"Peter Thornton" wrote in message
...
I have a muff on the mike , if it was any closer I'd have to swallow it !
There are slits on both sides of the mike .
When using the radio the transmissions are noisy but undestandable , the
intercom is another story ,I can squelch out the noise but when speaking
the
squelch opens and all you hear is engine noise ( not electrical
interference)with a voice in it . What I need to do is filter out the
background noise somehow. Any suggestions? Peter.

Usually, one of the things that contributes to this is the VOX operation.
When you start to speak, ALL mikes that are plugged in open up. You could
try using a PTT arrangement which only open the mike of the person speaking.

Rich S.