Richard -
This might be due to relay K2 contacts. This is the relay that shifts
the Carrier Oscillator to within the LSB filter passband for CW
operation. Be worthwhile to clean those contacts with a little DeoxIT
soaked paper strip.
** This may be one of those, "shoulda' sent it in private" messages....
:-) **
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs
<www.k4oah.com>
Richard Palmer wrote:
Thanks to all for the advice and expertise. Anyone who has looked at
tube testers know that "the" one to get is high dollar. You would
think that for the amount the design gets that it would also repair a
bad or questionable tube. :-)
Dollar for dollar I might be ahead on this just to buy a new set of
tube types for my TR-4 and go from there. I feel relatively curtain I
have a hinky tube because after the set warms up there is often a
change in audio that goes from a low pitch to high pitch or vise a
versa sound on my back ground noise. If I change over to X-CW and back
the audio returns to normal. Maybe a good cleaning will help. I'll
find out.
Thanks again,
Richard Palmer
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