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DX-939
Owner's manual

Galaxy DX-939 Owner's manual

Manual is about: Solid State Citizens Band AM Mobile Transceiver With Blue Illuminated Lite

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DX-939

Solid State Citizens Band

AM Mobile Transceiver

With Blue Illuminated Lite

OWNERS MANUAL

- 1 -

TABLE OF CONTENTS

PAGE

CHAPTER 1

Specifications

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHAPTER 2

Installation

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting The Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ignition Noise Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tuning The Antenna For Optimum SWR . . . . . . . . . . . . . . . . . . . . . . . . . .

External Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Public Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHAPTER 3

Operation

Control Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Procedure to Receive and Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiving SSB Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Alternate Microphone and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance And Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A Few Rules That Should Be Obeyed . . . . . . . . . . . . . . . . . . . . . . . . . . . .

How Your CB Can Serve You . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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Summary of DX-939

Page 1
Dx-939 solid state citizens band am mobile transceiver with blue illuminated lite owners manual - 1 - table of contents page chapter 1 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 chapter 2 installation location . . . . . . . . . . ...
Page 2
- 2 - chapter 1 specifications general model dx-9 3 9 channels 40 frequency range 26.965 ~ 27.405 mhz emission am frequency control phase-lock-loop (pll) synthesizer frequency stability 0.001% temperature range -30 ° c to +50 ° c input voltage 13.8 vdc antenna impedance 50 ohms speaker impedance 8 o...
Page 3
- 4 - ignition noise interference use of a mobile receiver at low signal levels is normally limited by the presence of electrical noise. The primary source of noise in automobile installation is from the generator and ignition system in the vehicle. Under most operating conditions, when signal level...
Page 4
- 6 - if you’re having difficulties in adjusting your antenna, check the following: a. All doors must be closed when adjusting the antenna b. Make sure the antenna base is grounded. C. Check your coaxial cable routing (it may be pinched when routed into the car) d. Try a different location in your c...
Page 5
- 8 - 5. Dimmer control : this knob controls the level of brightness for the meter lamp and the channel display. Also, pushing this knob turns the meter lamp and the display led's on and off. 6. Rf power control : this control allows the user to adjust rf power output. 7. Channel selector : this con...
Page 6
- 10 - rear panel connector 1. Antenna : this antenna jack accepts 50 ohms coaxial cable with a pl-259 type plug. 2. Power : this accepts 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 to negative and red goes to positive. 3. ...
Page 7
- 12 - procedure to receive and transmit a. Microphone the receiver and transmitter are controlled by the push-to-talk switch on the microphone. Press the switch and the transmitter is activated, release switch to receive. When transmitting, hold the microphone two inches from the mouth and speak cl...
Page 8
- 14 - 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 the connections. Keep the exposed wire lengths to a minimum to avoid shorting when the microphone plug is reassembled. Fig....
Page 9
- 16 - 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 ...
Page 10
- 18 - use ch 9 for emergency messages only the fcc gives the following examples of permitted and prohibited types of communications for use in an emergency. These are guidelines and are not intended to be all inclusive. Permitted example message yes “a tornado sighted six miles north of town. No “t...
Page 11
- 20 - 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 ...