background image

- 8 - 

 

REAR PANEL 

 
 

 
 
 

1. ANTENNA:

 This jack accepts a 50 ohm coaxial cable with a PL-259 type plug. 

 

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 
to negative and red goes to positive. 

 

3. PA 

SP:

 This jack is for PA operation. Before operating, you must first connect a 

PA speaker (8 ohms, 4W) to this jack. 

 

4. EXT. SP:

 This jack accepts a 4 to 8 ohm, 5 watt external speaker. When the 

external speaker is connected to this jack, the built-in speaker will be disabled. 

 

5. F.C

.: This jack is used to connect the optional Galaxy FC347 six-digit frequency 

counter. All connections, including DC power, are provided to the FC347 through 
this jack. 

 

- 6 - 

MODEL NO. : DX 979

CB TRANSCEIVER

AM/SSB 40 CH

DATE OF MFG.: 

FCC ID : MEE − DX − 979

SERIAL NO. : 

1

ANT

2

- DC 13.8V +

EXT SP.

F.C.

PA SP.

3

4

5

This device complies with part 15 of the FCC Rules.

Operation is subject 

to the condition that this devicedoes not cause harmful interference.

Service Manual at  www.GalaxyRadios.com

- 9 - 

 

FREQUENCY CHART

 

 

Channel    Channel Frequency 

Channel    Channel Frequency 

  26.965 MHz 

21 

  27.215 MHz 

  26.975 MHz 

22 

  27.225 MHz 

  26.985 MHz 

23 

  27.255 MHz 

  27.005 MHz 

24 

  27.235 MHz 

  27.015 MHz 

25 

  27.245 MHz 

  27.025 MHz 

26 

  27.265 MHz 

  27.035 MHz 

27 

  27.275 MHz 

  27.055 MHz 

28 

  27.285 MHz 

  27.065 MHz 

29 

  27.295 MHz 

10 

  27.075 MHz 

30 

  27.305 MHz 

11 

  27.085 MHz 

31 

  27.315 MHz 

12 

  27.105 MHz 

32 

  27.325 MHz 

13 

  27.115 MHz 

33 

  27.335 MHz 

14 

  27.125 MHz 

34 

  27.345 MHz 

15 

  27.135 MHz 

35 

  27.355 MHz 

16 

  27.155 MHz 

36 

  27.365 MHz 

17 

  27.165 MHz 

37 

  27.375 MHz 

18 

  27.175 MHz 

38 

  27.385 MHz 

19 

  27.185 MHz 

39 

  27.395 MHz 

20 

  27.205 MHz 

40 

  27.405 MHz 

 

Summary of Contents for DX 979

Page 1: ...io 3 Ignition Noise Interference 4 Antenna 4 External Speaker 4 Public Address 4 CHAPTER 3 Operation 5 Front Panel 5 Rear Panel 8 Frequency Chart 9 Procedure to Receive and Transmit 10 Receiving SSB Signals 11 Alternate Microphone and Installation 13 Maintenance And Adjustment 16 A Few Rules That Should Be Obeyed 17 How Your CB Can Serve You 17 Use Channel 9 For Emergency Message Only 18 ...

Page 2: ...nstallation of the radio Hold the mounting bracket with the radio in the location where the radio is to be installed Make sure nothing will interfere with either the radio or the mounting bolts Mark and then drill holes for the mounting bracket 2 Most radio antennas come equipped with a PL 259 plug Connect this plug to the ANT Jack in the rear of the radio 3 Extending from the rear of the radio is...

Page 3: ...en the external speaker is plugged in the internal speaker is disconnected PUBLIC ADDRESS To use the Public Address PA function first connect an external speaker to the PA SP Jack on the rear of the radio See the above specifications for a proper external speaker Keep the speaker away from the microphone to avoid acoustic feedback 5 CHAPTER 3 OPERATION CONTROL FUNCTIONS FRONT PANEL 1 MICROPHONE JA...

Page 4: ...ows tuning of the receive frequency above or below the channel frequency by up to 1 0KHz Although this control is intended primarily to tune in SSB signals it may be used to optimize AM signals 14 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 Wave Ratio SWR of your antenna There are no adjustments bec...

Page 5: ...EL NO DX 979 CB TRANSCEIVER AM SSB 40 CH DATE OF MFG FCC ID MEE DX 979 SERIAL NO 1 ANT 2 DC 13 8V EXT SP F C PA SP 3 4 5 This device complies with part 15 of the FCC Rules Operation is subject to the condition that this devicedoes not cause harmful interference Service Manual at www GalaxyRadios com 9 FREQUENCY CHART Channel Channel Frequency Channel Channel Frequency 1 26 965 MHz 21 27 215 MHz 2 ...

Page 6: ...will detect upper side band and lower side band respectively and standard AM signals SSB reception differs from standard AM reception in that an SSB receiver does not require a carrier or opposite side band to produce an intelligible signal A single side band transmitted signal consists only of the upper or the lower side band and no carrier is transmitted The elimination of the carrier from the A...

Page 7: ...o amount of speed control CLARIFIER 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 intelligence unless the SSB receiver is tuned to exactly the same frequency by the CLARIFIER control For simplicity it is recommended that the AM modes be used to listen to AM signals 13 ALTERNATE MICROPHONES AND ...

Page 8: ...the plug Fig 3 Microphone plug pin numbers viewed from rear of pin receptacle 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 7 If the microphone jack is used to hold t...

Page 9: ...supervision of the holder of an FCC issued general radio telephone operator s license 14 17 A FEW RULES THAT SHOULD BE OBEYED 1 You are not allowed to carry on a conversation with another station for more than five minutes at a time without taking a one minute break to give others a chance to use the channel 2 You are not allowed to blast others off the air by over powering them with illegally amp...

Page 10: ... am out of gas on interstate 95 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 NO traffic is moving smoothly on the Beltway YES Base to Unit 1 the weather Bureau has just issued a thunder storm warning Bring the sailboat into port NO Attention all motorists The weather Bureau advises that the snow tomorrow will accumulate 4 t...

Page 11: ...MEMO MEMO ...

Page 12: ...umber 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 seri...

Page 13: ...Printed in China AT0919030A ...

Reviews: