TenTec
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[TenTec] PTO stability

To: tentec@contesting.com
Subject: [TenTec] PTO stability
From: Clark Savage Turner <csturner@slonet.org>
Date: Tue, 27 Aug 2002 21:43:17 -0700
List-post: <mailto:tentec@contesting.com>
An old topic, I remember this being discussed, but can't find my old notes. Anyone have a few hints or suggestions to slowing down the drift in my Ten Tec PTO? I have rebuilt it, the drift is over 1 KHz in an hour and it continues, but slows down, for many hours. I suspect I need to change the temp compensating cap in there and I have a friend with many boxes of temp compensating caps I can use to try.

Has anyone chosen caps for their PTO and has any simple, basic advice that would help me? I am not trying for perfection, I just need a few hints to get down to 20 or 40 Hz drift after a little warmup, like my other PTO.

Any tip at all appreciated. I have a freq counter and plan to tack solder in the replacement caps, then take some data and see where I get after a few tries. Make sense?

Clark
WA3JPG


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