TABLE OF CONTENTS

PAGE
CHAPTER 1

DX 919
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

CHAPTER 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installing The Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Ignition Noise Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
External Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Public Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

CHAPTER 3
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Procedure to Receive and Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Alternate Microphone and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Two Way
Maintenance And Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
A Few Rules That Should Be Obeyed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Citizens Band Mobile Transceiver How Your CB Can Serve You . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Use Channel 9 For Emergency Message Only . . . . . . . . . . . . . . . . . . . . . .
14
15

OWNERS MANUAL
-1-
 CHAPTER 1 SPECIFICATIONS CHAPTER 2 INSTALLATION

GENERAL INSTALLING THE RADIO

Model DX 919 Choose a convenient location for operation that does not interfere with driver or
Channels 40 passenger. This radio is supplied with a universal mounting bracket. When mounting
the bracket and radio to your car, make sure it is mechanically strong. Also, provide a
Frequency Range 26.965 ~ 27.405 MHz good electrical grounding connection to the chassis of vehicle. Proceed as follows to
Emission AM install the radio.
Frequency Control Phase-Lock-Loop (PLL) Synthesizer
Frequency Stability 0.001% 1. Locate a convenient area in your vehicle for the installation of the radio. Hold the
mounting bracket with the radio in the location where the radio is to be installed.
Temperature Range -30°C to +50°C
Make sure nothing will interfere with either the radio or the mounting bolts. Mark
Antenna Impedance 50 Ohms and then drill holes for the mounting bracket.
Antenna Connectors Standard SO-239 type
Input Voltage 13.8V DC 2. Most radio antennas come equipped with a PL-259 plug. Connect this plug to the
Size 7 1/4” (W) x 9” (D) x 2 1/4” (H) ANT. Jack in the rear of the radio.
Weight 3.4 lbs. 3. Extending from the rear of the radio is a fused red and black wire for the DC
connections to the vehicle’s electrical system. For best performance, it is strongly
TRANSMITTER recommended that the red lead be taken directly to the positive terminal on the
vehicle’s battery and the black lead be connected to the nearest chassis ground.
RF Power Output AM: 4 watts
(Note: This radio is designed for vehicles with negative ground systems.)
Spurious Emission > -60 dB
Unwanted Sideband -50 dB Connections should be made using appropriate “crimp on” lugs of a size large
Audio Distortion < 5% enough to make good contact with the bolt used to fasten to the battery and the
Frequency Response 300 to 2500 Hz chassis ground. It is a good safety idea to install a second fuse that would provide
protection in case the red wire was to “fray” or get pinched and short to the body
Microphone Dynamic
of the vehicle, somewhere between the battery and the radio.

RECEIVER Poor power connections cause supply voltage drops that can substantially
Sensitivity for 10 dB (S+N)/N < 0.5 uV decrease the performance of your radio. A good DC connection is probably one of
the most important things for getting the best transmitter performance and in some
Squelch Sensitivity < 0.5 uV cases, least receiver noise.
Selectivity > -50 dB
Image Rejection > 60 dB 4. Mount the microphone bracket near the radio in an easily accessible spot using the
Hum & Noise > -40 dB two screws provided.
AGC Figure of Merit 50 mV for 10 dB Change in Audio Output
Audio Power Output 2.5W @ 10% Distortion
Audio Response 300 to 2500 Hz
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)

-2- -3-
IGNITION NOISE INTERFERENCE CHAPTER 3 OPERATION
With weak signals, you may experience interference of the signal by background
noise. This radio has NB and ANL circuits which will help reduce background noise
from sources such as your ignition system. However, background electrical noise may CONTROL FUNCTIONS
come from several sources and all noise may not be eliminated. With extremely weak FRONT PANEL
signals, you can operate this radio with the engine turned off, which should improve
reception. If the ignition noise level is too high to allow proper operation under most
conditions, you should have your installation of the radio checked by a qualified 8 9 10 11 12 13 14 15
technician.
RF GAIN DIMMER
ANTENNA 7 9 +20
SWR NB/ANL
TALKBACK
HI

S 5 +40 dB RX/TX
This radio has a jack in the rear for a standard PL-259 antenna plug. If you are 1
3
20
40
60 80
100%
+6
0 CB OFF

looking for the most range for your transmission, use a vertically polarized, quarter- MOD
PWR 0
1
3 6

3
12
18
MA
X PWR PA LO SWR
2
1.5
wave length antenna. If antenna height is a problem, you may use a shorter, loaded- SWR 1

VOL SQ MIC GAIN POWER

type whip antenna although you can expect some loss of transmission range.
To improve performance, your antenna should be matched to your radio. Your
antenna can be adjusted so that it matches your radio. DX 919 OFF

EXTERNAL SPEAKER
The external speaker jack (EXT SP.) on the rear panel is used for remote receiver
1 2 3 4 5 6 7
monitoring. The external speaker should have 8 ohms impedance and be able to
handle at least 4 watts. When the external speaker is plugged in, the internal speaker is
disconnected.
1. MICROPHONE JACK: Used to connect microphone for voice source.
PUBLIC ADDRESS
To use the Public Address (PA) function, first connect an external speaker to the PA. 2. SQUELCH CONTROL: This knob is used to eliminate background noise being
SP. Jack on the rear of the radio. See the above specifications for a proper external heard through the receiver, which can be disturbing when no transmissions are
speaker. Keep the speaker away from the microphone to avoid acoustic feedback. being heard through the receiver. To use this feature, turn the knob fully
counterclockwise and then turn clockwise slowly until the background noise is
just eliminated. Further clockwise rotation will increase the threshold level which
a signal must overcome in order to be heard. Only strong signals will be heard at a
maximum clockwise setting.

3. ON/OFF VOLUME CONTROL: This knob controls the volume and power to
the radio. To turn radio on, rotate the knob clockwise. Turning the knob further
will increase the volume of the receiver.

4. MIC GAIN CONTROL: Adjusts the microphone gain in the transmit and PA
modes. This controls the gain to the extent that full talk power is available several
inches away from the microphone. In the Public Address (PA) mode, the control
functions as the volume control.

5. POWER CONTROL: This control allows the user to adjust RF power output.

-4- -5-
6. SWR LED: This LED lights red when your SWR is higher than about 3:1. This is REAR PANEL
not an exact indicator of 3:1 SWR, but it is an indication that you should check
your SWR reading.

7. CHANNEL SELECTOR: This control is used to select the desired transmit and 3 5 4
receive channel.

8. FRONT PANEL METER: The front panel meter allows the user to monitor This device complies with part 15 of the FCC Rules. Operation is subject
PA SP. EXT SP.

incoming signal strength, RF output power, SWR level and AM modulation level. to the condition that this device does not cause harmful interference.
ANT
Service Manual at www.GalaxyRadios.com
F.C.
9. RF GAIN CONTROL: This control is used to reduce the gain of the RF (receive)
amplifier under strong signal conditions. MODEL NO. : DX 919 FCC ID : MEE − DX − 919 - DC 13.8V +
AM 40 CH
CB TRANSCEIVER

10. DIMMER CONTROL: This knob controls the level of brightness for the meter DATE OF MFG.: SERIAL NO. :

lamp and channel display.

11. SWR/MOD/PWR SWITCH: This switch controls the function of the meter
during the transmit mode. In the “SWR” position, the meter indicates the Standing 1 2
Wave Ratio (SWR) of your antenna. There are no adjustments because the SWR
circuit in this radio calibrates itself automatically. When the switch is in the
“MOD” position, the green scale on the meter indicates your percentage of
modulation in the AM mode only. They are most accurate when testing at 1. ANTENNA: This jack accepts a 50-ohm coaxial cable with a PL-259 type plug.
maximum power output. When this switch is in “PWR” position, the meter
indicates your power output. 2. DC POWER: This jack accepts the 13.8V DC power cable with built-in fuse.
The power cord provided with the radio has a black and red wire. The black goes
12. NB-ANL/CB/PA SWITCH: When the switch is in the NB/ANL position, the to negative and red goes to positive.
Noise Blanker (NB) and Automatic Noise Limiter (ANL) circuits are activated.
The Noise Blanker is very effective in eliminating repetitive impulse noise such 3. PA SP: This jack is for PA operation. Before operating, you must first connect a
as ignition interference. In the CB position, the PA function is disabled and the PA speaker (8 ohms, 4W) to this jack.
radio will transmit and receive on the speaker that is connected. In the PA position,
the radio acts as public address amplifier. Your voice will come out of the speaker 4. EXT. SP: This jack accepts a 4 to 8 ohm, 5-watt external speaker. When the
that is plugged into the PA. SP. jack on the rear panel. The radio does not operate external speaker is connected to this jack, the built-in speaker will be disabled.
when you are in the PA mode.
5. F.C.: This jack is used to connect the optional Galaxy FC347 six-digit frequency
13. TALKBACK SWITCH: This feature is used to monitor your own voice. For counter. All connections, including DC power, are provided to the FC347 through
example, you could use this feature to compare different microphones. HI is high this jack.
volume. LO is low volume. The Talkback circuit is off when the switch is in the
OFF position.

14. RX/TX LED: This LED is green during receive and red during transmit.

15. CHANNEL DISPLAY: The channel display indicates the current selected
channel.

-6- -7-
FREQUENCY CHART PROCEDURE TO RECEIVE AND TRANSMIT

Channel Channel Frequency Channel Channel Frequency A. MICROPHONE

The push-to-talk switch on the microphone controls the receiver and transmitter.
1 26.965 MHz 21 27.215 MHz Press the switch and the transmitter is activated, release switch to receive. When
transmitting, hold the microphone two inches from your mouth and speak clearly in a
2 26.975 MHz 22 27.225 MHz normal voice. This transceiver comes complete with a low impedance dynamic
microphone.
3 26.985 MHz 23 27.255 MHz
4 27.005 MHz 24 27.235 MHz B. PROCEDURE TO RECEIVE
1. Be sure that power source, microphone and antenna are connected to the proper
5 27.015 MHz 25 27.245 MHz connectors before going to the next step.

6 27.025 MHz 26 27.265 MHz 2. Turn VOL knob clockwise to apply power to the radio.
7 27.035 MHz 27 27.275 MHz
3. Set the VOL for a comfortable listening level.
8 27.055 MHz 28 27.285 MHz
4. Set the MODE switch to the desired mode.
9 27.065 MHz 29 27.295 MHz
5. Listen to the background noise from the speaker. Turn the SQ knob slowly
10 27.075 MHz 30 27.305 MHz clockwise until the noise just disappears. The SQ is now properly adjusted. The
receiver will remain quiet until a signal is actually received. Do not advance the
11 27.085 MHz 31 27.315 MHz
control too far or some of the weaker signals will not be heard.
12 27.105 MHz 32 27.325 MHz
6. Set the CHANNEL selector switch to the desired channel.
13 27.115 MHz 33 27.335 MHz
C. PROCEDURE TO TRANSMIT
14 27.125 MHz 34 27.345 MHz 1. Select the desired channel of operation.
15 27.135 MHz 35 27.355 MHz
2. Set the MIC GAIN control fully clockwise.
16 27.155 MHz 36 27.365 MHz
3. If the channel is clear, depress the push-to-talk switch on the microphone and
17 27.165 MHz 37 27.375 MHz speak in a normal voice.
18 27.175 MHz 38 27.385 MHz

19 27.185 MHz 39 27.395 MHz

20 27.205 MHz 40 27.405 MHz

-8- -9-
ALTERNATE MICROPHONES AND INSTALLATION Before beginning the actual wiring, read carefully the circuit and wiring information
provided with the microphone you select. Use the minimum heat required in soldering
For best results, the user should select a low-impedance dynamic type microphone the connections. Keep the exposed wire lengths to a minimum to avoid shorting when
or a transistorized microphone. Transistorized type microphones have low output the microphone plug is reassembled.
impedance characteristics. The microphones must be provided with a four-lead cable.
The audio conductor and its shielded lead comprise two of the leads. The third lead is
for transmit control and fourth is for receiving control.

The microphone should provide the functions shown in the schematic below.

4 WIRE MIC CABLE

Pin Number Mic Cable Lead

1 Audio Shield
2 Audio Lead
3 Transmit Control
4 Receive Control

Fig. 2 Microphone plug wiring

To wire the microphone cable to the plug provided, proceed as follows:

Fig. 1 Your transceiver microphone schematic.
1. Remove the retaining screw.

If the microphone to be used is provided with pre-cut leads, they must be revised as 2. Unscrew the housing from the pin receptacle body.
follows.
3. Loosen the two cable clamp retainer screws.
1. Cut leads so that they extend 7/16" beyond the plastic insulating jacket of the
microphone cable. 4. Feed the microphone cable through the housing, knurled ring and washer as
shown Figure 2.
2. All leads should be cut to the same length. Strip the ends of each wire 1/8" and tin
the exposed wire.

- 10 - - 11 -
5. The wires must now be soldered to the pins as indicated in the above wiring tables. 9. The two cable clamp retainer screws should now be tightened to secure the
If a vise or clamping tool is available it should be used to hold the pin receptacle housing to the microphone cord. If the cutting directions have been carefully
body during the soldering operation, so that both hands are free to perform the followed, the cable clamp should secure to the insulation jacket of the microphone
soldering. If a vise or clamping tool is not available, the pin receptacle body can cable.
be held in a stationary position by inserting it into the microphone jack on the
front panel. The numbers of the microphone plug are shown in Fig. 3, as viewed 10. Upon completion of the microphone plug wiring, connect and secure the
from the back of the plug. Before soldering the wire to the pins, pre-tin the wire microphone plug in the transceiver.
receptacle of each pin of the plug.

MAINTENANCE AND ADJUSTMENT

This transceiver is specifically designed for the environment encountered in mobile
installations. The use of all solid state circuitry and its light weight result in high
reliability. Should a failure occur, however, replace parts only with identical parts. Do
not substitute.

NOTE
If the performance described in the OPERATION section is not
Fig. 3 Microphone plug pin numbers viewed from rear of pin receptacle. obtained, review the operating instructions to insure that proper
procedures were followed.
6. Be sure that the housing and the knurled ring of Figure 2 are pushed back onto the
microphone cable before starting to solder. If the washer is not captive to the pin
receptacle body, make sure that it is placed on the threaded portion of the pin
receptacle body before soldering. FCC WARNING
All transmitter adjustments other than those provided on front
7. If the microphone jack is used to hold the pin receptacle during soldering panel by the manufacturer must be made by or under the
operation, best results are obtained when the connections to pin 1 and 3 are made supervision of the holder of an FCC issued general radio
first and then the connections to pins 2 and 4. Use a minimum amount of telephone operator’s license.
soldering and be careful to prevent excessive solder accumulation on pins, which
could cause a short between the pin and the microphone plug housing.

8. When all soldering connections to the pins of the microphone are completed, push
the knurled ring and the housing forward and screw the housing onto the threaded
portion of the pin receptacle body. Note the location of the screw clearance hole
in the plug housing with respect to the threaded hole in the pin receptacle body.
When the housing is completely threaded into the pin receptacle body, a final
fraction of a turn either clockwise or counterclockwise may be required to align
the screw hole with the threaded hole in the pin receptacle body. When these are
aligned, the retaining screw is then screwed into place to secure the housing to the
pin receptacle body.

- 12 - - 13 -
A FEW RULES THAT SHOULD BE OBEYED USE CHANNEL 9 FOR EMERGENCY MESSAGES ONLY
1. You are not allowed to carry on a conversation with another station for more than The FCC gives the following examples of permitted and prohibited types of
five minutes at a time without taking a one-minute break, to give others a chance communications for use in an emergency. These are guidelines and are not intended to
to use the channel. be all inclusive.

2. You are not allowed to blast others off the air by over-powering them with Permitted Example Message
illegally amplified transmitter power, or illegally high antennas.
YES “A tornado sighted six miles north of town.
3. You can’t use the transceiver to promote illegal activities.
NO “This is observation post number 10. No tornado
4. You are not allowed to use profanity. sighted.

5. You may not play music in your transceiver. YES “I am out of gas on interstate 95”

6. You may not use your transceiver to sell merchandise or professional services. NO “I am out of gas in my driveway”

YES “There is a four-car collusion at exit 10 on the

Beltway, send police and ambulance.”
HOW YOUR CB CAN SERVE YOU
NO “Traffic is moving smoothly on the Beltway”
1. Warn of traffic tie-ups ahead.
YES “Base to Unit 1, the weather Bureau has just
2. Provide weather and road information. issued a thunder storm warning. Bring the sailboat
into port.”
3. Provide help fast in event of emergency or breakdown.
NO “Attention all motorists. The weather Bureau
4. Suggest good spots to eat and sleep. advises that the snow tomorrow will accumulate 4
to 6 inches.
5. Make long trips more interesting, and help keep you awake.
YES “There is a fire in the building on the corner of 6th
6. Provide direct contact with your office or home. and Main Streets.”
7. Make friends for you as you travel. NO “This is Halloween patrol unit number 3.
Everything is quiet here.”
8. Provide “local information” to find your destination.

9. Help law enforcement officers by reporting drunk and reckless drivers.

- 14 - - 15 -
MEMO MEMO
MEMO MEMO
 Two Year Warranty
This new Galaxy radio is covered by a two year limited warranty. Here are the details.

• All of our Galaxy radio model numbers begin with the letters “DX” and are
covered by our Limited Two Year Parts and Labor Warranty.

• “Limited” means that we will repair problems caused by factory defects or

normal use at no charge. Work performed by qualified technicians which did not
cause any damage to the radio will not void the warranty and will be left intact.
Problems caused by unqualified technicians or operator abuse can also be
repaired, but there will be a charge.

• The warranty period begins when the radio is first purchased. However, in the
event that the dated sales receipt has been lost or the radio was purchased used,
our radios are still covered for 26 months from the date of manufacture based on
the serial number. Our warranty comes with the radio and remains valid even if
you sell the radio to someone else. Refurbished radios are distinguished from
new radios by using the letter “R” as the first character of the serial number.

There are no off-site “Factory Authorized” service centers for Galaxy “DX” models. All
warranty work must be done at our facility.

For maximum convenience, these radios may be shipped directly to us for repair after
obtaining a Repair Authorization Number (RAN). This RAN may be obtained from our
website or by calling our Service Department at 760-480-8800 between 10:00 AM
and 4:00 PM Pacific Time. The RAN must be written below your return address on the
outside of the shipping box. Boxes, which arrive without an RAN, will be refused, and
the shipping company will return the unopened box to you. Be sure to have a pen
and paper ready along with the serial number of your radio before calling. We will
give you the RAN and our shipping address over the phone.

When you send your radio, please include a copy of the sales receipt and a note with
a detailed description of the symptoms, especially if they are intermittent. This will
help our technicians locate the problem so we don’t waste time sending the radio
back and forth. If possible, please include a daytime phone number in case our
technicians have any questions. Do not send your bracket, power cord or microphone
unless we ask you for these items during our phone conversation.

You are responsible for getting the radio safely to us. (We suggest using United
Parcel Service - UPS.) You must pay to ship the radio to us, and we will pay to ship
the radio back to you. Since we use UPS and they do not ship to Post Offices boxes,
please provide us with a street address for the return of your radio. Be sure to print
clearly.

We appreciate your choosing a Galaxy radio and we will make every effort to get you
back on the air as soon as possible.

Be sure to visit our web site at:

Printed in China
www.GalaxyRadios.com. AT0919011A

-1- -2-