Message-ID: <001a01bec325$d37c5660$bb818ed1@pavilion>
From: "J. N. Cameron" <CIC@centuryinter.net>
To: "Lancair List" <lancair.list@olsusa.com>
Subject: Radio noise 
Date: Wed, 30 Jun 1999 13:22:12 -0500
Mime-Version: 1.0

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    My ES still has an unacceptable level of radio noise when transmitting
on either COM.  For a while, I had convinced myself that some of it was
static buildup, due to my still flying in primer [the DuPont Corlar primer
will make your hair stand up when you rub it down].  Now, however, with a
pretty, new paint job, I still have the problem.  This is after having my
audio panel (PMA6000M) exchanged for one with the latest grounding and other
mods.  I also ripped out lots of wiring, re-routing things to get COM
antenna leads far away from everything else, did some extra grounding and
shielding, etc., etc.

    At this point I think I've left my envelope of expertise, and need some
professional help in tracking down the source of the noise, and a fix for
same.  I'm located in South Texas (2R8, near Corpus Christi).  Does anyone
out there have an avioniker that is good at tracking these things down?  I
get the feeling that the fellow I've used in the past is brushing me off a
bit because I didn't buy my radios from him.  The Lancair shop only wants to
work on new installations that they build up.  Those attitudes are
understandable, I guess, but I'm willing to pay going rates for the
expertise I need.  I think composites have some problems different from spam
cans, but what it really needs is someone with a nose for diagnosing
problems.  At this point I don't know if the noise originates in the radios
(Terra), the panel, the panel harness, RF pickup directly from the COM
antennas into wiring, or ..... ?

    Any names or leads would be much appreciated.  You might just e-mail me
directly, rather than posting them here on LML.  Thanks in advance for
anyone that can help.

Jim Cameron,  LNCE  N82500

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