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Re: [TenTec] Corsair 2 not stable on receive, 20 meters

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Corsair 2 not stable on receive, 20 meters
From: Tim <tim@sideswiper.plus.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 22 Jan 2015 13:41:39 +0000
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Hi,
Also had that problem some years ago; as far as I remember the pot is accessible from through the bottom cover. I also thought it might be the pto, but researched the problem on line and found out about the offset pot.
73
Tim
gm4lmh
On 21/01/2015 20:45, Bob Towers wrote:
Dwight

When I had my Corsair 2, I had a warble on a number of the HF bands. I could clearly see it on PSK31 signals on the waterfall of MixW. I rebuilt the PTO a number of times but it didn't cure the problem.

Eventually it was traced to a dirty preset pot which set an offset voltage on those bands. I can't remember the component reference, but - if I remember right - it was the only one on the board and sat up at right angles to the board. A squirt of switch cleaner did the trick.

For you, this may be the cause of your problem. Anyway, if you can find the offset pot, give it a squirt of switch cleaner and see what happens!

73

Bob Towers MM0RKT


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