TIPS:
You need to have Acrobat Reader version 5 or newer installed to view the files with icon.

If the files with or icon will not display see the Site FAQ for help on printing, viewing and using this information.

SPECIFICATIONS
      Owner's Manual
      Factory Service Manual
 

Click to see full size

RADIO MODIFICATIONS
      Frequency Conversion
      Channel Chart (After Modification)
      Clarifier Mod

ALIGNMENT�PROCEDURES�
     PLL Alignment
     Transmitter Alignment
     Receiver Alignment
     Alignment Locations

SEMICONDUCTOR INFORMATION
      Semiconductor Datasheets

DIAGRAMS
    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

Stock
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

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

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