My TR7 drifts around 100-150 Hz PTO during the first hour. After
that it calms down a bit, but it still drifts. I've come up with a
couple of potential solutions, but to be truthful, I don't know
enough to competently decide if they're what I want.
The Swan guys tell me the Cumbria Designs X-Lock huff-puff type
frequency stabilizer (http://www.cumbriadesigns.co.uk/x-lock.htm)
guarantees < 10 Hz stability, but it's apparently better than
that. One person I know installed them in a Heathkit SB transceiver
(I forget which) and a Swan 270B Cygnet and measured the drift at about 3 Hz.
I've also looked at the DL1SDQ "Digital Automatic Frequency Control"
(DAFC) huff-puff stabilizer (http://www.conny-dl1sdq.de) that he says
is intended for the TR7, although it appears it's not adaptable for
RV7. It's about $114 as compared to the X-Lock for about $30, as of
yesterday's Euro and Pound exchange rates.
Does anybody have any experience with either of these huff-puff
stabilizers, or is there a better way? How about for the RV7?
Thanks and Happy New Year!
73,
Tony
K4KYO
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