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Old April 6th 12, 03:31 PM posted to rec.radio.amateur.boatanchors
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Default Drake TR-4 questions

Thanks Richard. Yes I checked all the obvious stuff first...RF gain control,
persnickety "RCV/TRCV" slide switch on the side, antenna bulb fuse etc. Also
removed and checked the trimmer and coils of the IFs. I'm now focused on
a -0.25 VDC bias measurement on the 2 IF tubes instead of the -0.10 VDC
shown on the voltage chart.

Will update as progress is made.

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Old April 6th 12, 08:08 PM posted to rec.radio.amateur.boatanchors
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Default Drake TR-4 questions


"Ernie" wrote in message
...
Thanks Richard. Yes I checked all the obvious stuff
first...RF gain control, persnickety "RCV/TRCV" slide
switch on the side, antenna bulb fuse etc. Also removed
and checked the trimmer and coils of the IFs. I'm now
focused on a -0.25 VDC bias measurement on the 2 IF tubes
instead of the -0.10 VDC shown on the voltage chart.

Will update as progress is made.


Ernie, I think you may get more help by joining one of
the Drake mailing lists. There is one at:

http://groups.yahoo.com/group/DrakeRadio/join

and another at:

http://mailman.zerobeat.net/mailman/listinfo/drakelist

Nearly the same people on both. In particular Garrey
Barrell is quite expert and may know what has happened
immediately.


--
Richard Knoppow
Los Angeles
WB6KBL



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