Ranger Electronic Communications DX-2547 CB Transceiver User Manual 8a

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Document ID	47754
Application ID	h5lO4rykf4cHoF9v4036Mw==
Document Description	8a
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Permanent Confidential	No
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Document Type	User Manual
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Filesize	29.18kB (364795 bits)
Date Submitted	1999-07-14 00:00:00
Date Available	1999-07-09 00:00:00
Creation Date	2001-06-12 04:51:33
Producing Software	Acrobat Distiller 4.0 for Windows
Document Lastmod	2001-06-12 04:51:35
Document Title	8a

FCC ID: C2R-DX—2547
APPENDIX 5
USERS MANUAL
OWNER'S MANUAL (SIXTEEN PAGES) FOLLOWS THIS SHEET
USERS MANUAL
FCC ID: C2R-DX-2547
APPENDIX 5
Galaxy
358 /AM Two Way
Citizen Band Base Station Transceiver
TABLE OF CONTENTS
SPECIFICATIONS ........ v ............... 2
INSTALLATION .......................... 3
OPERATION
Introduction ............................. 6
Conle & Connections .................... 6
Rear Panel Connectors ..................... 1 1
Frequency List . ........................ 12
Precedurc to Receive and Transmit ............ 13
Receiving SSB Signals ..................... 14
SPECIFICATIONS :
GENERAL
Fmgencv Range 26,9650 — 27.4050 MHz ‘
Emission T‘I’Es AM, USE, LSB4
Fguenw Control Phase-locked-Liog SM esizer
qucng Tolerance 0.00594, ’
Fmgoncv Stability 0.003%
Tcmmaluxe Range - 30'C to + ss‘c .
Antenna lm nae 50 Ohms
Antenna Connectors Standard 50-239 type
Meter anmion Meter ill RF Output Power/Antenna SWR
Meter #2 Reociwd signal strength/MOD %.
Vln_p|u Voltage ‘ AC 120mm“;
ENSMITI‘ER
A RFPowcr Output 12W : USB, LSB. 4W:AM
Antenna Connector__ UHF “23, 50 Ohms ___
AM Modulation Up lo 100% Q
Clarifier Rangg i lKHz. b“ 1. _
§purious Emissions -60dB
Carrier Suggnssion 60dB _
RECEIVER
Sensitivity for “MB SIN AM 0.5uV
Sensitivitx for 101113 S/N USE/L513 0,3uV
Adjacent Channel M'oction -60dB -
_LJ___—_____
Ima Rc'ectian Ratio -50dB
AGC Figure of Merit SSE/AM: M for 50mV
for 10:13 Change in Audio Outfit}
Audio Output Power
_@10%'m17 zsw
( Specifications subject to change without notice )
.2.
INSTALLATION :
Location/Connection
The transceiver should be placed in a convenient operating
location close to an AC power outlet and the antenna lead in
cable(s).
The transceiver is attached with the AC power cord set.
Proceed as follows to complete all necessary connections to
the transceiver. '
1. Your transceiver has standard antenna connectors of type
80-239 both located on rear panel; for easy connection to
standard [L259 coax plugs. If the coax antenna cable must be
made longer, use coax cable with impedance of 50 ohms and
use only enough cable to suit your needs. This will insure a
proper impedance match and maximum power transfer from
the transmitter to the antenna.
2. AC Power Operation : Use 120 volts AC.
Noise Interference
There are several kinds of noise interference you may
encounter in base station operation. Some of these noise
sources are; fluorescent buzz, nearby commercial broadcast,
electrical appliance, lawnmower, and electrical storms, etcr
Commercial products are available to reduce interference from
these sources, Consult your dealer or professional amateur
radio supplyshops. " “ " "
Antennas
Antennas are- purchased, separately and include installation
instructions. Numerous types of antennas are available that
range from emphasis on ease of installation to emphasis on
performance. Often the difference in performance between
many of the antenna is modest
1. Vertical Ground Plane Antennas
These are omnidirectional antennas that provide optimum
performance for contacting other fixed stations usin vertical
type antennas in addition to all mobile stations. For medium
long range‘éommunications work.
2. Directional Beam Antennas
Highly efficient and directional antennas generally intended
for fixed—to—fixed very long range com- munications.
Remote Speaker
The external speaker jack (EXT.SP) on the rear panel is used
for remote receiver monitoring. The external speaker should
have 8 ohms impedance and be able to handle at least 3 watts.
When the external speaker is plugged in, the internal speaker is
disconnected.
Note : The PHONE jack on the front panel overrides both
external and internal speakers. When the plug from headphone
is plugged to the PHONE jack, both internal and extemal
speakers are silenced simultaneously.
Public Address _
An external 8 ohm, 3 watt speaker must be connected to the
PA jack located on the rear panel when the transceivef is used
as a public address system. The speaker should be directed
away from the microphone to prevent acoustic feedback.
Physical separation or isolation of the micro- phone and
speaker is important when operating the PA at high output
levels.
OPERATION :
INTRODUCTION
This section explains the basic operating procedures for the
DX 2547 citizen band base station transceiver,
CONTROL & CONNECTIONS
l. PHONE JACK : Used to connect earphone to listening .
2, MICROPHONE JACK ' Used to connect microphone for
voice source.
3. RF POWER CONTROL : This control allows the user to
adjust RF power output ,
4, RF GAIN CONTROL : This control is used to reduce the
gain of the receive amplifier under strong signal conditions .
.5.
5. MIC GAIN CONTROL : This control adjust the
microphone gain in the transmite noise environment or to
maximize talk power .
6. SWR/MOD/PWR SWITCH : This switch controls the
function of the meter during the transmite mode A In the
"SWR" position , the meter indicates the Standing Wave
Ratio (SWR) of your antenna . There are no adjustments
because ‘the SWR circuit in this radio célibrates itself
automatically . When the switch is in the “MOD" position ,
the green scale on the meter indicates your percentage of
modulation A This operates in AM only , not in SSB . When
this switch is in "PWR" position , the meter indicates your
power output .
;,7. DIMMEPTCONTROL : This knob controls the level of
brightness for the meter lamp , the frequency display and
the channel display A
8. TONE CONTROL This control is the level of tone quality.
Tum unclockwise to L0 position , bass is increased and
turn clockwise to HI position , treble is increased .
9. PA/OFF SWITCH : In the "PA" position , your voice will
come out of the speaker that you need to plug into the
"PA SP." jack on the back of the radio . The radio does not
operate when you are in the "PA" mode .
10.ROGER BEEP SWITCH : When this switch is placed in
the RE position , the radio automatically transmits an
audio tone at the end of your transmission . This indicates
the end of your transmission so that people who are having
trouble hearing you will know that you are done speaking A
As a courtesy to others , use the Roger Beep only when
necessary .
11. CHANNEL SELECTOR ; This control is used to select a
desired transmit and receive channel .
12. ANIJOFF SWITCH : In the "AND position , the
Automatic Noise Limiter is activated .
13. MODE SWITCH : This control allows you to select one
of the following operating modes : AM/USB/LSB .
I4"GN'F/OFF SWITCH : In the "GNF“ position , the Galaxy
Noise Filter is engage . This is a special noise filter that
deemphasizes audio high frequency response in order to
increase the signal to noise ratio of weak signals . While
you will notice a dramatic reduction in the "rushing" sound
when this filter is actived , it does not have much effect on
the signal-to-noise ratio strong signal . '
IS CLARJFLER/OFF SWITCH : In the “CLARIFIER”
position , Allows to proceed clarificr tuning I
I6. CLARIFIER CONTROL : Allows variation of the_receiver
operating frequency above and below the selected fre—
quencylAlthough this control is intended primarily to tune
in SSB signal, it may be used to optimize AM/FM signals
as described in the operating procedure paragraphs.
I7. CLARJFIER LED : This LED lights when the clarificr is
on .
18, NB/OFF SWITCH : In the "NB" position , the Noise
Blanker is very effective in eliminating repetitive impluse
noise such as ignition interference .
19, VOLUME CONTROL : Turn clockwise to set desired
listening level .
20, SQUELCH CONTROL : This control is used to control
or eliminate receiver background noise intheabsence of
incoming signal, For maximum receiver sensitivity, it is
desired that the control be adjusted only to the point
where the receiver background noise is eliminated. Tut-n
fully counterclockwise, then slowly clockwise until the
receiver noise disappears. Any signal to be received must
now be slightly stronger than the average received noise.
Further clockwise rotation will increase the threshold level
which a signal must overcome in order to be heard. Only
strong signal will be heard at a maximum clockwise setting.
2]. TALK BACK CONTROL : Tum clockwise to apply the
Talkback circuit on . Adjust this knob for desired volume of
Talkback . This is used to monitor your own voice . For
example , you could use this feature to compare different
microphones .
22. POWER ON/OFF CONTROL : Push on to apply power
to the unit .
23A FRONT PANEL METER : The From Panel Meter allows
the user to monitor signals strength , RF output power ,
SWR level and the AM Moudiation level .
24. RX/TX LED : This LED is green during receive and red
during transmit .
25. CHANNEL DISPLAY : The channel display indicates the
current selected channel 4
26. SWR ALERT LED : This LED lights red when your SWR
is higher than about 3:1 . This is not an exact indicator of
3:1 SWR , but it is an indication that you should check your
SWR reading .
27, GNF LED : This LED lights red when the GNP is on .
. _9_
28, RB. LED : This LED lights green when the Roger Beep is
on .
29. FREQUENCY COUNTER : This display indicates the '
frequency of the selected channel .
30. PA LED : This LED lights red when radio in the PA
mode.
31. ANL LED : ThisLED lights red when the ANL in on .
32. USB LED : This LED lights red When radio in the USB
mode .
33. AM LED : ThisLED lights red when radio in the AM
mode,
34. NB LED : This LED lights red when the NB is on .
35A LSB LED : This LED lights red when radio in the LSB
mode.
36. CHQ/CH19 SWITCH : This control is used to select CH9
or CH19 instantly . When placed in the "NORMAL"
position , allows to select a desired transmit and receive of
normal channel .
.10.
L.
REAR PANEL CONNECTOR
1. AC POWER ; Connects to AC power outlet for AC
mains supply.
2. FUSE : Accommodates a fixse for AC input circuit
protection use 125V 7A fuse for replacement.
3. DC POWER : This accepts 13.8V DC power cable with
builtwin fuse . The power cord provided with the radio has a
fblack and red wire . The black goes to negative and the red
‘goes to positive .
4. -AC/DC POWER SELECTOR : This control is used to
select a desired power supply of AC power or DC power ,
5. ANTENNA: This jack accepts 50 ohm coaxial cable
with a PL-259 type plug.
6. PA SP : This jack is for PA operation. Before operating ,
you must first connect a PA speaker(8 ohm 4w) to this
jack.
7, EXTERNAL SPEAKER: This jackacceptshosohm, 5
watt external speaker. When the external speaker is
connected to this jack , the built-in speaker will be
disabled. ' ’
t. . ",11'
FREQUENCY LIST "
Channel Chamchrequgncy Channel ChannelFrequency
771143“); «2594332513,
.'v
5 1 26.965 MHz 21 27.215 MHz
5 2 26.975 MHz 22 27.225 MHz
1 3 26.985 MHz 23 27.235 MHz
5 4 27.005 MHz 24 27.245 MHz
1} 5 27.015 11-512 25 27.255 MHz“
3 5 27.025 MHz 26 27,265 MHz
g 7 27.035 MHz 27 27.275 MHz
' x 27.055 MHz . 28 27.235 MHz
3 9 27.065 MHz 29 27.295 MHz
g 10 27.075 MHZ 30 27.305 MHZ
“g 11 27.035 MHz 31 27.315 MHz
3 12 27.105 MHz 32 27.325 MHz
13 27115an 33 27.335MHz
14 27.125 MHz 34 27,345 MHz
3 15 27.135 MHz 35 27.355 MHz
g 16 27.155 MHz 36 27.365 MHz
17 27.165 MHz 37 27.375 MHz
113 27.175 MHz 33 27.385 MHz
19 27.185 MHZ 39 27.395 MHz
20 27.205 MHz 40 27.405 MHz
-12.
ilk-“Pi”
PROCEDURE TO RECEIVE AND TRANSMIT
A. MICROPHON
The receiver and transmitter are controlled by the push -‘to - talk
switch on the microphone . Press the switch and transmitter is
activated , release switch to receive . When transmitting, hold the
microphone two inches from the mouth and speak clearly in a
normal voice .This transceiver comes complete with a" low
impedance dynamic microphone.
B. PROCEDURE T0 REECEIVE
1. Be sure that power soourc , microphone and antenna are
connected ‘to the proper connectors before going to th next
step.
Press the POWER button on transceiver for power switch on.
Set the VOLUNH-E for a comfortable listening level.
Set the mode switch of AM/USB/LSB to the desired mode.
Listen to the background noise from the speaker. tum the SQ
knob slowly clockwise until the noise just disappears. Leave the
control at this setting. this SQUELCH is now properly adjust ,
The receiver will remain quiet until a signal is atuaIIy received ,
Do not advance the control] too far or some of the weake
signals will not be heard.
Set the CHANNEL selector switch to the desired channel.
Set the RF gain control fully clockwile for maxlmum receive
gain.
r'F"
C. RF POWER CONTROL
This feature allows for the adjustment of the RF power output
continuously over the range 1 to 4 watts in AM and 4 to 12 Watts
in USB or LSB.
.13.
n, PROCEDURE TO TRANSMIT
1. Select the desired channel of transmission.
. Set the MIC gain control flilly clockwise.
3. If the channel is clear, depress the push-to-talk switch on
the microphone and speak in normal voice.
RECEIVING SSB SIGNALS
be detected. An SSB signal may be recognized while in the
AM mode by its characteristic "Donald Duck" sound and the
inability of4he detector to produce an intelligible output. The
USB and LSB modes will detec upper sideband and lower
sideband respectively, and standard AM signals,
be received with 100% of the $58 signal.
.14.
""
An SSB signal may be received only the listening receive is
functioning in the same mode. In other words, an upper
sideband (USB) may be made intelligible only if the receiver is
functioning in the USB position.
If a lower sideband LSB) signal is heard when the receiver is
in the USB mode, no amount of tuning will make the signal
intelligible The reason for this may be understh if you
consider that when the modulation is applied to the
transmitter’s microphone in the USB mode, the transmitter
output frequency is increased whereas in the LSB mode the
transmitter's output frequency is decreased.
The result in listening to the receiver is that when the MODE
switch is in the proper position (either USB or LSB), a ture
reproduction of a single tone of modulation will result, and if
the tone iis increased in frequency (such as a low-pitched
whistle or a high-pitched whistle) you will hear the increase in
tone of a whistle applied to the transmitter will cause a
decrease in the resultant tone from the receiver.
Thus when a voice is used in place of a whistle or tone, in the
proper listening mode the voice will be received correctly
whereas in the incorrect mode, the voice will be translated
, backwards and cannot be made intelligible by the CLARIFIER
control When listening to an AM transmission, a correct
sideband is heard in either mode since both upper and lower
side bands are received.
Once thr desired SSB mode has been selected, fi'equency
adjustment may be necessary in order-to-make the incominng
signal intelliginble, The ‘CLARLFIER control allows the
operator to vary the frequency above or below. the exact
frequency of the channelizlf the sound of the incoming signal is
high or low pitched, adjust the operation of the CLARIFIER.
Consisder it as performing the same fimction as a phonograph
speed control. When the speed is set too high, voices will be
high-pitched and it' set to low, voice will be low-pitched. Also,
there is only one correct speed that will make a particular
record produce the same sound that was recorded, If the
record is played on a turntable that is rotated in the wrong
direction (oppsite sideband) no amount ofi‘ spwd control
(CLARJFIER) will produce an intelligible sound.
An AM signal received while listening in one of the SSB
modes will produce a steady tone (carrier) in addition to the
intelligible, unless the ssh receiver is tuned to exactly the same
frequency by the CLARIFIER control. For simplicity, it is
recolruncnded that the AM modes be used to listen to AM
signals,
BE SURE TO VISIT OUR WEB SITE AT:
www.Galaxyradios.com
-16-

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Create Date                     : 2001:06:12 04:51:33
Producer                        : Acrobat Distiller 4.0 for Windows
Modify Date                     : 2001:06:12 04:51:35-04:00
Page Count                      : 18

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