Galaxy DX Radios DX48T
Documentation Project

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Pictures of inside the radio.

      Owner's Manual
      Features Sheet

Click to see full size

      DX48T Frequency Conversion
      Channel Chart (After Modification)
      Extended 10-Meter Frequency Conversion (28.000 - 29.655MHz)
      FC347 Frequency Counter Wiring Diagram to a DX48T

     PLL Alignment
     Transmitter Alignment
     Receiver Alignment
     Alignment Locations

      Semiconductor Datasheets

    Block Diagram
    Schematic Diagram Main Bipolar Chassis (Apr. 27, 2007)
    Schematic Diagram Main MOSFET Chassis (Apr. 27, 2007)
    EL Driver Schematic (EPT91V130Z)
    ECHO PCB Schematic (EPT0SSB51J)
    RF Power Amp Schematic (EPA010011D)
    Control wiring  
    DX48T Inter-connection Diagram
    DX48T Inter-connection Diagram

PCB Layouts and Parts
    Main PCB Layout (EPT690010C)
    VCO PCB (EPF000210Z)
    Dimmer PCB (EPT091V40A) Early Production
    Dimmer PCB (EPT091V41A) Current Production
    EL Driver PCB (EPT91V130Z)
    RF AMP PCB (EPA010011D) Early Production
    RF AMP PCB (EPA010012D) Current Production
    Amp Feed Back PCB (EPA010030Z)
    SWR PCB (EPA010020B)
    Channel Selector PCB (EPT48T20Z) Early Production
    Channel Selector PCB (EPT48T22Z) Current Production
    Display / Switch PCB (EPT048T31Z)
    Display / Switch PCB (EPT048T32Z) Later Production
    VR PCB (VOL / SQ, MIC / RF, ECHO / TIME) (EPT048T40Z) Early Production
    VR PCB (VOL / SQ, MIC / RF, ECHO / TIME) (EPT048T42Z) Current Production

Chassis, Miscellaneous & Mechanical Parts
    Miscellaneous & Mechanical Parts

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 © 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.