Mitchell Chesler <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Hello I'm new to this forum - an old newbie: had a TR-3 as a
teenager in 1968, and for old times sake recently acquired a TR-4 that
I estimate was manufactured around 1967. It has nice audio and good
output on all bands, but suffers from what I think is a dirty relay
(scratchy intermittent noise, corrected temporarily by switching
briefly to transmit) -- but a greater annoyance is apparent VFO
jumping on both transmit and receive - by a few hundred Hz. This
happens even if the rig is well warmed up.
The AC-4 that powers it is old and will need to be upgraded - probably
with the heathkitshop board. I did notice that the bias, after being
set a week ago, had dropped by about 15-20% and had to be reset.
Searching the Drakelist didn't point me in any direction so I thought
I'd just ask if there is perhaps a common cause/cure for the frequency
jumps.
Thanks es 73,
Mitch Chesler NB2N
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