Cobra 148 GTL mic wiring issue.

[N1QXV]

Hey there guys - I have a 148 gtl with the 4 pin plug on the front.

Inside wiring colors are as follows:

1 - org
2 - red
3 - brown
4 - black

I have looked up the wiring for a 4 pin mic but I cant get any combination to work.

I have a generic no name mic with the wire colors:

Red, white, yellow with shield around it, and black.

I tried black and shield between 1 & 4.
Red and white between 2 & 3.

I even tried yellow in place of white as it has the shield around it for audio.
I get noise out of the rig when I key it, like feed back but never any audio swing.

I also tried a known good mic a cobra and no audio. The guy who had the rig before I
had it working fine.

Suggestions on how to wire the first mic would be helpful.

Thanks

[Irondog]

Normally the 4 pin mic wires at 1:shield 2:audio 3:transmit 4:receive. Connect your shield and audio then it should be a simple matter of seeing which is which for the remaining two.

[ragtop1967]

Normally the 4 pin mic wires at 1:shield 2:audio 3:transmit 4:receive.

Connect your shield and audio then it should be a simple matter of seeing which is which for the remaining two.

Audio is usually the white wire. This mic as I mentioned has a yellow wire with a shield. Should I treat that as audio or is white audio ??

Rx - Would that be ground or black wire ??

Inside wiring colors are as follows:

1 - org
2 - red
3 - brown
4 - black

I have looked up the wiring for a 4 pin mic but I cant get any combination to work.

I have a generic no name mic with the wire colors:

Red, white, yellow with shield around it, and black.

I tried black and shield between 1 & 4.
Red and white between 2 & 3.

[Night Crawler]

If you can't figure it out try this [Please login or register to view this link]

[N1QXV]

Okay that looks good. I checked a few places before but this may clear some things up.

I have tried several combinations.

They guy could have been a piece of crap and said there are no problems and there could be an audio issue.

I will try a few more times before sending it off to a friend to go through it.

Thanks for the help guys..

[TheCBDoctor]

Okay that looks good. I checked a few places before but this may clear some things up.

I have tried several combinations.

They guy could have been a piece of crap and said there are no problems and there could be an audio issue.

I will try a few more times before sending it off to a friend to go through it.

Thanks for the help guys..

Hi N1QXV

You said you used a Cobra mic from another radio and it still did not work? I would say your radio has something other than a mis-wired Mic problem. You have a radio problem.

Respectfully,

[Irondog]

Yep...I agree with the DR.

[ragtop1967]

I got the cobra mic to work a few days ago.

I must have been at it to long the first time when it wouldn't. Its good now.

Thanks for the suggestions.