Galaxy DX Radios DX73V
Documentation Project

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     Owner's Manual
     Setting radio up for Basic Operation

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      DX73V Frequency Conversion
      Channel Chart (After Modification)
      10 meter FM Mod (28.000 - 29.655MHz)
      Disabling Talkback
      Clarifier Mod
      Roger Beep Tone Mod

     PLL Alignment
     Transmitter Alignment
     Receiver Alignment
     Alignment Locations
     VCO Frequency Generation Chart Bands Bands A-D and Bands E-H

     Transistor Voltage Chart
     Integrated Circuits Voltage Chart
Active Device Function Location Layout (Main Board)
     Semiconductor Datasheets

    DX73V Schematic Diagram
(June 23, 2000)
    Frequency Counter PCB Schematic Diagram (EPT210014C)
    Channel Select PCB Schematic Diagram (EPT077V30Z)
    Dimmer PCB Schematic Diagram (EPT55V-51Z)
    SWR PCB Schematic Diagram (EPT360041Z)
    DX73V Inter-connection Diagram
    DX73V Inter-connection Diagram
    Echo / Voice Changer/Robot Schematic ( EPTOSSB50C)

PCB Layouts and Parts
    Main PCB Layout (EPT360014B)
    Mic Jack PCB (EPT360050Z)
    Dimmer PCB (EPT55V-51Z)
    SWR PCB (EPT360041Z)

    Channel Select PCB (EPT077V30Z)
    Display PCB (EPT077V20Z)
    Mode Switch PCB (EPT066V40Z)
    Frequency Counter PCB (EPT210014C)
    Echo/ Robot PCB ( EPTOSSB50C)

Chassis, Miscellaneous & Mechanical Parts
    Front View Chassis Parts
    Front View Chassis Parts
    Rear View Chassis Parts
    Rear View Chassis Parts
    Miscellaneous & Mechanical Parts

Mic Wiring Diagram


1- Shield  (Ground)
2- Yellow  (Audio)
3- Red      (Transmit)
4- Black  (Talk-Back On / Off)

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 © 1998, 1999, 2000, 2001, 2002, 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.