B&k Compressor Amplifier

[Audio Man]

Hello All, I have an old b&k (cobra) transistorized compressor amplifier model ca-300, it came with the astatic (lolly pop) style microphone. Now it has a 5 pin plug and i am trying to get it to work on my cobra 2000 gtl. It will transmit and i can receive on the meter but no sound thru speaker, i can jump pins 2 and 3 and get static and can receive fine, however when i key it does nothing but squeal.

it only has 4 wires from the box itself, white, black, shield, red, i have it wired as follows (standard) :
1 white
2 n/c
3 black
4 shield
5 red

can anyone tell me how to get this where it will rx and will work normally???

i was going to attach a pic, but i cant ever resize them where they will work.

[Night Crawler]

Is it in a blue case and the two controls on the front marked compression and level?

[Audio Man]

not blue, gray, but yes, 2 controls exactly like you said.....

[Night Crawler]

I had one of those compressors if I remember correctly
White audio
Black receive
Red transmit
Shield ground
Put the shield on pin 2 with a jumper to pin 4 see if that works.

[Audio Man]

so keep the standard?
1-white
2-shield
3-black
4-jump to 2
5-red

that look about right?

[Night Crawler]

That looks right give it a try see what happens.