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Date: Wed, 28 May 2014 07:37:40 -0400
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From: "Danny" <danny@n107sd.com>
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Subject: RE: [LML] Re: Audio squeal
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Thanks Shane.  I'll have to look up how to do that on my David Clark =
sets.

Danny
LNC2-360 Mk-II
AOPA 04856278
EAA 647062
NRA 156453324
Nothing is foolproof to the sufficiently talented fool.

-----Original Message-----
From: Shane [mailto:f4u5n@shaw.ca]=20
Sent: Tuesday, May 27, 2014 3:32 PM
To: Lancair Mailing List
Subject: [LML] Re: Audio squeal

Danny,

I had this happen on one of my aircraft about a year ago. I have a =
number of different headsets and every so often I would be taking =
someone for a flight and we would end up with the squeal just as you =
described. I also had an avionics shop check out the equipment, but they =
were unable to find anything wrong. After dealing with this a few times =
I discovered that it was the mic gain on one of the headsets that was =
causing the problem. I adjusted the gain down on all on all of my =
headsets and have not had a problem since.

Hope this helps,

Shane Daly

-----Original Message-----
From: Danny
Sent: Tuesday, May 27, 2014 5:51 AM
To: Lancair Mailing List
Subject: [LML] Audio squeal

This is for all you avionics buffs.  I was headed out for an instrument =
proficiency check last Saturday.  As we were taxiing out I noticed what =
sounded like a slight echo in my headset.  My CFII heard it too.  It was =
the kind of thing one hears from a feedback loop on public address =
microphone.  We didn=E2=80=99t give it much thought at first but as we =
continued talking it got progressively worse until finally it became a =
squeal whenever we spoke, again, just like a PA system microphone.  We =
played with the squelch, volume, and different headsets, all to no =
avail.  I later found that it isn=E2=80=99t there with only the pilot =
headset plugged in.
It also disappears when I bypass the audio panel.  This happened once =
before several months ago.  I had it look at by a reputable avionics =
shop but they were unable to replicate it and could find nothing wrong =
with neither my radios nor my audio panel.  I plan to have them take =
another look as soon as they can schedule me in but thought I=E2=80=99d =
query the list in the event anybody here has any experience in this =
area.
Your comments, thoughts, and consideration are appreciated.

Danny
LNC2-360 Mk-II
AOPA 04856278
EAA 647062
NRA 156453324
Nothing is foolproof to the sufficiently talented fool.


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