[Collins] 32S-1 band oscillator
Al Parker
anchor at ec.rr.com
Fri Jan 21 15:41:53 EST 2011
Hi folks,
I've been agonizing over the xtal osc. in a 32S-1 I'm checking out for
a local fellow (new to him, no useful history). It's refusing to
oscillate above 21.4mc. I've swapped tubes and xtals with known good
ones. I've ckd ckt component values, looked for svc bulletins,
judiciously cleaned the switch contacts and determined that they are
making contact, etc., all with no luck. I re-tightened all grounding
screws. It was wkg intermittently at first on lower bands, but changing
the band switch indexing a hair fixed that (so far).
The ckt is similar to the KWM-2A, but uses a 6DC6 vs a section of a
6U8, so some values are different. I've tried xtals that work in my
KWM-2A, and tubes from stock and my 32S-1.
Any thoughts &/or suggestions would be greatly appreciated.
tnx & 73,
Al, W8UT
www.boatanchors.org
www.hammarlund.info
"There is nothing -- absolutely nothing -- half so much
worth doing as simply messing about in boats"
Ratty, to Mole
More information about the Collins
mailing list