You will find a circuit diagram for a TX-550 at .
The microphone wiring might be similar to the TX-525.
Hi guys,
I'm looking for a microphone wiring diagram for an Electrophone TX 525 cb radio.
Nothing seems to be coming up on Mr Google.
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You will find a circuit diagram for a TX-550 at .
The microphone wiring might be similar to the TX-525.
loopyloo (31-08-14)
Thanks Tristen.
I think it might be what I need.
These pin outs were always in the back of Dick Smith Catalogues.
If someone has a very old one it will be there.
Correct - back in the days when Dicks were actually useful and had practical info in their catalogs.
Also just google 4-pin microphone plug connections - there are only a couple of variations and you'll soon work out
which is which.
Generally you have: audio +, audio GND, PTT and cable shield. Audio GND and cable shield are usually tied together.
Thanks guys.
I worked out the wiring but the unit had other faults so it went in the bin.
10-4
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