Adjusting the mic gain made no difference and so the headset went back to
Telex for warranty repair (36 month warranty on the Stratus 30 and 60 months
for the Stratus 30XT). I'll report back later on my warranty repair
experience with them.
It's a nice headset at a moderate price so I hope I can report back
favorably.

--
Best Regards,
Mike.

http://flickr.com/photos/mikenoel/
"Mike Noel" wrote in message
...
My Telex 30 headset and SL30 nav/com have developed a loud and annoying
oscillation during xmit. The tone is both obvious in the headset
side-tone
and also is heard by other's listening on the frequency.

I've tried two other headsets (a DRE ENR and a non-ANR headset) and both
work fine with the SL30. My com2 is a King 97a and it works fine with all
of my headsets, including the Telex.

The problem seems to have developed in stages over the past several
months.
First I was noticing the Telex and SL30 would occasionally give my voice a
hollow sound for the first few transmissions of the day, then sound fine.
Finally last week the tower controller mentioned the squeal which I was
also
noticing. It tends to go away after a bit but it sounded odd for the
entire
flight.

Has anyone experienced a similar problem? I'm hoping to try a few other
brands of headsets this weekend to see if the headset is the likely
culprit.

Best Regards,
Mike.

http://flickr.com/photos/mikenoel/