Diesel mic

Discussion in 'CB Radio Forum' started by Runningbear2000, Nov 16, 2015.

  1. Runningbear2000

    Runningbear2000 Bobtail Member

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    Nov 16, 2015
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    I have a Diesel echo mic, I think model 4-7, and some of the wires from the cord to the circuit board have become detached. I'm looking for a schematic or an internal wiring diagram so I can get it working again. Can anyone help me? Or send me a link to where I can find what I need? Any help will be greatly appreciated.
     
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  3. rabbiporkchop

    rabbiporkchop Road Train Member

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    Which wires broke loose?
     
  4. rabbiporkchop

    rabbiporkchop Road Train Member

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    Pin number 1 is shield/ground
    pin number 2 is audio.
    pin number 3 is transmit.
    PIN number 4 is receive.
    You might be able to use logic to figure it out if you follow those wires from the plug back into the microphone.
     
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  5. rabbiporkchop

    rabbiporkchop Road Train Member

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    When you push the button pin 1 grounds to pin 2 through the microphone element and pin 1 grounds directly to pin 3. When you release the button pin 1 grounds directly to pin 4.
     
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