounting position 
PXVWDOORZIUHHDLUÁRZDURXQGWKHVHÀQV
Obstruction The installation of a Transceiver into a vehicle should not inhibit 
WKHQRUPDOXVHRIWKHYHKLFOH%HIRUHÀQDOO\VHOHFWLQJHTXLS-
ment positions, check that normal operation of steering, foot 
pedals, gear change, hand brake etc. are not impeded, and that 
heater or air-conditioning outlets, glove box and doors are not 
obstructed. Always check that the drilling of mounting screw 
holes will not damage electrical wiring, heater hoses or hydrau-
lic lines.
Power Wiring 
Connect the red positive and black negative wires from the Transceiver power 
cable to the positive and negative terminal of the battery. Do not connect to 
the ignition switch or internal fuse panels as vehicle wiring to these points is of 
LQVXIÀFLHQWFXUUHQWFDSDFLW\FDXVLQJYROWDJHGURSDQGSRVVLEOHQRLVHLQWHUIHU-
ence.
•  Route the power cable away from high tension ignition wiring. 
•  Secure the power cable, either to other wiring or the vehicle body, with  
suitable cable ties.
•  Where wiring passes through bulkheads, provide appropriate protection 
to prevent insulation being damaged.
•  ,IDQLVRODWLRQVZLWFKLVÀWWHGEHWZHHQWKHEDWWHU\·VQHJDWLYHWHUPLQDODQG
the vehicle chassis then it is important to connect the radio’s negative 
supply cable to the chassis side of the isolation switch.
Earthing
Ideally the radio should be mounted as close as possible to the antenna with 
a common earthing point being used for both the antenna’s earth connection 
and the radio’s earth connection.

182
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Antenna
In any radio system an effective antenna installation is essential. Because of the 
QHHGWRUHGXFHWKHVL]HRI+)DQWHQQDVVRWKDWWKH\FDQEHÀWWHGWRDYHKLFOH
mobile antenna bandwidth becomes quite narrow and hence tuning is critical. 
In most cases the only tuning adjustment that can be effected is adjustment to 
position. Particular attention must be given to the antenna position if satisfac-
tory performance is to be obtained. Refer to the instructions supplied with the 
antenna you have selected.
Antenna Mounting 
The antenna mounting must provide a strong secure anchorage for the base 
of the antenna. To obtain maximum radiation, the antenna base must be 
well bonded electrically to the vehicle chassis. Paint, dirt, rust, etc. should be 
UHPRYHGIURPWKHUHVSHFWLYHÀ[LQJSRLQWV7KHPRXQWLQJSRLQWPXVWSURYLGHD
low resistance electrical path to the main vehicle metallic structure.
Antenna Feed Cables 
Antenna feed cables should be run (as far as possible) away from other vehicle 
wiring and especially away from ignition high tension wiring. Where passing 
through body panels or internal bulkheads, grommets must be used to protect 
the cables. Water-proof connectors must be used when they are outside the 
vehicle.
Voltage Standing Wave Ratio (VSWR) 
After installation it is recommended that the VSWR of the antenna should be 
measured for each channel. The instructions supplied with each antenna will 
detail this operation.
Noise Suppression 
Please note that some newer fuel injected engines emit very strong EMI 
(Electromagnetic interference) noise levels across the HF radio band, which is 
near impossible to suppress. For these installations, moving the position of the 
antenna to another position on the vehicle may reduce the noise effect but full 
elimination of noise during engine running may never be achieved. Please note 
that this is not unique to the Barrett 4050 radio as all radio makes will suffer 
similarly from the effects of this noise under these conditions.

183
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Noise generated by motor or electrical accessories on the vehicle may cause 
objectionable interference to the received signal. This noise enters the receiver 
either by means of the battery leads or the antenna system. Providing that the 
recommendations concerning battery wiring given earlier in this manual are 
IROORZHGQRLVHLQMHFWHGYLDWKHEDWWHU\OHDGLVXQOLNHO\WREHVLJQLÀFDQW0RVW
noise problems result from pick-up by the antenna. Practical cures involve 
either preventing the noise from being generated or minimising it from being 
radiated by the wiring connected to the noise source.
Interference Suppression Kit 
(Barrett P/N BCA20008) is available to assist in noise suppression and contains 
ÀOWHUVVXSSUHVVLQJFDSDFLWRUVHDUWKVWUDSVDQGÀWWLQJLQVWUXFWLRQV
The techniques involved in noise suppression include re-routing of wiring, 
VFUHHQLQJDQGWKHXVHRIÀOWHUV,WLVDOVRQHFHVVDU\WRPDLQWDLQDOOHOHFWULFDO
equipment in good working order as worn brushes, loose connections and the 
like, will increase the amount of noise generated.
Before attempting to cure a noise problem, the source (or sources) of noise 
PXVWEHLGHQWLÀHG,GHDOO\WKHUHVKRXOGEHQRGLIIHUHQFHEHWZHHQEDFNJURXQG
noise in the receiver with motor and accessories on and that with motor and 
accessories off.  
If a detectable difference does exist, turn off all accessories one by one until 
a change in noise results. Continue, noting each contributing unit until there 
is no detectable difference from the “all off” noise level. (For accessories such 
as alternator, motors, instruments etc. a wire or drive belt may have to be 
temporarily removed for this assessment.) After identifying each noise source, 
they can be worked on one at a time until an acceptable level of suppression is 
achieved.
Another approach to this problem is to remove or disconnect all possible 
sources of noise then replace and suppress them in turn.
Some suggestions for suppressing particular noise sources follow:

184
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Ignition Systems All high tension wiring from the ignition coil through to 
the spark plugs should be kept as short as practicable, 
clean, and as close to the engine block as possible. The 
cable should be an impregnated neoprene resistive type 
and the coil must be either mounted on, or immediately 
adjacent to, the engine block. The low tension wire from 
the coil to the distributor contact breaker points must be 
as short as possible, and not included with other wires in 
a harness or loom. This wire must be shielded if more than 
PPORQJ7ZLQÁH[RU¶ÀJXUHHLJKW·FDEOHSURYLGHVD
suitable shield when connected in lieu of the original wire. 
This method is useful for shielding other wires suspected 
of radiating noise. Do not ignore the wire to an electric 
WDFKRPHWHULIRQHLVÀWWHG
Coil to Battery 
Wiring
$ORZSDVVÀOWHUVXFKDVWKDWVXSSOLHGLQWKHLQWHUIHUHQFH
VXSSUHVVLRQNLWRUVLPLODUVKRXOGEHÀWWHGDWWKHFRLOHQGRI
WKLVZLUH7KHHDUWKFRQQHFWLRQRIWKHÀOWHUVKRXOGEHVKRUW
and well-bonded to the coil body.
Alternator / Gen-
erator to Battery 
Wiring
$ORZSDVVÀOWHUVXFKDVWKDWVXSSOLHGLQWKHLQWHUIHUHQFH
VXSSUHVVLRQNLWRUVLPLODUVKRXOGEHÀWWHGWRWKHPDLQEDW-
WHU\OHDGDWWKHDOWHUQDWRU7KHÀOWHUPXVWEHUDWHGIRUWKH
maximum current available from the charging system. The 
HDUWKOXJRIWKHÀOWHUVKRXOGEHDWWDFKHGWRWKHDOWHUQDWRU
body or the engine block.
Alternator 
to Regulator 
Control Wire 
(Generator Field 
Wire)
This wire carries switching pulses that often contribute 
QRLVHWRWKHUHFHLYHU6XSSUHVVLRQXVLQJFDSDFLWRUVRUÀOWHUV
must not be attempted since damage to the regulator 
may result. Separate the wire from all other wiring, keep 
it as short as possible and, if longer than about 300 mm it 
should be shielded as described above.
Other Regulator 
Wires
These are normally adequately suppressed using good 
low-inductance bypass capacitors. To be effective, these ca-
pacitors must connect to the wires to be suppressed and to 
chassis with very short leads. For this reason, the ‘pigtail’ 
style of suppressor capacitor often used with MF broadcast 
receivers is generally ineffective at HF.
Electric Motors 
(windscreen wip-
ers, fans etc.)
Small electric motors can usually be suppressed with good 
low inductance bypass capacitors.

185
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Engine Instru-
mentation
Certain types of oil-pressure sensors and voltage regulators 
used in instrument systems contain a vibrating or thermal 
cycling contact. These devices can only be suppressed 
by isolating and screening or wiring in the same way as 
described for the alternator to regulator control wire. Disc 
ceramic capacitors with short leads (protected with insulat-
ing sleeving) are frequently useful but to prevent damage 
to instrument contacts, where the use of bypass capacitors 
is attempted, values larger than 1 nF should not be used.
General Noise Suppression Tips
When searching for sources of noise, some of their characteristics can be help-
IXOLQLGHQWLÀFDWLRQ
•  Petrol engine ignition noise and contact breaker noise is a sharp staccato 
‘plop’ varying with engine speed. It is only with this class of noise that the 
impulse noise limiter incorporated within some Transceivers is effective.
•  Noise from other sources generally has a more ‘mushy’ sound. That from 
the alternator / generator may only be troublesome over a limited range 
RIHQJLQHVSHHGDQGFDQDOVREHLQÁXHQFHGE\WKHVWDWHRIFKDUJHRIWKH
battery.
•  The noise from instrument regulators may depend on the battery voltage, 
the reading of the instrument and the length of time the system has been 
switched on. For this reason, the search for noise sources must be done 
thoroughly to prevent noise from apparently reappearing after the instal-
lation has been completed.
•  Electric motors generate a ‘whining’ sound. Do not forget to check wind-
screen wipers, electric fuel pumps, heater and air conditioning fans and 
other motors which operate only on an intermittent basis. 

186
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
2019 Automatic Tuning Mobile HF Antenna
(Barrett P/N BC201900)
The Barrett 2019 automatic tuning mobile HF antenna plugs directly into the 
rear of a 4050 Transceiver using the cables supplied. 
Important: 4050 Transceivers must have the 2019 antenna option set during pro-
gramming.
Mounting the Barrett 2019 Automatic Tuning Mobile HF Antenna
The Barrett 2019 antenna should be mounted in positions similar to those 
illustrated in the diagrams on the following pages. Select a position free from 
excessive vibration. A bracket, fabricated to withstand the forces and vibration 
that can be expected during off-road driving, should be used to mount the 
antenna to the vehicle. When locating the mounting position for the antenna 
HQVXUHWKDWWKHDQWHQQDERG\ZKHQÁH[LQJRQLWVYLEUDWLRQPRXQWFDQQRW
come into contact with other parts of the vehicle. The antenna should be 
mounted as far from surrounding objects on the vehicle as possible. 
The antenna is supplied standard with two sections (Barrett P/N: BCA201901), 
a tapered black spring (Barrett P/N: BCA201903), an antenna installation guide 
and a pre-terminated six metre control cable to suit the Barrett 2019 antenna 
to Transceiver. A six metre (Barrett P/N: BCA201904) or ten metre (Barrett P/N: 
BCA201905) extension cable for the control cable is also available.
The control cable should be routed into either the engine compartment or boot 
(trunk) of the vehicle. If the joint between the antenna control cable and the 
extension cable is in an exposed position, a butyl rubber self amalgamating 
tape should be used to seal the joint. Do not wrap this joint if it cannot be 
made completely water tight as water will collect in the joint and cause it to 
corrode.
$JRRGHDUWKJURXQGWRWKHPDLQERG\RIWKHYHKLFOHLVHVVHQWLDO
IRUHIÀFLHQWRSHUDWLRQRIWKHDQWHQQD To achieve this clean all joints to 
bare metal and use copper braid earth straps if any non-metallic joints are 
encountered.
After mounting the main body of the antenna, screw the black base spring 
onto the antenna body followed by the whip section. 

187
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Important Information
,WLV(66(17,$/WRPDLQWDLQWKHPLQLPXPFOHDUDQFHVEHWZHHQWKH
DQWHQQDDQGVXUURXQGLQJPHWDOZRUNDVLQGLFDWHGLQWKHGLDJUDPV
)$,/85(720$,17$,17+(6(&/($5$1&(6:,//12721/<5('8&(
7+(()),&,(1&<2)7+(%$55(77$8720$7,&781,1*02%,/(+)
$17(11$%870$<$/62/($'72,17(51$/5)$5&,1*$1')$,/85(
,PSRUWDQW
Please note that the mounting of 
a 2019 antenna on the front of a 
vehicle may be considered illegal 
in some areas / countries. Please 
check with your local transport / 
vehicle authority prior to installa-
tion on the front of your vehicle.
Considerations on the overall 
height of the 2019 antenna once 
ÀWWHGVKRXOGDOVREHFRQVLGHUHG
ABSOLUTE MINIMUM CLEARANCE 
TOP VIEW
160 mm
BULL BAR

188
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
,PSRUWDQW
Please note that the mounting 
of a 2019 antenna on the front 
of a vehicle may be considered 
illegal in some areas / countries. 
Please check with your local 
transport / vehicle authority 
prior to installation on the front 
of your vehicle.
Considerations on the overall 
height of the 2019 antenna 
RQFHÀWWHGVKRXOGDOVREH
considered.
ABSOLUTE MINIMUM CLEARANCE 
TOP VIEW
ABSOLUTE MINIMUM CLEARANCE 
TOP VIEW
BONNET
REAR OF VEHICLE
160 mm
160 mm
160 mm
BULL BAR
Caution:- Whilst the 2019 automatic tuning mobile HF antenna is designed to with-
VWDQGYLEUDWLRQWRPLOLWDU\VSHFLÀFDWLRQVRQW\UHGYHKLFOHVVRPHPRXQWLQJSRVLWLRQV
on large prime-movers, particularly front mounted bull bars, are subject to vibration 
WKDWIDUH[FHHGVWKLVVSHFLÀFDWLRQ'RQRWPRXQWWKHDQWHQQDLQSRVLWLRQV
such as these as damage to the antenna may result. 

189
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Antenna Assembly
Mounting the Base Spring
The base spring should only ever be hand tightened, if a tool is used it may 
damage the spring base.
Mounting the Whip Sections
To mount the whip 
section it is recom-
mended that only one 
section of the whip 
is screwed onto the 
antenna at a time. The 
whip section should be 
hand tightened fully 
then a suitable tool (i.e. 
a spanner) can be used 
to tighten the section a 
further 10 to 20 degrees 
clockwise while holding 
the antenna body with a 
free hand.

190
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
To mount two whip 
sections together, 
the unattached whip 
section should be hand 
tightened fully then 
a suitable tool (i.e. a 
spanner) can be used 
to tighten the section a 
further 10 to 20 degrees 
clockwise while holding 
the already screwed on 
whip section with a free 
hand.

191
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Connection Details for a 4050 Transceiver with Mobile Pack and 
2019 Automatic Tuning Mobile HF Antenna
+
_
+12 V DC
1
2
7
6
5
9
4
8
10
3
Barrett 2019 Automatic Tuning Mobile HF Antenna
4050 control head
6 m Control Cable (P/N SA 45100)
Microphone
Fuse in-line with spare

192
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
6 metre power cable supplied with Transceiver
4050 Transceiver
Extension speaker supplied with 4050 Transceiver (P/N BCA40015)
Coaxial / Control Cable Extension 
External GPS Receiver option (P/N BCA40009)
Testing the Barrett 2019 Automatic Tuning Mobile HF Antenna
7RWHVWWKH%DUUHWWDQWHQQDÀUVWVHOHFWWKHORZHVWWUDQVPLWIUHTXHQF\LQ
the Transceiver and tap Tune. The display should show the word “Tuning” for a 
IHZVHFRQGVIROORZHGEULHÁ\E\´7XQH3DVVHGµDQGDQLQGLFDWLRQRIWKHPHDV-
ured VSWR (Voltage Standing Wave Ratio) value. Check this reading against the 
VSWR meter.
Repeat the above test on the highest frequency in the Transceiver and on a 
selection of frequencies in between at approximately 2 MHz intervals. If the 
tune passes at all times, the Barrett 2019 antenna is working correctly. The 
Barrett 2019 antenna tunes to maximise whip current, not minimise VSWR, but 
the displayed VSWR value should generally be between 1.0:1 and 2.0:1. How-
ever, if the display shows “Autotune Fail” accompanied by low pitched beeps at 
DQ\SRLQWWKH%DUUHWWDQWHQQDKDVIDLOHGWRWXQH&RQÀUPWKH´$QWHQQD
Type” is selected to “2019 Mobile Ant” in the Transceiver Menu Settings > IO 
> Antenna Type setting (page 98). Check all cables are correctly connected, 
check the earth cable from the base of the Barrett 2019 antenna has a good 
FRQQHFWLRQWRWKHYHKLFOHERG\QRWFKDVVLVRUEDWWHU\FKHFNWKHZKLSÀWWHGLV
not faulty or incorrect and move the vehicle if the Barrett 2019 antenna is close 
to any metal fences, buildings etc. If the problem cannot be resolved, contact 
your dealer or Barrett Service Department for advice.

193
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
914 Series Manual Tap Whip Antenna
(Barrett P/N BC91401 to BC91424) 
Installation
914 series manual tapped whip antennas are mounted on vehicles using 
a heavy duty base and spring (Barrett P/N BCA91400). The whip should be 
mounted on the vehicle in positions such as those illustrated in the diagrams 
below. A bracket, fabricated to withstand the forces and vibration that can 
be expected during off-road driving, should be used to mount the antenna 
base and spring to the vehicle. When locating the mounting position for the 
antenna, the ring located above the label at the bottom of the whip should be 
level with the surrounding ground plane, e.g. the bonnet of the vehicle or the 
roof of the vehicle. Ensure that the mounting bolt on the base and spring is 
electrically bonded to the chassis of the vehicle via a very low resistance path, 
i.e. clean all joints to bare metal and use braid earth straps if any non-metal 
joints are encountered. Use only good quality coaxial cable and water proof 
UHF connectors (such as those supplied by Barrett Communications). 
'RQRWXVH3/8+)FRQQHFWRUV.
When running the coaxial cable from the antenna to the Transceiver, avoid 
sharp corners and heat such as that generated by the manifold of the engine. 
After installing the antenna check the antenna VSWR on each channel. Gener-
ally if the antenna has been mounted in the positions as illustrated, the VSWR 
will be less than 1.6-1 and no adjustment is necessary. If the VSWR is not lower 
than 2:1 the antenna to ground capacitance in that installation is probably 
outside of the design range of the factory set tuning. Consideration may be 
given to retuning the whip if the VSWR is so high as to cause the transmitter 
ALC system to begin to reduce power (to protect the transmitter).

194
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
For each frequency which will not tune correctly you will need to determine 
whether the tuning is high or low in frequency. Generally any frequencies 
which will not tune will always be out the same way. When the antenna is 
manufactured, most frequencies are deliberately made on the low frequency 
side and adjusted upwards by the placement of “tuning rings”. Tuning rings 
are single short circuit rings of 20 amp fuse wire placed on the windings of an 
individual part of the antenna. A tuning ring inductively raises the frequency of 
the section of antenna over which it is placed. 
It must be understood that the tuning of an antenna on a particular vehicle 
or installation may not hold for other vehicles or installations. To determine 
whether any particular frequency tap is high or low, hold the tune key down 
on the relevant frequency and observe the VSWR on a suitable meter. Get an 
assistant to slowly move his outstretched arm closer to the antenna tap in use. 
If the VSWR gets better, then the 
antenna is too high in frequency. This 
LQGLFDWHVWKDWWKHUHLVLQVXIÀFLHQW
antenna to ground capacity. Usually 
this happens when the antenna is 
mounted too far away from the body 
of a vehicle. Either re-site the antenna 
closer to the vehicle or remove any 
tuning rings which are already on the 
antenna. 
If the highest frequency on the whip 
requires adjustment, initially place 
the tuning ring here and slowly move 
upwards until a satisfactory SWR is 
obtained.
,IWKHIDFWRU\WXQLQJULQJLVQRWÀWWHG
and the highest frequency on the whip 
requires adjustment, initially place 
the tuning ring here and move slowly 
upward until a satisfactory SWR is 
obtained.
If ONLY the lowest frequency requires 
adjustment, initially place the tuning 
ring here and slowly move upwards 
until a satisfactory SWR is obtained.
If the VSWR gets worse when fol-
lowing the above procedure ,then 
too much capacity is already present. 
This is frequently encountered when 
mounting the antenna too low on a 
vehicle bumper bar or when mount-
ing close to bodywork as in cab-over 
type vehicles. In this case, either re-
site the antenna further away or add 
extra tuning rings to the frequency 
sections affected until a suitable 
VSWR is obtained.
Note: Truck cab-over installations usually produce distorted radiation patterns even 
when the VSWR looks good.
When tuning is complete, any new rings added should be coated with epoxy 
resin to secure and protect the ring from damage. Five minute quick setting 
type epoxy is suitable. If rings need to be removed they may be cut off using a 
sharp pair of side cutters. Take care not to cut into the body of the antenna.

195
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Note: If the wander lead is damaged or lost and requires replacing, the number on 
WKHÀUVWWDSLQGLFDWHVWKHOHQJWKRIWKHUHSODFHPHQWZDQGHUOHDGUHTXLUHG
Example: Wl-60 indicates the length of the wander lead was 60cm. When 
making a replacement wander lead ensure it is made to this length to obtain 
optimum performance.
Operation Instructions
The 914 manual tapped whip antenna should now be screwed into the base 
and spring mounted on the front of the vehicle.
The operation frequency being used on the Transceiver should now be selected 
on the antenna. This is accomplished with the supplied jumper lead as indi-
cated in the diagram below and the following example (Note: this is an exam-
ple only and your antenna will be manufactured with different frequency taps.)
The 914 manual tapped whip antenna used in the example has the following 
frequencies:
Channel 1 4030 kHz Channel 2 4760 kHz The illustration shows a 
10 frequency 914 manual 
tapped whip antenna 
with the highest  
frequency being selected.
Channel 3 5190 kHz Channel 4 5254 kHz
Channel 5 7180 kHz Channel 6 8199 kHz
Channel 7 9134 kHz Channel 8 9145 kHz
Channel 9 10567 kHz Channel10 14567 kHz
When using Channel 1, frequency 4030 kHz, the 
jumper lead should be removed from the bottom 
antenna socket and stored in the vehicle.
On all other channels the jumper lead is required:
For Channel 2, frequency 4760 kHz, the jumper is 
plugged into the bottom socket then wound tight-
ly around the antenna and the other end plugged 
into the socket marked 4760.
For Channel 3, frequency 5190 kHz, the jumper is 
plugged into the bottom socket then wound tight-
ly around the antenna and the other end plugged 
into the socket marked 5190.
And so on, to Channel 10.

196
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
1RWH,WLVLPSRUWDQWIRUFRUUHFWRSHUDWLRQRIWKHZKLSDQWHQQDWR
KDYHWKHULJKWIUHTXHQF\WDSVHOHFWHGDVLQGLFDWHGDERYHDQGWKDW
the jumper lead is wrapped tightly around the antenna between 
VRFNHWV
Connection Details for a 4050 Transceiver with Mobile Pack and 
914 Manual Tapped Mobile Antenna 
+
_
+12 V DC
1
2
7
6
5
9
4
8
10
3
Barrett 914 Manual tapped whip antenna
4050 control head
6 m control cable (P/N SA 45100)

197
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Microphone
Fuse in-line with spare
6 metre power cable supplied with Transceiver
4050 Transceiver
Extension speaker supplied with 4050 Transceiver (P/N BCA40015)
6 metre control cable (P/N SA 45100)
External GPS Receiver option (P/N BCA40009)
2018 Mobile Magnetic Loop Antenna
Connection Details for a 4050 Transceiver with Mobile Pack and a 
2018 Mobile Magnetic Loop Antenna
+
_
+12 V DC
1
2
3
4
5
6
7
8
9
10

198
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Mobile Magnetic Loop Antenna (P/N BC201801)
4050 Control Head
4050 Transceiver
DC Power Cable (P/N BCA40006)
Fuse in-line with spare
Control & Coaxial Cable 6m (P/N BCA201904)
Microphone (P/N MI-45001)
Loudspeaker (P/N BCA40015)
External GPS Receiver option (P/N BCA40009)
6 m Control Cable (P/N SA 45100)
Marine Installations
The Barrett 911 automatic antenna tuner is designed for use in land base 
station and maritime HF services. Primarily designed for operation with end-
fed unbalanced antennas such as whips and long wires, the tuner is built in a 
waterproof impact resistant, moulded ABS plastic enclosure. 
Antenna Selection 
The 911 automatic antenna tuner will operate into almost any end-fed antenna 
with a length exceeding 2.5 metres, providing an effective ground (earth) is 
XVHG7KHDQWHQQDHIÀFLHQF\ZLOOEHSURSRUWLRQDOWRWKHOHQJWKRIWKHDQWHQQD
and will be maximum when the length of the antenna approaches ¼ wave-
length. It is advisable to limit the wire antenna to ¼ or ¾ wavelength at the 
highest frequency to be used.

199
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Antenna 
On sailing vessels the antenna can either be an insulated backstay or a whip 
antenna mounted vertically, usually on the stern. Best performance will be 
achieved by using an insulated backstay as the radiating length will be longer 
than that available when using a whip. The top insulator on the backstay 
should be approximately 300 mm from the mast and the bottom insulator 
should be at eye level above the deck. The distance between insulators should 
be greater than 10 metres and less than 35 metres. A whip antenna is generally 
used on small to medium sized power vessels. There are different length whips 
to suit the vessel length.
Transceiver and Tuner Mounting 
Select a suitable position in the vessel to mount the Transceiver. It should be a 
position that is out of the weather and easily accessible to the operator, whilst 
as close as practical to the 13.8 V DC power source. Mount the Transceiver to a 
VROLGÀ[LQJSRLQWXVLQJWKHPRXQWLQJFUDGOH0DNHVXUHWKHUHLVVXIÀFLHQWVSDFH
at the rear of the Transceiver to connect the power and antenna cables.
The antenna tuner should be mounted as close to the antenna feed point as 
possible. In metal vessels the length of the feeder from the antenna tuner to 
the feed-through insulator, inside the vessel, should be kept less than 1 metre.
The antenna feed cable should be a suitable high voltage cable. Care should 
be taken to avoid sharp points when terminating the cable to prevent corona 
discharges.
The interconnect cable supplied with the antenna tuner should be routed away 
from other cables back to the Transceiver and connected as indicated in the 
diagram overleaf.
Ground (Earth) System 
The ground (earth) system is a key part of the overall antenna system and con-
sequently the system operation. An inadequate ground system is the primary 
cause of poor performance and tuning problems. There is little point in install-
ing the antenna unless a good ground system can be provided.
Metal hulled vessels provide an almost perfect ground. The tuner ground 
terminal should be connected directly to the hull using the shortest possible 
ground strap. The point of connection to the hull should be prepared so that it 
is free of paint and rust to ensure a good contact area with minimum electrical 
resistance.

200
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
:RRGHQRUÀEUHJODVVYHVVHOVSUHVHQWPRUHRIDSUREOHPWRJURXQG,GHDOO\WKH
YHVVHOVKRXOGEHÀWWHGZLWKDQH[WHUQDOFRSSHUJURXQGVKHHWFRQQHFWHGWRWKH
interior of the vessel by suitable stud or an earth plate (“E” plate Barrett P/N 
BCA91700)
,IWKHYHVVHOLV\HWWREHFRQVWUXFWHGWKHQLQWKHFDVHRIÀEUHJODVVYHVVHOVDWKLQ
copper sheet with an area of not less than 4 square metres should be moulded 
into the hull during lamination. A suitable heavy strap should be connected to 
the sheet and left free for earth connection.
Should neither of these methods be available it will be necessary to bond as 
many large metallic objects, such as the engine and propeller shaft, together to 
form a ground. 
Whichever method is used the ground run from the ground system to the 
antenna tuner should be as short as possible and use copper strap at least 
50 mm wide (wider if available). Consideration must always be given to the 
problem of electrolysis. Severe structural damage may occur if electrolysis is 
present. 
Corrosion 
All connections in marine situations are subject to corrosion and oxidation. 
To minimise this all joints should be cleaned and have silicon grease applied 
before assembly. Under severe conditions joints should be protected with self 
vulcanising rubber tape.
Electrical Checkout
After mechanical installation is complete, select the highest frequency to be 
used on the Transceiver. A directional watt-meter such as a Bird Model 43 
should be inserted in the coaxial transmission line between the Transceiver 
and the tuner. The tune mode on the Transceiver is then energised (refer to the 
Transceiver user manual). Upon application of RF energy, the tuner should start 
to tune, indicated by the ‘clattering’ of the tuner relays. After a few seconds 
the relay noise will cease. The Transceiver should indicate a successful tune and 
WKHZDWWPHWHUUHÁHFWHGSRZHUVKRXOGLQGLFDWHDORZYDOXHFRQVLVWHQWZLWKD
VSWR of better than 2:1. If the cover of the tuner is removed, the PCB mounted 
‘tuned’ LED should be illuminated. Now select the lowest desired frequency on 
the Transceiver and repeat the above procedure. The result should be the same, 
except that the tune cycle may take longer. If the above procedure does not 
give the results as indicated, check that the antenna length and connections 
are correct and re-check all ground (earth) connections.

201
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Note: When received, the Barrett 911 automatic antenna tuner memory system will 
usually not have any pre-stored tuning information appropriate to your installation. 
To allow the 911 to ‘learn’ its tuning information simply proceed from one channel 
to the next allowing the normal tune cycle to take place. Each successful tune is 
‘memorised’ so that when that channel is re-selected, the tuner will almost instanta-
neously retune to that frequency.
Connection Details For a 4050 Transceiver and 911 Automatic 
Antenna Tuner in a Marine Installation
+
_
+12 V DC
1
6
4
5
10
7
7
8
9
2
3
11

202
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Barrett 911 automatic antenna tuner
Antenna
Microphone
6 metre power cable supplied with Transceiver
Fuse in-line with spare
4050 Transceiver body
Extension speaker supplied with Transceiver (P/N BCA40015)
External GPS Receiver option (P/N BCA40009)
Auxiliary Connector
Coaxial / Control Cable Extension (P/N BCA90055)
Feed Through Insulator

203
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Overview of HF Operation
HF (High Frequency) is the radio spectrum with frequencies between 1.6 and 
0+]:LWKLQWKLVUDGLRVSHFWUXPDQHIÀFLHQWIRUPRIWUDQVPLWWHUPRGXOD-
tion, SSB (Single Side Band), is used. This, combined with the use of the iono-
sphere - a layer of ionisation gases that resides between 100 and 700 km above 
WKHHDUWK·VVXUIDFHSURYLGHVHIÀFLHQWFRVWHIIHFWLYHFRPPXQLFDWLRQVRYHU
short, medium and long distances - without the need for expensive re-transmis-
sion devices, such as the VHF or UHF repeaters or satellites, all of which have 
ongoing operational costs and a reliance on a physical infrastructure.
In many remote areas, HF / SSB is the only form of communication possible.
HF Propagation
When HF / SSB radio waves are generated by the Transceiver there are usually 
two components:
• The ground-wave, which travels directly from the transmitting antenna to
the receiving antenna following the contours of the earth.
• The sky-wave, which travels upward and at an angle from the antenna,
until it reaches the ionosphere (an ionised layer high above the earth’s
surface), and is then refracted back down to earth, to the receiving
antenna.
Generally speaking, ground-wave is used to communicate over shorter dis-
tances usually less than 50 km. Because ground-wave follows the contours of 
the earth, it is affected by the type of terrain it passes over. Ground wave is 
rapidly reduced in level when it passes over heavily forested areas or mountain-
ous terrain.
Sky-wave is used to communicate reliably over medium to long distances up to 
3,000 km. Whilst the nature of sky-wave propagation means it is not affected 
by the type of terrain as in ground-waves, it is affected by factors involving the 
ionosphere as described below.

204
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Radio Wave Propagation
The following illustrations show the characteristics of ground-wave and sky-
wave propagation during day and night time. In each illustration the height of 
the ionosphere above the ground is shown.
In both illustrations Station A communicates with Stations B, C and D. Propa-
gation from Station A to B is by ground-wave. The diagrams illustrate that the 
ground-wave is not affected by the time of day and the height of the iono-
sphere above the ground.
Propagation from Station A to C and D, is by sky-wave and as the diagrams 
LOOXVWUDWHWKHVN\ZDYHLVVLJQLÀFDQWO\DIIHFWHGE\WKHWLPHRIGD\DQGWKH
height of the ionosphere above the ground.
Under each diagram there are recommended working frequencies listed. Please 
note that these will vary according to time of year and other factors. They are 
intended only as a guide and are subject to change.
'D\ 1LJKW
AB
20 km 800 km 2000 km
EARTH
IONOSPHERE
CDAB
20 km 800 km 2000 km
EARTH
IONOSPHERE
CD
The sun is higher  
The ionosphere is higher  
The best frequency to use is higher.
A to B - Possible optimum working 
frequency is 3 MHz
A to C - Possible optimum working 
frequency is between 
7 - 9 MHz
A to D - Possible optimum working 
frequency is between 
13 - 16 MHz
The sun is lower 
The ionosphere is lower 
The best frequency to use is lower.
A to B - Possible optimum working 
frequency is 3 MHz
A to C - Possible optimum working 
frequency is between 
5 - 7 MHz
A to D - Possible optimum working 
frequency is between 
9 - 12 MHz

205
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Factors Which Affect HF / SSB Communications
There are a number of different factors which will affect the success of commu-
nications via HF / SSB radio. These are outlined below:
Frequency Selection
Frequency selection is perhaps the most important factor that will determine 
the success of your HF / SSB communications.
Generally speaking the greater the distance over which you want to communi-
cate, the higher the frequency you should use.
Beacon Call, a Selcall (Selective Call) function built into the Barrett Transceiver, 
PDNHVÀQGLQJWKHFRUUHFWIUHTXHQF\WRXVHHDV\$%HDFRQ&DOOLVEDVHGRQWKH
Network Transceivers all having a selection of frequencies that will accommo-
date most ionospheric conditions. When in standby, the network Transceivers 
scan these frequencies waiting for a call (Selcall or Beacon Call) from another 
Transceiver. The Transceiver wishing to check for the best frequency to operate 
on sends a Beacon Call to the station to be contacted. If the call to the other 
station is successful, a revertive tone from the station being called will be 
heard, indicating the channel selected was suitable for the ionospheric condi-
tions prevailing. If the revertive tone is not heard or is very weak, another chan-
nel may be tried until a revertive tone of satisfactory signal strength is heard.
(Refer to Beacon Calls on page 32 for more details.)
Time of Day
As a rule, the higher the sun, the higher the frequency that should be used. 
This means that you will generally use a low frequency to communicate early 
morning, late afternoon and evening, but you will use a higher frequency 
to cover the same distance during times when the sun is high in the sky (for 
example, midday). You will need to observe the above rule carefully if your 
Transceiver has a limited number of frequencies programmed into it, as you 
may only be able to communicate effectively at certain times of the day.
Weather Conditions
Certain weather conditions will also affect HF / SSB communications. Stormy 
conditions will increase the background noise as a result of static caused by 
lightning. This background noise could rise to a level that will blank out the 
signals you are trying to receive.

206
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Man-made Electrical Interference
Interference of an electrical nature can be caused by overhanging power lines, 
high power generators, air-conditioners, thermostats, refrigerators and vehicle 
engines, when in close proximity to your antenna. The result of such inter-
ference may cause a continuous or intermittent increase in the level of back-
ground noise.
6\VWHP&RQÀJXUDWLRQDQG,QVWDOODWLRQ
7KHPHWKRGLQZKLFK\RXUV\VWHPLVFRQÀJXUHGDQGLQVWDOOHGZLOODOVRDIIHFW
the success of your HF / SSB communications. Your choice of antenna system 
and power supply is critical. Correct installation is also extremely important. An 
HF / SSB Transceiver is generally installed using different rules to those used to 
install VHF or UHF Transceivers. Failure to correctly install an HF / SSB system 
will greatly affect the communications quality you will obtain. 
<RXUORFDO%DUUHWWUHSUHVHQWDWLYHZLOOEHDEOHWRDVVLVWZLWK\RXUV\VWHPFRQÀJX-
ration and / or installation.
HF Communications Compared with VHF or UHF Short 
Distance Communications
Communications on any HF / SSB Transceiver will sound different to that on 
a VHF (Very High Frequency) radio or UHF (Ultra High Frequency) radio or 
telephone. This is because of the nature of HF propagation and the modulation 
methods used. On HF / SSB Transceivers there will always be background noise 
evident behind the signal you are receiving and this will increase when there is 
electrical interference or thunderstorm activity in the area.

207
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
Compliance
Barrett 4000 series Transceivers comply to the following communications 
standards:
• Australian / New Zealand Standard
• MF and HF Radio Communications.
Equipment in the land mobile service utilising single sideband suppressed 
carrier emission:
• AS/NZS 4770:2000
• FCC Part 90.
Barrett 4000 series Transceivers comply to the following EMC standard:
• EN301 489-1 V 1.4.1 (2002-08).
Barrett 4000 series Transceivers comply to the following electrical safety 
standard:
• EN60950-1:2002.
FCC RF Exposure Compliance Statement
The Barrett 4000 Series Transceivers have beenFWBMVBUFE and comply 
with the Federal Communications Commission (FCC) RF exposure limits 
for the General Population/Uncontrolled exposure environment.
In addition, the Transceivers comply with the following standards and guide-
lines:
• FCC 96-326, Guidelines for Evaluating the Environmental Effects of
Radio-Frequency Radiation
• FCC OET Bulletin 65 Edition 01-01 (2001) Supplement C, Evaluating Com-
pliance with FCC
• Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields
• ANSI/IEEE C95.1-1992, IEEE Standard for Safety Levels with Respect to
Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300
GHz
• ANSI/IEEE C95.3-1992, IEEE Recommended Practice for the Measurement
of Potentially Hazardous Electromagnetic Fields - RF and Microwave.

208
BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
RF Exposure Warning
To ensure optimal Transceiver performance and to avoid exposure to excessive 
HOHFWURPDJQHWLF LHOGV WKH DQWHQQD V\VWHP PXVW EH LQVWDOOHG DFFRUGLQJ WR WKH
instructions provided.
High voltages exist on the antenna during transmission and tuning. Do not touch 
the antenna during these activities. RF burns may result.
Install the grounding system or counterpoise as directed to prevent RF burns from 
any metal part of the Transceiver.
For IC and FCC compliance, when the 4050 Transceiver is used at a power 
level of 10 watts PEPDQGDG%LJDLQDQWHQQD, the antenna(s) used with 
this Trans-ceiver should be located at least  metres from the operator and 
should not be co-located or operating in conjunction with any other 
antenna or transmitter.
For IC and FCC compliance, when the 4050 Transceiver is used LQD
YHKLFXODUHQYLURQPHQWat a power level of  watts PEPZLWKG%LJDLQ
DQWHQQD, the antenna(s) used with this Trans-ceiver should be located at 
least 1. metres from the operator and should not be co-located or 
operating in conjunction with any other antenna or transmitter.
7\SLFDODQWHQQDW\SHVDQGPLQLPXPVHSDUDWLRQGLVWDQFH
7KHDERYHDQWHQQDVDUHLGHQWLILHGIRUUHIHUHQFHRQO\,WLVLPSRUWDQWWKDWWKHLQVWDOOHUDQGRSHUDWRU
PDLQWDLQDPLQLPXPVDIHVHSDUDWLRQGLVWDQFHZLWKWKHDFWXDODQWHQQDXVHGLQWKHLQVWDOODWLRQDQG
WRLQVXUHLQDYHKLFXODUHQYLURQPHQWWKDWWKHWUDQVPLWWHULVRQO\XVHGZKHQSHUVRQVRXWVLGHWKH
YHKLFOHDUHDWOHDVWWKHUHFRPPHQGHGODWHUDOGLVWDQFHDZD\

5IFJNBHFCFMPXTIPXTBOFYBNQMFPGNJOJNVNSFDPNNFOEFE
TFQBSBUJPOEJTUBODFGSPNBOUFOOBJOBWFIJDVMBSFOWJSPONFOU
/PUF *GUIFNJOJNVNTBGFEJTUBODFGPSPDDVQBOUTPGUIFWFIJDMF
DBOOPUCFNBJOUBJOFEEVFUPUIFQIZTJDBMMPDBUJPOPGUIFBOUFOOBTJUJT
SFDPNNFOEFEUIBUSFEVDFEUSBOTNJUQPXFS8JTVTFE

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
2
Limited 3 Year Warranty Statement
Barrett Communications Pty Ltd provides a maximum three year warranty on 
all equipment it manufactures which is to be used expressly for high frequency, 
single sideband radio communications. This warranty covers faults arising from 
defects in design, workmanship or materials. Please note that this warranty 
does not cover batteries.
Should any fault due to bad design, workmanship or materials be proven 
at any time within the warranty period, the company will rectify such fault 
free of charge providing the equipment is returned freight paid to Barrett 
&RPPXQLFDWLRQV3W\/WGKHDGRIÀFHRUWRDQDXWKRULVHGVHUYLFHFHQWUH7KH
warranty period for all products is thirty six (36) months after date of shipment 
from the factory.
In the event that Barrett Communications repairs or replaces a defective 
product part under warranty, the repaired or replaced product will remain 
covered under and throughout the term of the original warranty period up to 
its expiration. No repair or replacement will extend the warranty term past the 
original thirty six (36) month anniversary of the original shipment delivery date 
of the Barrett Product.
This warranty shall not cover any abuse, accident, improper installation, 
connection, adjustment or use other than in accordance with the instructions 
issued by the company.
In addition, this warranty shall not cover the distance which transceiver 
products will operate over or quality of transmission or reception as a result 
of unfavourable environmental conditions. Nor shall this warranty cover the 
quality of transmission and reception of transceivers mounted in vehicles or 
YHVVHOVWKDWKDYHQRWEHHQVXIÀFLHQWO\HOHFWULFDOO\VXSSUHVVHG
Subject to the matters set out in this warranty, no liability, expressed or implied 
is accepted for any consequential loss, damage or injury arising as a result of a 
fault in the equipment and, all expressed or implied warranties as to quality or 
ÀWQHVVIRUDQ\SXUSRVHDUHKHUHE\H[FOXGHG
This warranty does not extend to products supplied by the company which 
are not designed or manufactured by it. Barrett Communications Pty Ltd will 
however make every endeavour to ensure that the purchaser receives full 
EHQHÀWRQDQ\ZDUUDQW\JLYHQE\WKHRULJLQDOHTXLSPHQWPDQXIDFWXUHU
This warranty is restricted to the original purchaser. Where the original 
purchaser is a reseller who has purchased for the purpose of resale, warranty 
shall be extended to the reseller’s customer.

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
21
Warranty Registration and Technical Support
Thank you for purchasing Barrett HF communications products.
Please complete the warranty registration form on the next page and send it to 
us by mail, fax or email. Please see contact details below.
Once received your contact details will be registered against the serial numbers 
of your equipment and Barrett Communications will then be able to contact 
you if needed to keep you informed of any developments relating to your 
equipment.
If you have access to the Internet you can use the warranty registration page in 
the tech support section of our website to register your warranty form. Please 
go to www.barrettcommunications.com.au/Support.html
Barrett Communications is proud of its reputation for support of its customers. 
This registration process has been introduced so that we may continue to 
improve our level of support to you.

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
21
Warranty Registration Contact Details
By Mail  The registration forms can be returned by mail, (no postage stamp 
required in Australia)
Facsimile  08 9418 6757 (International +618 9418 6757) 
Email support@barrettcommunications.com.au
Our customer / dealer technical support department can be contacted via land 
mail, email, telephone or with the support department contact form on the 
tech support web page.
%DUUHWW&RPPXQLFDWLRQV3W\/WG+HDG2I¿FH
PO Box 1214, Bibra Lake WA 6965 AUSTRALIA 
Toll Free Tel: 1800 999 580 (Within Australia)  
Tel: +618 9434 1700  
Fax: +618 9418 6757  
email: support@barrettcommunications.com.au
7HOHSKRQHVXSSRUWIURPWKH$XVWUDOLDQVXSSRUWRIÀFHLVDYDLODEOHIURPDP
to 4:30 pm local time Monday to Friday.
%DUUHWW&RPPXQLFDWLRQV±(XURSH
Unit 9, Fulcrum 2 Victory Park, Solent Way,  
Whiteley Hampshire PO15 7FN United Kingdom
Tel: +44 (0) 1489 880 332  
Fax: +44 (0) 1489 565 422  
email: support@barrettcommunications.co.uk
7HOHSKRQHVXSSRUWIURPWKH8.VXSSRUWRIÀFHLVDYDLODEOHIURPDPWR
5:00 pm local time Monday to Friday.

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
21
Index
A
AGC Hang  95
Alarm Audio Level  87
ALE  100
3G Address  110
3G Alias  70
3G Channels  110
Alias  70
Channel  64
Enable/Disable  113
Save Settings  110
Settings  101
State  102
Antenna
911 Automatic Antenna Tuner  173
Connection Details (Base Station)  176
Connection Details (Marine)  201
912 Multi wire Broadband Dipoles  165
912 Single Wire Broadband Dipoles  162
913 Series Helical Dipoles  167
914 Series Manual Tap Whip  193
Connection Details  196
915 Wire Dipole  169
2018 Mobile Magnetic Loop  197
Connection Details  197
2019 Automatic Tuning Mobile Antenna  186
Assembly  189
Connection Details (Mobile Pack)  191
Mounting  186
4011 Automatic Antenna Tuner for Base 
Station  177
Connection Details  178
4017 Automatic Tuning Horizontal Dipole  
171
Connection Details  172
Interference Suppression Kit  183
Noise Suppression  182
Socket  64, 75
Type  98
ARINC, Enable/Disable  113
ATU Connector  151
Audio  86
Mute  137
Audio Bandwidth  89
Audio in Tx  78
Audio Level Alarm  87
Audio Record  91
Audio Scrambler  56
Auxiliary Connector  149
B
Backlight Level  116
Backlight Timeout  116
Baud Rate  97
Beacon Call  32
Receive  32
Send  32
Beep Level  87
BER Threshold  107
BITE Test  54
BoB  123
Name  123
Network Settings  124
Network Status  127
Bonjour  139
Broadcast Filter  95
C
Call History  47
Calling Groups  34

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
21
Call Key  31
Call Type  31
Channel  60, 130
Add a Channel  61
ALE Channel  64
Antenna Socket  64
Delete a Channel  66
Edit a Channel  65
Label  59
Mode  63
Number  62
Rx Frequency  62
Save Channel  65
Search a Channel  131
Selcall Format  64
Select Channel  131
Tx Frequency  63
Tx Power  63
Clarify Range  94
Connectors  148
ATU  151
Auxiliary  149
Control Head  149
Control Head Rear Panel  152
GPS  148
Microphone  151
Power  148
Contacts  45, 66
Add  67
Delete Contact  72
Edit Contact  71
Search Contacts  67
Sort Contacts  66
Contacts screen  66
Control Head Connector  149
Control Head Rear Panel Connector  152
Cooling Fan  147
Connector  152
D
Data Link Timeout  108
Date and Time  53
Digital Voice  138
Enable/Disable  113
Display  22, 115
Backlight Level  116
Backlight Timeout  116
Language  54
Timeout Behaviour  116
Dwell Time  73
E
Email Address  70
Emergency Calls  26
Export  114
EXT Alarm Type  97
F
Favourite  46
Add  71
Frequency Hopping, Enable/Disable  113
Front Panel  15
Front Panel Rear View  16
G
*HQHUDO&RQÀJXUDWLRQVVFUHHQ52
General Menu  52
GPS Broadcast  84
GPS Connector  148
GPS Pos  41
GPS Req  40

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
21
Group Calls
Calling Groups  31
Receiving Groups  34
H
Hangup  42
Hop  132
Hopping PIN  55
Hop Rate
Frequency  56
Secure Calls  58
I
,PSRUW&RQÀJXUDWLRQ128
Import / Update  127
Installation  156
Land Based  159
Fixed Station  160
Mobile  180
Marine  198
Interference Suppression Kit  183
International Selcall ID  79
IO  96
K
Keypad  16
L
Labels  59
Label screen  62
Language  54
Last Number Redial  37
Line Audio  90
Line Follows Digital Voice  90
Line In Level  91
Line Out Level  91
Lock  85
Locking the Screen  21
LQA Averaging  105
LQA Decay Rate  105
LQA Exchange  104
LSU Mode  109
M
Menu Map  50
Menus  49
Meter Mode
Receive  117
Transmit  117
Microphone  24
Transmit Timeout  93
Tx Over Beep  53
Up / Down Keys  53
Microphone Connector  151
Mobile Pack  156
Mode  63, 134
Mode screen  63
Mute  137
Attributes  77
Audio  137
Signal Strength Level  77, 137
Syllabic Sensitivity  77, 137
N
Network  118
Network Selcall ID screen  79
Selcall Networks  81
Noise Blanker  94, 138
Noise Suppression  182
NR  135
O
OEM 1 Calls  30

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
21
OEM Privacy Key  80
OEM Secure Key  56
OEM Secure Type  56
OEM Selcall ID  80
Option PINs  113
P
Pagecall  38
Receive  39
Send  38
Power Connector  148
Preamable Time  79
Preselector  95
Preset Map  102
Program Firmware  129
Programming  25
R
Rear Panel  17
Receive Meter Mode  117
Response Control  103
Resume Time  73
Resync  21
RF  92
Ring Tones  88
RS232 Baud Rate  97
RS232 Out  96
5[&RQÀJXUDWLRQ88
Rx Preamp  92
S
Scan  72, 135
Rate  72
Selcall Scan  136
Signal Strength Scan  136
Voice (Syllabic) Scan  136
Scan Table  73
Add  74
Antenna Type  75
Channel List  75
Delete  76
Edit  74, 76
Name  75
Save  76
Select  73
SDR Name  52
SDR Serial Number  114
Secure Call  44
Enable/Disable  113
Hop Rate  58
Secure Call Codes  58
Secure Data Key  57
Secure Digital Voice Key  57
Security  55
Selcall  29, 33, 78
Format  82
ID 4 Digit  82
6 Digit  83
International Selcall ID  79
OEM Selcall ID  80
Networks  81
Add  81
Alias  82
Delete  84
Edit  83
Save  83
Receive  33
Selcall Screen  78
Send  33
Selcall Format  64

BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
21
Selcall Format screen  64
Self IDs  29
Serial Number  114
Settings Menu  49
Settings screen  49
Signal Strength Level  77
SINAD Threshold  106
Software Version Information screen  112
Sounding Address  104
Sounding Control  103
6SHFLÀFDWLRQV153
General  153
Receiver  154
Transmitter  155
Squelch  77
SSL  77
Station ID Ranges  30
Status Call  43
Swipe Menu  138
Syllabic Sensitivity  77
System Info  111
System Status  111
T
TC2 Programming Mode  58
Telcall  29, 35
Receive  37
Send  35
Temperature Units  117
Threshold Test  106
Transceiver  15
Front Panel  15
Front Panel Rear View  16
Keypad  16
Rear Panel  17
Switching On / Off  18
Transceiver Lock  85
Transceiver Name  52
Transceiver Options  113
Transmit Meter Mode  117
Tune  134
7[&RQÀJXUDWLRQ89
Tx Over Beep  93
Tx Power  63
Tx Power Level  94
Tx Power screen  63
U
Unlocking the Screen  21
V
Version Information  112
Voice Link Timeout  108
Voice Security, Enable/Disable  113
Volume  19
VSWR  134
W
WiFi
Access Point Mode  120
Access Point Setup  120
Client  118
Enable/Disable  113
Operation Mode  118
Wireless Application  139
Barrett Communications Pty Ltd 
47 Discovery Drive, Bibra Lake, WA 6163 Australia 
Tel: +61 8 9434 1700  Fax: +61 8 9418 6757 
Email: information@barrettcommunications.com.au 
www.barrettcommunications.com.au