Galaxy DX Radios DX979
Documentation Project

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      Owner's Manual
      Factory Service Manual

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      Frequency Conversion
      Channel Chart (After Modification)
      Clarifier Mod

     PLL Alignment
     Transmitter Alignment
     Receiver Alignment
     Alignment Locations

      Semiconductor Datasheets

    DX979 Schematic Diagram (EPT092912Z) (July 10, 2003)
    DX979 Schematic Diagram (EPT092913Z) (May 22, 2006)
    Control Schematic Diagram (July 10, 2003)

PCB Layouts and Parts
    Main PCB Layout (EPT092912Z, EPT092913Z)
    Channel Selector PCB (EPT092920Z)
    Display / Switch PCB (EPT092930Z)
    VR PCB ( VOL-SQ-OFF, MIC / RF Gain, DIM / PWR) (EPT092940Z)
    VR PCB (Clarifier / Talk Back) (EPT092950Z)
    Dimmer / EL PCB (EPT092961Z)
    Modular VCO PCB (EPF000210Z)
    SWR PCB (EPT360042Z)

Chassis, Miscellaneous & Mechanical Parts
    Miscellaneous & Mechanical Parts
    Chassis Exploded View Drawing

Mic Wiring Diagram

1- Shield  (Ground)
2- Yellow  (Audio)
3- Red      (Transmit)
4- White   (Receive)

Astatic (4 wire)
1- Shield
2- White
3- Red
4- Black

Astatic (6 wire)
1- Shield & Blue
2- White
3- Red
4- Black
Yellow NC

Daiwa EM-500
Cobra CA Series

1- Shield & Black
2- Red
3- White
4- Blue

Galaxy DC-521S (4 wire)
1- Shield
2- Yellow
3- Red
4- Black

Galaxy CB-660EI
1- Shield & Black
2- White
3- Red
4- Blue

1- Shield
2- White
3- Brown
4- Green

1- Shield & Red
2- White
3- Blue
4- Black
Yellow NC

Copyright © 2003

Disclaimer: Although the greatest care has been taken while compiling these documents,

we cannot guarantee that the instructions will work on every radio presented.