I have a corba 148 gtl when you key it moves no audio

There appears to be help here and that forum is the best place to ask. It is a Post Factory modification according to this.

WTB cobra 148 gtl side mic

WorldwideDX Radio Forum https://www.worldwidedx.com > threads > wtb-cobra-...
Feb 27, 2019 - 148 GTL side-mic uses 5 pin mic receptacle. If the radio in question is a side mic and has a 4-pin receptacle, then it was put in post-factory ...

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https://www.google.com/search?q=Cobra+148+GTL+side+mike+jack

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final

I would say a bad or cold solder joint on board somewhere. Bad quality control. Might flex radio chassis slightly while keying? A tooth pick and hours of probing around switching area on board and the pa section till problem found.

Hi
try replacing the transistor just before the last on the rf pa output.

Hope this helps

Ray

Well if they have a Radio Shack it is the place, Corba 148 is a great radio. hope this helps..

u have a cold soder joint or a crack in the board get a sordergun and just resoder ares all aroun the mic input

All "older", "real" or "desirable" Cobra 148 GTLs came with side-mounted 5 pin microphone sockets. For wiring information, see...

http://www.offroaders.com/info/tech-corner/reading/mic-wiring.htm

try rerouting your coax cable and make sure it's long enough

sounds to me like the final driver is blown, try replaceing it with a new one.

1 - shield, 2 - audio, 3 - rx, 4 - common, 5 - tx