[TenTec] Orion and RF Feedback

[John K Gotwals]

Ray, many thanks for your comments. I have already found that touching the 
mike makes a difference, although that may just be the symptom of a more 
serious grounding problem at this end. Radioworks 
http://radioworks.com/nbgnd.html has an illuminating discussion of ground 
problems, and my next step is to drill another hole through the window sill 
and run a wire down a story and a half to a ground rod. In addition I will 
try a counterpoise consisting of a 1/4 wavelength (at 40 meters) piece of 
hookup wire strung down the hall to determine its affect on my problem. W2DU 
choke filters between the Matchbox and amplifier and between the amplifier 
and Orion appear to have helped lessen the problem.

John, N9JG
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Message: 11
Date: Sat, 14 Oct 2006 09:55:40 -0400
From: "Mary Ann Higgins" <mahiggins at gmail.com>
Subject: Re: [TenTec] N9JG--Orion and RF Feedback
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Message-ID:
<1c32114a0610140655t2560fcdfs9b69ca7273edb205 at mail.gmail.com>
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Hi - One thing that made a nite & day difference to me
was using a mike with a metal case; Heil HM-10,TT 708.
My antennas are very close ( 25ft) and using the TT 706
was a disaster when using the ALS-600. Hope this helps.
Ray / W1JUS