It usta was be that headsets had a "mic level" control on them so that you
could adjust the output of the microphone on a headset to be somewhat
standard across all makes and models of headset. It could compensate for
the fact that your particular voice was above or below a "normal" level.

Somebody somewhere decided that it would save a dime a headset to eliminate
this feature and we have all been suffering since. If we design an intercom
for a "normal" voice/headset level and then a particular headset is too LOW,
we have volume and squelch problems. If it is too HIGH then it distorts on
voice peaks. It really cobs up the works.

Glad you have found what the "problem" was.

Jim



"Leo" LeoPowningatYahoo.com wrote in message
...
Jim and others interested,
I previously said that normal voice into the mikes on the headsets I
installed in my new homebuilt wouldn't easily break the squelch of the
newly built RST-442 Intercom I had also installed. Yesterday a friend
used his Sigtronics headset for the flight and the squelch was opened
instantly. So the cause of the problem was the inadequate output of the
electret microphones on the low cost headsets I had installed.
Thanks for a good product.
Leo