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Wiring Microphone

Motorola1

Member
May 31, 2022
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I have a Cobra 140 GTL It has a 5 pin mic connector on the radio. I bought it at a auction it did not have a microphone for it. it did come with other cobra mics that were 4 pin. I think the 4 pin microphones only have 4 wires , so how do I make I believe the ground connection?

Thanks.
 

I have a Cobra 140 GTL It has a 5 pin mic connector on the radio. I bought it at a auction it did not have a microphone for it. it did come with other cobra mics that were 4 pin. I think the 4 pin microphones only have 4 wires , so how do I make I believe the ground connection?

Thanks.
I know that I could use a 4 pin to 5 pin Cobra to cobra Microphone adapter or I could take 1 of my extra 4 pin Cobra mics and remove the 4 pin plug and install a 5 pin plug. The 5 pin plug has a extra pin that is the ground, so maybe I could run a jumper between the ground and the audio shield inside the mic plug?

Does anyone know if this is one way to do this other then using an adapter?

Thank you.
 
Stock
1- Audio
2- Shield
3- Receive
4- Sw Com
5- Transmit

Astatic (4 wire)
1- White
2- N/C
3- Black
4- Shield
5- Red

Astatic (6 wire)
1- White
2- Shield
3- Black
4- Blue
5- Red
Yellow N/C

Galaxy DC-521S (4 wire)
1- Yellow
2- N/C
3- Black
4- Shield
5- Red
 
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  • @ heartbreaker3473:
    Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
  • @ AudioShockwav:
    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
  • @ heartbreaker3473:
    Okay, sorry, will put in a forum
  • @ heartbreaker3473:
    I put it in the general disscution help area and started a new thread. Thank you for letting me know.