Yaesu Musen 50013X20 PORTABLE AIRBAND TRANSCEIVER User Manual FTA 750 FTA 550 FTA 450 Operating Manual
Yaesu Musen Co., Ltd. PORTABLE AIRBAND TRANSCEIVER FTA 750 FTA 550 FTA 450 Operating Manual
Contents
- 1. Operational Manual
- 2. Operating Manual 1
Operating Manual 1

Operating Manual
AIR BAND TRANSCEIVER
FTA-750 
FTA-550 
FTA-450
FCC ID: K6650013X20 
IC: 511B-50013X20

Contents
Important Notice! .......................................................... 1
Introduction ................................................................... 2
Models, Accessories and Options .............................. 3
Models ............................................................................... 3
Supplied Accessories ......................................................... 3
Available Options .............................................................. 3
Controls & Connectors ................................................ 4
LCD Display .................................................................. 8
Before You Begin ........................................................ 12
Battery Installation and Removal .................................... 12
Battery Charging .............................................................. 13
Alkaline Battery Tray Installation ................................... 14
Low Battery Indication .................................................... 14
External DC Power Supply Connection .......................... 15
Antenna Installation ......................................................... 15
Belt Clip Installation ........................................................ 16
Headset Connection ......................................................... 16
Precautions ....................................................................... 17
Basic Operation .......................................................... 18
Reception (COM Band) ................................................... 18
Accessing the 121.5 MHz Emergency Frequency ........... 21
Transmission (COM Band) .............................................. 22
Operation Bands .............................................................. 23
Operation Modes ............................................................. 24
Resetting the Radio .......................................................... 25
Advanced Operation .................................................. 27
Reception of VOR Signals (except for FTA-450) ........... 27
Reception of ILS Signals (except for FTA-450) .............. 31
Split Operation ................................................................. 33
Reception of Weather Channel Broadcasts ...................... 35
Dual Watch Operation ..................................................... 37
Timer Mode Operation .................................................... 39
TOT Feature ..................................................................... 43
Saving the Battery during Reception ............................... 43
Using the Headset Microphone ....................................... 44
VOX Operation ................................................................ 44
Side Tone Control ............................................................ 45
Lock Function .................................................................. 46
PTT Lock Function .......................................................... 48
Changing the Channel Steps ............................................ 48
ANL Feature .................................................................... 49
Memory Operation ...................................................... 50
Recalling the Memories ................................................... 50
Instant Storage ................................................................. 52
Maintenance of the Memory ............................................ 53
Scanning Operation ................................................... 57
Scanning Channels .......................................................... 57
Selecting Scanning Band ................................................. 58
Scanning the Specied Channels ..................................... 59
GPS Function (FTA-750 Only) ................................... 61
Activating the GPS Unit .................................................. 61
Displaying the Position Information ................................ 62
Memorizing the Position Information ............................. 64
Recording the Position Information ................................ 65
Waypoint Navigation (FTA-750 Only) ........................ 66
Entering the Navigation (NAVI) Mode ........................... 66
Setting the Destination ..................................................... 67
Setup Mode ................................................................. 70
Basic Operation ............................................................... 70
Maintenance of the Memory ............................................ 71
Setting of the COMM Mode Operation ........................... 72
Setting of the GPS Mode Operation (FTA-750 Only) ..... 75
Setting of the Operation and Conguration of the Radio 80
About the Radio ............................................................... 82
Summary of the SETUP Menu ........................................ 83
Specications ............................................................. 85
Troubleshooting for Headset Connection ................ 87
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 1
Important notIce!
FCC RF Exposure Compliance Requirements for Occupational Use Only:
The FTA-750/FTA-550/FTA-450 have been tested and comply with the Federal Communications Commission (FCC) 
RF exposure limits for Occupational Use/Controlled Exposure Environment. In addition, both radios comply with the 
following Standards and Guidelines:
  FCC 96-326, Guidelines for Evaluating the Environmental Effects of Radio-Frequency Radiation.
  FCC OET Bulletin 65 Edition 97-01 (1997) Supplement C, Evaluating Compliance with FCC Guidelines for Hu-
man 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 Electromag-
netic Fields - RF and Microwave.
  This radio is NOT approved for use by the general population in an uncontrolled environment. This radio is 
restricted to occupational use, work related operations only where the radio operator must have the knowl-
edge to control its RF exposure conditions.
  When transmitting, hold the radio in a vertical position with its microphone 1 to 2 inches (2.5 to 5 cm) away 
from your mouth and keep the antenna at least 1 inch (2.5 cm) away from your head and body.
  The radio must be used with a maximum operating duty cycle not exceeding 50%, in typical Push-to-Talk 
congurations. DO NOT transmit for more than 50% of total radio use time (50% duty cycle). Transmitting 
more than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded.
  The radio is transmitting when the “TX” icon is displayed on the upper left corner of the screen of the radio. 
You can cause the radio to transmit by pressing the PTT button.
  Always use YAESU authorized accessories.
NOTICE
There are no user-serviceable points inside this transceiver. 
All service jobs must be referred to your Authorized Service Center.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
2
IntroductIon
The YAESU FTA-750/FTA-550/FTA-450 are compact, stylish, solid hand-held transceivers providing communica-
tion (transmit and receive) capability on the International Aircraft Communication Band (“COM” band: 118 to 136.975 
MHz), and they additionally provide VOR and ILS navigation features on the “NAV” band (108 to 117.975 MHz).
The FTA-750/FTA-550/FTA-450 boast a 1.7” x 1.7” (43.2 x 43.2 mm) full dot matrix LCD displaying a plenty of in-
formation in a row. The FTA-750/FTA-550/FTA-450 include NOAA weather band monitoring and 200 memory chan-
nels. The channel congurations can be easily reprogrammed in minutes using the optional PC Programming Software 
and your PC. In addition, the FTA-750 provides positioning and navigation features realized by the internal GPS unit.
We recommend that you read this manual in its entirety, so as to understand the many features of the FTA-750/FTA-
550/FTA-450 completely. Keep this manual handy, so you may use it for reference.
Note:  The VOR, ILS, and GPS navigation features of the FTA-750/FTA-550 are for supplemental aids to naviga-
tion only, and are not intended to be a substitute for accurate (primary) VOR or landing service equipment.  
You assume full responsibility for the use of the FTA-750/FTA-550.
Congratulations!
You  now  have at  your  ngertips  a  valuable  communications  tool, a YAESU  two-way  radio!  Rugged,  reliable 
and easy to use, your YAESU radio will keep you in constant touch with your friends and colleagues for years to 
come, with negligible maintenance or down-time.
Please take a few minutes to read this manual carefully. The information presented here will allow you to derive 
maximum performance from your radio, in case questions arise later on.
We’re glad you joined the YAESU team. YAESU products cover the entire spectrum of radio communications 
applications, and our worldwide support network is here to serve you. Let us help you get your message across.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 3
models, accessorIes and optIons
Models
FTA-750L  Lithium-ion battery pack included
FTA-550L  Lithium-ion battery pack included
FTA-450L  Lithium-ion battery pack included
FTA-550 AA Battery Version
  Rechargeable battery pack not included. 
Requires “AA” batteries for operation.
Supplied Accessories
Lithium-ion Battery Pack (7.4V)  SBR-12LI*1
AC Charger  SAD-11*1
Charger Cradle  SBH-11*1
Cigarette Lighter DC/DC Converter  SDD-12
Helical Antenna  SRA-13A*2
Belt Clip  SHB-11
Headset Adapter Cable  SCU-15
Alkaline Battery Tray  SBT-12
USB Cable  T9101606
Ferrite Core  L9190192
Operating Manual
Warranty Card
*1  These accessories are not supplied with the 
FTA-550 AA Battery Version.
*2  Antenna gain: 2.15 dBi
  Impedance: 50 ohms
Available Options
SSM-10A  Speaker Microphone
SEP-10A   Earphone (available only with the SSM-
10A)
YCE01  PC Programming Software
(Download the YCE01 PC Programming 
Software from the YAESU website.)
Availability of accessories may vary. Some accessories 
are supplied as standard per local requirements, while 
others may be unavailable in some regions. Consult 
your YAESU Dealer for details regarding these and any 
newly-available options.
Connection of any non-YAESU-approved accessory, 
should it cause damage, may void the Limited Warranty 
on this apparatus.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
4
controls & connectors (top panel)
 Antenna Jack
  This BNC connector accepts the supplied flexible 
antenna, or an external antenna designed to provide 
50  Ω  impedance  on  the Aircraft Communication 
Band.
 VOLUME (Inner) Knob
  Turn this (inner) control clockwise to increase the 
volume. 
 DIAL Selector (Outer) Knob
  This (outer) 20-position detented rotary switch tunes 
the operating frequency or selects the memory chan-
nels.
DIAL
VOL
  
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 5
 LCD (Liquid Crystal Display)
  The display shows selected operating conditions, as 
indicated on Pages 8 to 11.
 Microphone
  Speak into this opening in a normal voice level, 
while pressing the PTT switch, to transmit.
 Cursor Keys and ENT Key
  The cursor keys [◄] and [►] are used to select an 
item displayed on the LCD. 
  Press the ENT key to determine the selection or 
entered values.
 Control Keys
  Press the MENU key to display the MENU screen.
  Press the BACK key to return the display to the 
previous screen.
  Press the SAVE key to store the current channel 
information to the memory.
  Press and hold the lock key [   ] to enable the 
lock feature. Controls and keys will be disabled. 
Press and hold again to disable the lock feature.
 COMM Key
  Press this key to enter the COMM mode instantly.
 Numeric Keypad
  The keypad is used when setting frequencies. 
 121.5 Key
  Press and hold this key to access the emergency 
frequency (121.5 MHz) instantly.
 Loudspeaker
  The internal speaker is located in this position.
controls & connectors (Front panel)
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
6
 POWER Switch
  Press and hold this button to turn the radio on and 
off.
 PTT (Push To Talk) Switch
  Press and hold this button to transmit when you are 
operating in the COM band. Release this button to 
return to the “Receive” mode. See Page 22 for de-
tails.
 SQL (Squelch) Switch
  This button may be pressed to “open” the squelch 
manually, allowing you to listen for very weak 
signals. Press and hold this button for 2 seconds 
to “open” the squelch continuously. Press this but-
ton again to resume normal (quiet) monitoring. See 
Page 20 for details.
controls & connectors (leFt sIde)
DATA
MIC/SP
EXT
DC
PTT
SQL
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 7
 MIC/SP Jack
  You may connect the supplied SCU-15 Headset 
Adapter Cable or the optional SSM-10A Speaker/
Microphone to this jack. To use this jack, you must 
rst remove the cover from the transceiver body.
Do not allow the FTA-750/FTA-550/FTA-
450 to get wet while the cover over the 
MIC/SP jack is removed. 
 DATA Jack
  You may connect the optional USB cable to this 
jack. To use this jack, you must rst lift the rubber 
cover away from the transceiver body.
Do not allow the FTA-750/FTA-550/-
FTA-450 to get wet while the rubber cover 
is removed. 
 EXT DC Jack
  When an external 9.5- to 10.5-Volt DC power 
source is available, you may connect the SDD-12 
Cigarette Lighter DC/DC Converter here.
1) Do not allow the FTA-750/FTA-550/
FTA-450 to get wet while the rubber cover 
is removed.
2) Do not connect any accessory unapproved by 
YAESU to supply DC power. 
controls & connectors (rIght sIde)
DATA
MIC/SP
EXT
DC
PTT
SQL
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
8
lcd dIsplay (com Band)
VOL
BUSY
MEM
VDW ±
FLG
MR
G
133.800
  132.400 
  134.800 MIAMI
  127.600 MIAMI 2
  119.150 
  124.250 North
  129.200 
Los Angeles
“BUSY” icon appears during 
audio reception, or “TX” during 
transmission.
This field displays the icons indicating 
various statuses of the transceiver, such 
as “GPS on”, “Data Logger on”, “Timer 
on”, “Battery full”, etc.
This field displays the 
operation modes.
This field displays the 
operating frequency.
“MEM” icon appears if 
the selected channel is 
programmed into the Scan  
Memory.
This field displays the 
icons indicating various 
statuses of functions, 
such as “VOX on”, “Split 
on”, etc.
This field displays the 
tag name of the current 
channel.
This field displays the 
level of the audio volume 
or the squelch.
This field displays the 
channels you have 
previously used.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 9
lcd dIsplay (naV Band: except For Fta-450)
Vor cdI screen
113.600
VOL
SOGKT
150
355°
OBS
000°
NAV VOR
FROM
KLAX-VOR
N
S
EW
33
24
21 15
12
30
3
6
113.600
VOL
355°
OBS
000°
NAV VOR
FROM
KLAX-VOR
N
S
EW
33
24
21 15
12
30
3
6
FTA-750 FTA-550
  Compass rose
  Course indicator (OBS direction)
  Deviation marks
  Course deviation needle
  OBS (omni bearing selector) value
  VOR value
  TO/FROM indicator
  SOG (speed over ground) value according to the 
GPS signal
Ils cdI screen
108.500
VOL
NAV
LOC
GS
KLAX-RWY07R
N
S
EW
33
24
21 15
12
30
3
6
 
108.500
VOL
NAV
LOC
KLAX-RWY07R
 
FTA-750 FTA-550
  Compass rose
  Course (runway) indicator
  Deviation marks for localizer
  Course deviation needle for localizer
  Height deviation indicator for glide slope
  Deviation marks for glide slope
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
10
lcd dIsplay (Fta-750 only)
gps InFormatIon screen
133.800
MR
FLG
VOL
LAT/LON
 23°
56.890N
123°
56.890W
COG
095°
Oct/25 09:56AM
SOGKT
095 ALTM
0956.8
BUSY
MEM
DATE
KLAX-ATIS
 
  Latitude and longitude values
  COG (course over ground) value
  Date obtained from the GPS signal
  SOG (speed over ground) value
  Altitude value
gps compass screen
133.800
VOL
SOGkph
360
 Oct/25
09:56AM
COG T
000°
ALTft
10000
BUSY
MR
FLG
KLAX-ATIS
MEM
  Compass rose
  Course indicator
  COG (course over ground) value
  SOG (speed over ground) value
  Altitude value
  Date obtained from the GPS signal
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 11
lcd dIsplay (Fta-750 only)
gps status screen
133.800
VOL
BUSY
FLG
MR
KLAX-ATIS
LAT/LON
 23°
56.890N
123°
56.890W
Oct/25 09:56AM
DATE
STATUS
SEARCH
  GPS receiver operation status
  Radar scope for captured GPS satellites
  Date obtained from the GPS signal
  Latitude and longitude values
  GPS signal strength indicator
WaypoInt naVIgatIon screen
133.800
VOL
SOGkph
360
COG T
000°
DSTkm
10
KLAX
BUSY
KLAX-ATIS
MR
ALL
  Compass rose
  Course indicator
  Destination indicator
  Tag name of the destination
  DST (distance) value
  COG (course over ground) value
  SOG (speed over ground) value
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
12
BeFore you BegIn
Battery Installation and Removal
  To install the battery, insert the battery pack SBR-
12LI into the battery compartment on the back of 
the 
transceiver
, press the end of the battery pack 
while pressing the battery pack latch on the bot-
tom of the 
transceiver
, then lock the pack by sliding 
the locking plate beside the latch until the entire 
“LOCK” appears
.
Note:
Be sure that the rubber gasket on the SBR-12LI is 
not loose when inserting.
  To remove the battery, turn the 
transceiver
 off, slide 
the locking plate until the 
“UNLOCK” appears 
en-
tirely
, lift up the 
end of the battery pack by pressing 
the battery pack latch, then pull out the battery from 
the radio.
PUSH
DATA
MIC/SP
EXT
DC
Battery Pack 
Latch
Do not attempt to open any of the recharge-
able Lithium-ion packs, as personal injury 
or damage to the Lithium-ion pack could 
occur if a cell or cells become accidentally short-
circuited.
Note:
To remove the battery pack after the belt clip SHB-11 is 
mounted (see Page 16), lift up the clip before you press 
the battery pack latch.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 13
BeFore you BegIn
side of the transceiver directly. In this case, the 
“   ” icon will appear in the top right corner 
of the LCD display.
4.  If the transceiver is inserted correctly, the RED indi-
cator on the SBH-11 will glow. 
  A fully-discharged pack will be charged com-
pletely in 4 hours, and then the GREEN indica-
tor on the SBH-11 will glow.
  It takes 8 hours for full charge with the SAD-
11 connected to the transceiver directly.
Important Notes:
 The 
SAD-11 is not designed to power the trans-
ceiver for operation (transmission).
  Do not leave the charger connected to the trans-
ceiver for continuous periods in excess of 24 hours. 
Long term overcharging can degrade the Lithium-
ion battery pack and signicantly shorten its useful 
life.
  If using a charger other than the SAD-11, SBH-11, 
or if using a battery pack other than the SBR-12LI, 
follow the appropriate instructions provided with 
the charger/battery. Contact your Dealer if you have 
any doubts about the appropriateness of the particu-
lar charger or battery pack you intend to use.
Battery Charging
It is necessary to charge the Lithium-ion battery fully 
before its rst use. Follow the procedure below:
1. 
Install the Lithium-ion battery pack onto the trans-
ceiver. Ensure that the transceiver is switched off.
2.  Insert the cable plug of the SAD-11 Battery Char-
ger into the jack located on the back of the SBH-11 
Charging Cradle, then plug the SAD-11 into the AC 
line outlet.
EXT
DC
MIC/SP
DATA
VOL
DIAL
SBH-11
SAD-11
3.  Insert the transceiver into the SBH-11; the antenna 
jack should be at the left side when viewing the 
cradle from the front.
  You may insert the cable plug of the SAD-
11 into the EXT DC jack located on the right 
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
14
Alkaline Battery Tray Installation
The 
supplied
 SBT-12 Battery Tray allows operation of 
the FTA-750/FTA-550/FTA-450 using six “AA” size 
alkaline battery cells.
  When installing a cell, insert the (–) end rst,  then 
press in the (+) end so the cell snaps into place. Pay 
attention to the polarity indicated inside the case.
SBT-12
Alkaline Battery Tray
The SBT-12 must not be used with re-
chargeable cells. The SBT-12 does not con-
tain the thermal and over-current protec-
tion circuits required when utilizing Ni-Cd and Ni-
MH cells.
Note: Replace all six cells at the same time in case of 
low battery.
  To install the SBT-12, remove the Lithium-ion bat-
tery pack first from the transceiver, turn the open 
side of the SBT-12 down, then insert it into the bat-
tery compartment. 
Note: Be sure that the rubber gasket on the SBT-12 
is not loose when inserting.
Low Battery Indication
As your battery discharges during use, the voltage will 
gradually become lower. When the battery voltage 
reaches 6.0 Volts, the “ ” icon will blink on the 
LCD display, indicating that the battery pack must be 
recharged or the alkaline battery cells must be replaced 
before further use.
 
Avoid recharging Lithium-ion batteries before the 
“Low Battery” indicator is observed, as this can 
degrade the charge capacity of your Lithium-ion 
battery pack. YAESU recommends that you carry an 
extra, fully-charged pack with you so you will not 
lose communications capability due to a depleted 
Lithium-ion battery.
 The fully-charged battery lasts for 12 hours on the 
FTA-750, 13.5 hours on the FTA-550 or ??.? hours 
on the FTA-450 under the conditions below: 
Battery saver ... OFF
Operation ratio ... TX:RX:Standby = 6:6:48 (sec)
BeFore you BegIn
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 15
External DC Power Supply Connection
You may insert the cable plug of the optional SDD-12 
Cigarette Lighter DC/DC Converter into the EXT DC 
jack located on the right side of the transceiver. In this 
case, the “   ” icon will appear in the top right corner 
of the LCD display.
When making DC connections via the SDD-12, be ab-
solutely certain to observe the proper voltage level and 
polarity guidelines. 
 The SDD-12 can be connected to 12 to 24 Volt DC 
power sources.
SDD-12
Cigarette Lighter DC/DC 
Converter (12 to 24 Volts)
Ferrite Core
Wind the cable one turn,  
then snap two halves
As close  
as possible
  For noise reduction from exogenous noise, wind one 
turn of the SDD-12 cable around the ferrite core, 
and snap its two halves together, per the illustration 
above. Attach the ferrite core as close as possible to 
the SDD-12 body, as shown.
Do not connect any accessory unapproved 
by YAESU to supply DC power; otherwise 
the FTA-750/FTA-550/FTA-450 may be 
damaged.
Antenna Installation
  To attach the supplied antenna to the FTA-750/
FTA-550/FTA-450, grasp the base of the antenna 
rmly, and exert a moderate “pinching” pressure on 
the base as you press the antenna onto the radio’s 
antenna connector. While exerting this pressure, 
rotate the antenna clockwise 1/4 turn to lock the an-
tenna in place.
BeFore you BegIn
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
16
BeFore you BegIn
Belt Clip Installation
You may mount the clip to the rear of the FTA-750/
FTA-550/FTA-450 using the supplied screws. 
DATA
MIC/SP
EXT
DC
DATA
MIC/SP
EXT
DC
SHB-11
Belt Clip 
with two screws (M3 x 8)
Headset Connection
You may use an optional headset through the supplied 
SCU-15 Headset Adapter Cable (see also Page 87). 
Headset
(not supplied)
SCU-15
Headset Adapter Cable
1.  Remove the cover and two screws of the MIC/SP 
jack located on the right side of the transceiver.
2.  Insert the plug of the SCU-15 to the MIC/SP jack.
3.  Fix the plug with two screws attached to the SCU-
15.
  Either of the plug directions are acceptable as 
long as the both screws t the screw holes.
4.  Insert the plugs of the headset to the sockets of the 
SCU-15.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 17
BeFore you BegIn
Precautions
 The 
FTA-750/FTA-550/FTA-450 are capable of 
two-way communication on channels used for criti-
cal aviation safety communications. Therefore, it is 
important that this radio be kept away from children 
or other unauthorized users at all times.
  Do not dispose of the Lithium-ion battery pack in a 
re. Do not carry a Lithium-ion battery pack in your 
pocket, where keys or coins could short the termi-
nals. This could create a serious fire/burn danger, 
and possibly cause damage to the Lithium-ion pack.
 The 
FTA-750/FTA-550/FTA-450 are designed to 
have the waterproof capability equivalent to IPX5. 
Do not allow the radio to become submerged, and 
do not subject it to water spray under pressure.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
18
BasIc operatIon
Reception (COM Band)
Turning the radio on and off
 To turn the radio on, 
press and hold the 
POWER switch.
 “WARNING” will be 
displayed. PTT
SQL
This device can only 
be used as an aid to 
navigation for VFR. 
 All information 
is presented for 
reference only. 
 You assume total 
responsibility and 
risk associated with 
using this device.
WARNING
I agree
  If you agree with the 
warning message, press 
the [ENT] key.
  A channel frequency will 
appear on the display. If 
not, press the [COMM] 
key.
  The “
BUSY
” icon appears on the display when the 
audio signal is received on the current frequency.
127.300
VOL
BUSY
 To turn the radio off, press and hold the POWER 
switch.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 19
BasIc operatIon
Adjusting the frequency
  You may turn the DIAL 
selector (outer) knob on 
the top panel to choose 
the desired operating 
frequency. The channel 
frequency will appear 
on the LCD.
  Directly entering frequencies from the keypad is the 
easiest method if you know the frequency on which 
you wish to operate. Just enter the ve digits of the 
frequency to move to that frequency.
  For example, to set 
134.35 MHz, 
 press 
[1]  [3]  [4] 
 [3]  [5].
  To set 118.275 MHz, 
you do not need to 
press the nal “5” in the 
frequency as below: 
 [1]  [1]  [8]  [2] 
 [7].
13-.---
VOL
  You may recall the operating frequency that you 
have used by pressing the [ENT] key. 
  A list of frequencies you have used will appear be-
low the VOL meter on the display.
  Select the desired fre-
quency by pressing the 
[◄] or [►] key, then 
press the [ENT] key.
133.800
VOL
  132.400 
  134.800 
  127.600 
  119.150 
  124.250 
  129.200 
BUSY
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
20
Adjusting the volume
  Rotate the VOL (inner) 
knob to set the volume 
level. If no signal is 
present, press the SQL 
switch; background 
noise will now be heard, 
and you may use this 
noise to set the VOL 
knob for the desired 
audio level. Press and 
hold the SQL switch 
to silence the noise and 
resume normal (quiet) 
monitoring.
PTT
SQL
Adjusting the squelch
  Press the SQL switch, 
then rotate the DIAL 
selector knob to set the 
squelch threshold (0 to 
15) so that the receiver 
is just silenced. A high-
er number indicates that 
a higher signal level 
is required in order to 
open the squelch.
PTT
SQL
127.300
BUSY
SQL
  Press and hold the SQL switch to set the squelch 
threshold to 0 (off).
  Your new setting will be saved each time you per-
form either of the operations above.
BasIc operatIon
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 21
BasIc operatIon
Monitor Switch
When listening to a very weak signal from an aircraft or 
ground station, you may observe the signal disappearing 
periodically as the incoming signal strength becomes too 
weak to override the squelch threshold setting.
To disable the squelch temporarily, press and hold the 
SQL switch for 2 seconds. The squelch will remain 
open and you should have a better chance of hearing 
weak signals.
To return to normal operation, press the SQL momen-
tarily.
Accessing the 121.5 MHz Emergency Frequency
The FTA-750/FTA-550/FTA-450 can quickly access 
the 121.500 MHz emergency frequency. This function 
can be activated even when the keypad lock function 
(described on Page 46) is in use.
  To access the emergen-
cy frequency, press and 
hold the [121.5] key.
  After four beeps, the 
transceiver enters the 
emergency mode and 
the frequency is au-
tomatically tuned to 
121.500 MHz.
121.500
VOL
  132.400 
  134.800 
  127.600 
  119.150 
  124.250 
  129.200 
EMERGENCY
EMG
  To exit the emergency mode, press the [COMM] 
key. The message conrming the cancelation of the 
emergency mode will appear. Press the [◄] or [►] 
key to select “YES”, then press the [ENT] key.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
22
BasIc operatIon
Transmission (COM Band)
  To transmit, press and 
hold the PTT switch. 
Speak into the micro-
phone area of the front 
panel grille in a normal 
voice level.
  The “
TX
” icon, which 
indicates that the FTA-
750/FTA-550/FTA-
450 are in the transmit 
mode, appears on the 
display.
PTT
SQL
127.300
VOL
TX
  To return to the receive mode, release the PTT 
switch.
Operating Advice: Use of Internal Microphone 
Your FTA-750/FTA-550/FTA-450 are sealed against water ingress, which includes wa-
terproof seals around the microphone and speaker enclosure. This requires that you fo-
cus your speech in the direction of the microphone’s location, so as to ensure sufcient 
voice input to the radio. Refer to the illustration and observe the location of the internal 
microphone. 
If you find it difficult to utilize the FTA-750/FTA-550/FTA-450 conveniently and 
safely while speaking directly into the microphone, we recommend the use of the SSM-
10A Speaker/Microphone (option), or an aftermarket aviation headset with boom mi-
crophone.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 23
BasIc operatIon
Operation Bands
When the FTA-750/FTA-550/FTA-450 are turned on 
for the rst time, it enters the COMM mode and displays 
the COM band screen. The COMM mode is the basic 
operation mode of the FTA-750/FTA-550/FTA-450 
that 
allows you to tune through either of the NAV (except 
for 
FTA-450
) and COM bands using the DIAL knob or 
the keypad.
 
NAV band (108.000 - 117.975
MHz): 
  Band for navigation utilizing data signals emitted by 
VOR (VHF omnidirectional range) stations and ILS 
(instrument landing system) of airports.
 
COM band (118.000 - 136.975
MHz): 
  Band for communication utilizing audio signals.
When the FTA-750/FTA-
550 receive a data signal 
associated with VOR or 
ILS, the display will auto-
matically switch to the NAV 
band screen which shows a 
CDI (course deviation indi-
cator) based on the received 
signal, and “
NAV
”, which 
indicates that the FTA-750/
FTA-550 are on the NAV 
band, appears on the dis-
play.
113.600
VOL
SOGKT
150
355°
OBS
000°
NAV VOR
FROM
KLAX-VOR
N
S
EW
33
24
21 15
12
30
3
6
When receiving a VOR 
signal on the FTA-750
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
24
Operation Modes
The FTA-750/FTA-550/
FTA-450 operate in either 
of the modes below. You 
can switch the modes via 
the MENU screen displayed 
by pressing the [MENU] 
key on the front panel.
FTA-750 FTA-550
When turning on the FTA-750/FTA-550/FTA-450, the 
last mode you have used before turning off will auto-
matically be entered.
 COMM
  The basic operating mode for communication. Navi-
gation through the NAV band is also performed on 
this mode.
 MR 
(MEMORY)
  This mode provides you with the ability to store and 
recall as many as 200 channels in the radio’s main 
memory bank. 
 
WX
(WEATHER)  (USA/Canada Only)
  The receive mode for the VHF weather chan-
nel broadcasts. 10 weather channels are pre-pro-
grammed at the factory. 
 
GPS (FTA-750 only)
  The position information and status of the GPS sat-
ellites according to the signals received by the built-
in GPS unit are displayed during this mode.
 
NAVI (FTA-750 only)
  Navigation to the waypoint (destination) memorized 
or manually input is carried out in this mode.
 
SETUP
  This mode allows certain aspects of your radio’s 
configuration to be customized for your personal 
operating conditions.
BasIc operatIon
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 25
BasIc operatIon
Convenient menu items
The MENU screen also includes the following items 
which provide advanced and convenient usage of the 
FTA-750/FTA-550/FTA-450.
 
TIMER
  You may use the FTA-750/FTA-550/FTA-450 as a 
countdown timer or a stopwatch through this menu.
 
FUNCTION
  Enables and disables various functions such as scan 
and dual watch features through this menu.
Resetting the Radio
To clear all memories and other settings to factory de-
faults: 
1. 
Press the 
[MENU] key to display the MENU screen
.
2. Select 
“SETUP” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
3.  Select “CONFIGURA-
TION” on the screen by 
pressing the [◄] or [►] 
key, and then press the 
[ENT] key.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
26
BasIc operatIon
4. 
Select 
“RESET” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
LAMP
CONTRAST
KEY BEEP
TIMER ALARM
BATTERY SAVE
LOCK SELECT
PTT LOCK
RESET
CONFIGURATION
5. 
Select 
“FACTORY” on 
the screen by pressing 
the [◄] or [►] key, and 
then press the [ENT] 
key.
RESET
FUNCTION
MEMORY
COMM & GPS
CONFIGURATION
FACTORY
CONFIGURATION
6. 
Select 
“OK?” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
RESET
FACTORY
CANCEL
CONFIGURATION
OK?
  The initialization will start and then “COMPLETED!” 
will be displayed after the radio returns to factory 
default.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 27
Reception of VOR Signals (except for FTA-450)
When the FTA-750/FTA-550 receive a VOR (VHF 
omnidirectional range) signal, the display will automati-
cally switch to the NAV band screen which shows a 
CDI (course deviation indicator) based on the received 
signal, and “
VOR
”, which indicates that the FTA-750/
FTA-550 are receiving the VOR signal, appears on the 
display.
113.600
VOL
SOGKT
150
355°
OBS
000°
NAV VOR
FROM
KLAX-VOR
N
S
EW
33
24
21 15
12
30
3
6
113.600
VOL
355°
OBS
000°
NAV VOR
FROM
KLAX-VOR
N
S
EW
33
24
21 15
12
30
3
6
FTA-750 FTA-550
  Compass rose
  Course indicator (OBS direction)
  Deviation marks
  Course deviation needle
  OBS (omni bearing selector) value
  VOR value
  TO/FROM indicator
  SOG (speed over ground) value according to the 
GPS signal
 The OBS is set to 0 degree when you use the FTA-
750/FTA-550 for the rst time. 
  The last value you have set as the OBS will be dis-
played next time the NAV band screen appears.
  The upside of the compass rose always indicates the 
direction set as the OBS.
  When the OBS is set to a degree within the “TO” 
range relative to the VOR signal, the FTA-750/
FTA-550 displays a degree adding (or subtracting) 
180° to (or from) the VOR signal as the VOR value.
  The SOG is displayed only when the internal GPS 
unit is activated and receives a x in the FTA-750.
Note: 
You may change the COM band receive frequency while 
receiving a VOR signal. If the [ENT] key is pressed 
during the tag name of the VOR station is selected, 
the recall screen listing the frequencies you have used 
will temporarily appear on the display, so that you may 
select a frequency from the list with the [◄] or [►] key 
or change the frequency with the DIAL selector knob.
adVanced operatIon
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
28
Reading the CDI
 If the OBS is set to 50° and your aircraft is at 230° 
from a certain VOR station, for example, you are “on 
course” and the course deviation needle of the CDI 
will be at the center of the compass rose.
10°
0°
20° 30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
150°
160°
170°
180°
190°
200°
210°
220°
240°
250°
260°
270°
280°
290°
310°
320°
330°340° 350°
300°
230°
VOR
Station
Magnetic
North
N
OBS 50°
VOR 230°
113.600
VOL
SOGKT
150
050°
OBS
050°
NAV VOR
TO
KLAX-VOR
N
S
E
W
33
24 21
15
12
30
36
113.600
VOL
OBS
050°
NAV VOR
TO
KLAX-VOR
N
S
E
W
33
24 21
15
12
30
36
050°
FTA-750 FTA-550
 If the OBS is set to 50° but your aircraft is at 236° 
from a certain VOR station, for example, you are “off 
course” and the course deviation needle of the CDI 
will be inside the right half of the compass rose.
10°
0°
20° 30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
150°
160°
170°
180°
190°
200°
210°
220°
230°
240°
250°
260°
270°
280°
290°
310°
320°
330°340° 350°
300°
VOR
Station
Magnetic
North
N
OBS 50°
VOR 236°
113.600
VOL
SOGKT
150
OBS
050°
NAV VOR
TO
KLAX-VOR
N
S
E
W
33
24 21
15
12
30
36
056°
113.600
VOL
OBS
050°
NAV VOR
TO
KLAX-VOR
N
S
E
W
33
24 21
15
12
30
36
056°
FTA-750 FTA-550
adVanced operatIon
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 29
adVanced operatIon
 The course deviation needle moves to the right if 
your aircraft is off course to the left of the OBS, or 
moves to the left if your aircraft is off course to the 
right of the OBS.
 The deviation marks indicate off-course level by 
2 degrees up to 10 degrees per each side. If your 
deviation exceeds 10 degrees, the course deviation 
needle will stay at the position of the fth mark (the 
end of the scale) of the left or right side.
Flying to a VOR station
1.  Set the frequency to the desired VOR station
.
2. Press
 the [◄] or [►] key to 
select 
“OBS” on the 
screen.
113.600
VOL
SOGKT
150
355°
OBS
000°
NAV VOR
FROM
KLAX-VOR
N
S
EW
33
24
21 15
12
30
3
6
113.600
VOL
355°
OBS
000°
NAV VOR
FROM
KLAX-VOR
N
S
EW
33
24
21 15
12
30
3
6
FTA-750 FTA-550
3.  Enter the course to the VOR station with the keypad 
or the 
DIAL knob.
113.600
VOL
SOGKT
150
OBS
175°
NAV VOR
TO
KLAX-VOR
N
S
EW
33
24
21
15
12
30
3
6
175°
113.600
VOL
OBS
175°
NAV VOR
TO
KLAX-VOR
N
S
EW
33
24
21
15
12
30
3
6
175°
FTA-750 FTA-550
4.  Correct your course until the course deviation 
needle on the screen is at the center of the compass 
rose.
113.600
VOL
SOGKT
150
OBS
175°
NAV VOR
TO
KLAX-VOR
S
N
W
E
15
6
333
30
12 21
24
170°
113.600
VOL
OBS
175°
NAV VOR
TO
KLAX-VOR
N
S
EW
33
24
21
15
12
30
3
6
170°
FTA-750 FTA-550
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
30
adVanced operatIon
Flying to a desired course
If you know the direction of your destination from a 
specic VOR  station,  you  may  use  the  CDI to  correct 
your course of ying.
1.  Set the frequency to the desired VOR station
.
2. Press
 the [◄] or [►] key to 
select 
“OBS” on the 
screen.
113.600
VOL
SOGKT
150
355°
OBS
000°
NAV VOR
FROM
KLAX-VOR
N
S
EW
33
24
21 15
12
30
3
6
113.600
VOL
355°
OBS
000°
NAV VOR
FROM
KLAX-VOR
N
S
EW
33
24
21 15
12
30
3
6
FTA-750 FTA-550
3.  Enter the course from the VOR station with the key-
pad or the 
DIAL knob.
4.  Correct your course until the course deviation 
needle on the screen is at the center of the compass 
rose.
113.600
VOL
SOGKT
150
350°
OBS
355°
NAV VOR
FROM
KLAX-VOR
N
S
E
W
33
24
21 15
12
30 3
6
113.600
VOL
350°
OBS
355°
NAV VOR
FROM
KLAX-VOR
N
S
E
W
33
24
21 15
12
30 3
6
FTA-750 FTA-550
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 31
adVanced operatIon
Reception of ILS Signals (except for FTA-450)
When the FTA-750/FTA-550 receive an ILS (instru-
ment landing system) signal, the display will automati-
cally switch to the NAV band screen which shows a 
CDI (course deviation indicator) based on the received 
signal, and “
LOC
”, which indicates that the FTA-750/
FTA-550 are receiving the localizer signal, and “
GS
”, 
which indicates that the FTA-750 is receiving the glide 
slope signal, appear on the display.
108.500
VOL
NAV
LOC
GS
KLAX-RWY07R
N
S
EW
33
24
21 15
12
30
3
6
 
108.500
VOL
NAV
LOC
KLAX-RWY07R
 
FTA-750 FTA-550
  Compass rose
  Course (runway) indicator
  Deviation marks for localizer
  Course deviation needle for localizer
  Height deviation indicator for glide slope
  Deviation marks for glide slope
  In the FTA-750 when the internal GPS unit is not 
activated or cannot receive a x even it is activated, 
or in the FTA-550, the upside of the compass rose 
always indicates the direction of the runway and 
no sign indicating the bearings is displayed on the 
compass rose.
  In the FTA-750 when the internal GPS unit is acti-
vated and receives a x, the compass rose rotates to 
display the approaching course up. The course in-
dicator, deviation marks, and deviation needle also 
rotate to display the runway direction if registered 
in advance.
108.500
VOL
NAV
LOC
GS
KLAX-RWY07R
108.500
VOL
NAV
LOC
KLAX-RWY07R
N
S
EW
33
24
21 15
12
30
3
6
Without GPS With GPS, no GS signal,  
runway direction registered
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OPERATING MANUAL
32
adVanced operatIon
Note: 
You may change the COM band receive frequency 
while receiving an ILS signal. If the [ENT] key is 
pressed while the tag name of the airport is selected, 
the recall screen listing the frequencies you have used 
will temporarily appear on the display, so that you may 
select a frequency from the list with the [◄] or [►] key 
or change the frequency with the DIAL selector knob.
Terminology: 
 The localizer signal guides the approach to the 
runway in horizontal direction.
  The glide slope signal guides the approach to the 
runway in vertical direction. Note that some airports 
are unequipped with the glide slope.
Runway
Course of approach
Guided by 
glide slope
Glide slope
Localizer
Guided by 
localizer
Reading the CDI
 The course deviation needle moves to the right if 
your aircraft is off course to the left of the runway, 
or moves to the left if your aircraft is off course to 
the right of the runway.
 The height deviation indicator moves up if your 
aircraft  ies lower than the ideal altitude, or moves 
down if your aircraft  ies higher than the ideal alti-
tude.
Right
(LOC)
Left
(LOC)
High
(GS)
On course
Low
(GS)
CDI Examples Corresponding to Aircraft Location
(Runway is to be at the back of the screen)
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 33
adVanced operatIon
Split Operation
The split operation feature allows you to transmit a call 
to a ight service station using the COM band frequen-
cies, while receiving a station in the NAV band. VOR 
stations equipped with this capability typically are 
shown, on navigation charts, with the voice calling fre-
quency in parenthesis above the navigation frequency.
Programming a transmit frequency
1. 
Press the 
[MENU] key to display the MENU screen
.
2. Select 
“SETUP” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
3.  Select “COMM SET-
UP” on the screen by 
pressing the [◄] or [►] 
key, and then press the 
[ENT] key.
4. 
Select 
“SPLIT FRE-
QUENCY” on the screen 
by pressing the [◄] or 
[►] key, and then press 
the [ENT] key.
ANL
WEATHER ALERT
SCAN BAND
PTT SCAN STOP
SCAN RESUME
SCAN STOP TYPE
DUAL WATCH FREQ.
SPLIT FREQUENCY
COMM SETUP
5. 
Enter the transmit 
frequency with the 
keypad
.
COMM SETUP
SPLIT FREQUENCY
FINISH
---.---
MHz
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
34
adVanced operatIon
6. 
Select 
“FINISH” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
  The frequency will be 
determined and the dis-
play will return to the 
COMM SETUP menu.
COMM SETUP
SPLIT FREQUENCY
FINISH
122.100
MHz
Note: 
Only the COM band frequencies can be set as the 
transmit frequency.
Activating the split mode
1. 
Press the 
[MENU] key to display the MENU screen
.
2. Select 
“FUNC” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
3.  Select “SPLIT” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
SCAN MEM
DUAL WATCH
SCAN
SPLIT
LOGGER
OFF
OFF
OFF
OFF
OFF
FUNCTION
  If “ON” is displayed in the right hand of “SPLIT”, 
the FTA-750/FTA-550/FTA-450 are already 
in the split mode.
  The display will return 
to the previous screen 
and the “
±
” icon, which 
indicates that the FTA-
750/FTA-550/FTA-
450 are in the split 
mode, will appear on 
the display.
133.800
VOL
  132.400 Las Vega
BUSY
Los Angeles
MR
MEM
±
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 35
adVanced operatIon
Operating in the split mode
  To transmit a voice call during the NAV band recep-
tion, press and hold the PTT switch, and speak into 
the microphone
. 
The COM band screen will be dis-
played with the frequency you have set.
  To exit the split mode, 
select “SPLIT” and 
press the [ENT] key in 
the FUNCTION menu.
SCAN MEM
DUAL WATCH
SCAN
SPLIT
LOGGER
OFF
OFF
OFF
 ON
OFF
FUNCTION
Reception of Weather Channel Broadcasts
- Weather Channels for USA/ Canada only -
The FTA-750/FTA-550/FTA-450 can receive VHF 
weather channel broadcasts, which may assist your ight 
planning. The FTA-750/FTA-550/FTA-450 include 
a special bank capable of storing 10 weather channels, 
which  simplies  access  when  you  are  in  an  unfamiliar 
location.
  To receive weather 
channels, press the 
[MENU] key, select 
“WEATHER” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key. 
  The last channel you 
have tuned will be re-
ceived.
162.475
VOL
  162.550 WX01
  162.400 WX02
  162.475 WX03
  162.425 WX04
  162.450 WX05
  162.500 WX06
BUSY
WX03
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
36
adVanced operatIon
  You can also select a 
weather channel from 
the pre-programmed list 
with the DIAL selector 
knob.
  To  conrm  the  weather 
channel frequency se-
lection, press the [ENT] 
key.
162.475
VOL
  162.550 WX01
  162.400 WX02
  162.475 WX03
  162.425 WX04
  162.450 WX05
  162.500 WX06
BUSY
WX03
  To exit the WX mode, press the [MENU] key, se-
lect the mode other than “WEATHER” on the screen 
by pressing the [◄] or [►] key, and then press the 
[ENT] key.
Weather alert reception
In the event of extreme weather disturbances, such as 
storms and hurricanes, the NOAA (National Oceanic 
and Atmospheric Administration) sends a weather alert 
accompanied by a 1050 Hz tone and subsequent weather 
report on one of the NOAA weather channels. 
When the radio receives the weather alert on the oper-
ating frequency, it displays a warning as below on the 
screen and continues to make alarm sounds until either 
of the keys is pressed.
VOL
BUSY
WX03
Radio received
Weather Alert!
WARNING
Press any keys
162.475
You may enable or disable the alarm function when re-
ceiving the weather alert signal via the COMM SETUP 
menu, if desired. See Page 72 for details.
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl 37
adVanced operatIon
Dual Watch Operation
The dual watch feature automatically checks for activity 
on the P-ch (priority channel) set via the COMM SETUP 
menu while you are operating on another channel. Dur-
ing the dual watch operation, the current channel and the 
P-ch will be polled alternately for a 200 ms interval.
Setting the P-ch
1. 
Press the 
[MENU] key to display the MENU screen
.
2. Select 
“SETUP” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
3.  Select “COMM SET-
UP” on the screen by 
pressing the [◄] or [►] 
key, and then press the 
[ENT] key.
4. 
Select 
“DUAL WATCH 
FREQ.” on the screen by 
pressing the [◄] or [►] 
key, and then press the 
[ENT] key.
EMERGENCY CALL
ANL
WEATHER ALERT
SCAN BAND
PTT SCAN STOP
SCAN RESUME
SCAN STOP TYPE
DUAL WATCH FREQ.
COMM SETUP
5. 
Enter the frequency you 
want to poll, with the 
keypad
.
COMM SETUP
DUAL WATCH FREQ.
FINISH
---.---
MHz
FCC ID: K6650013X20 
IC: 511B-50013X20

FTA-750/FTA-550/FTA-450 OperATing MAnuAl
38
adVanced operatIon
6. 
Select 
“FINISH” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
  The frequency will be 
determined and the dis-
play will return to the 
COMM SETUP menu.
COMM SETUP
DUAL WATCH FREQ.
FINISH
127.600
MHz
Starting the dual watch
1. 
Press the 
[MENU] key to display the MENU screen
.
2. Select 
“FUNC” on the 
screen by pressing the 
[◄] or [►] key, and 
then press the [ENT] 
key.
3.  Select “DUAL WATCH” 
on the screen by 
pressing the [◄] or [►] 
key, and then press the 
[ENT] key.
SCAN MEM
DUAL WATCH
SCAN
SPLIT
LOGGER
OFF
OFF
OFF
OFF
OFF
FUNCTION
  If “ON” is displayed in the right hand of “DUAL 
WATCH”, the FTA-750/FTA-550/FTA-450 
are performing the dual watch.
  The display will return to the previous screen and 
the “
DW
” icon, which indicates that the FTA-750/
FTA-550/FTA-450 are performing the dual watch, 
will appear on the display.
  When the radio encounters a signal in the current 
channel, it still polls both channels alternately with 
longer staying time on the current channel.
  When the radio encounters a signal in the P-ch, the 
radio stays on the P-ch until the signal disappears, 
and the frequency indication on the display blinks.
  After the signal disappears, the dual watch resumes.
FCC ID: K6650013X20 
IC: 511B-50013X20