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37-650 Issues
#24

Quote:A side question, should I be getting a voltage at the yellow/green tracer wire out of the power transformer? I am not currently, but was wondering if I should be. There is none listed on the voltages chart in the service bulletin. I am trying to figure where the power for the 2nd DET. AVC tube comes from, as it appears absent, as indicated above.

The yellow/green tracer wire is the B-. It's the most negative point in the radio. You can measure a negative voltage between it and the chassis. The 2nd detecter gets it's "power" from the radio signal itself. It is a diode (actually connected as a double diode) and conducts on the positve swings of the signal only enabling detection.

Steve Chambers


Messages In This Thread
37-650 Issues - by Robbie Roberts - 01-27-2006, 07:06 AM
[No subject] - by Steve Chambers - 01-27-2006, 08:01 AM
[No subject] - by Robbie Roberts - 01-27-2006, 12:07 PM
[No subject] - by Steve Chambers - 01-27-2006, 12:21 PM
[No subject] - by Robbie Roberts - 01-27-2006, 12:32 PM
[No subject] - by Robbie Roberts - 01-27-2006, 06:02 PM
[No subject] - by Steve Chambers - 01-27-2006, 06:23 PM
[No subject] - by Robbie Roberts - 01-27-2006, 06:29 PM
[No subject] - by Steve Chambers - 01-27-2006, 06:38 PM
[No subject] - by Robbie Roberts - 01-27-2006, 06:41 PM
[No subject] - by Robbie Roberts - 01-27-2006, 06:51 PM
[No subject] - by Steve Chambers - 01-27-2006, 07:05 PM
[No subject] - by Robbie Roberts - 01-27-2006, 07:44 PM
[No subject] - by Robbie Roberts - 01-27-2006, 09:07 PM
[No subject] - by Robbie Roberts - 01-30-2006, 05:12 PM
[No subject] - by Chuck Schwark - 01-30-2006, 07:53 PM
[No subject] - by Steve Chambers - 01-30-2006, 07:59 PM
[No subject] - by Robbie Roberts - 01-30-2006, 08:02 PM
[No subject] - by Chuck Schwark - 01-30-2006, 08:12 PM
[No subject] - by Robbie Roberts - 01-31-2006, 12:52 AM
[No subject] - by Chuck Schwark - 01-31-2006, 09:57 AM
[No subject] - by Robbie Roberts - 01-31-2006, 11:43 AM
[No subject] - by Robbie Roberts - 01-31-2006, 06:40 PM
[No subject] - by Steve Chambers - 01-31-2006, 08:53 PM
[No subject] - by Robbie Roberts - 02-02-2006, 09:24 AM
[No subject] - by Steve Chambers - 02-02-2006, 05:00 PM
[No subject] - by Chuck Schwark - 02-02-2006, 05:47 PM
[No subject] - by Robbie Roberts - 02-02-2006, 06:24 PM
[No subject] - by Chuck Schwark - 02-02-2006, 07:42 PM
[No subject] - by Robbie Roberts - 02-02-2006, 07:43 PM
[No subject] - by Robbie Roberts - 02-02-2006, 08:36 PM
[No subject] - by Chuck Schwark - 02-02-2006, 10:22 PM
[No subject] - by Robbie Roberts - 02-02-2006, 11:03 PM
[No subject] - by Bill Hutchinson - 02-03-2006, 03:20 PM
[No subject] - by Robbie Roberts - 02-03-2006, 03:26 PM
[No subject] - by Bill Hutchinson - 02-03-2006, 07:08 PM
[No subject] - by Robbie Roberts - 02-04-2006, 08:29 AM
[No subject] - by Robbie Roberts - 02-05-2006, 01:42 AM
[No subject] - by 49Stude63 - 02-05-2006, 11:07 AM



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