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Self Osc in output on 41-296
BrendaAnnD
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Posts: 1,108
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City: Tacoma State, Province, Country: Washington
#11

04-18-2013, 04:20 PM
I wonder if that oscillation in the audio section might be doing that. Put your scope probe at the volume control input and pull both output tubes. See if the heterdynes go away. Alternately, and perhaps even better, connect an external amp to the volume control and listen. Sometimes your ears can tell you more than your test gear.
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Messages In This Thread
Self Osc in output on 41-296 - by w5ami - 04-17-2013, 04:06 PM
RE: Self Osc in output on 41-296 - by morzh - 04-17-2013, 06:19 PM
RE: Self Osc in output on 41-296 - by w5ami - 04-17-2013, 08:14 PM
RE: Self Osc in output on 41-296 - by BrendaAnnD - 04-17-2013, 08:21 PM
RE: Self Osc in output on 41-296 - by w5ami - 04-17-2013, 09:21 PM
RE: Self Osc in output on 41-296 - by BrendaAnnD - 04-17-2013, 10:03 PM
RE: Self Osc in output on 41-296 - by w5ami - 04-18-2013, 06:38 AM
RE: Self Osc in output on 41-296 - by w5ami - 04-18-2013, 06:55 AM
RE: Self Osc in output on 41-296 - by BrendaAnnD - 04-18-2013, 09:39 AM
RE: Self Osc in output on 41-296 - by w5ami - 04-18-2013, 09:47 AM
RE: Self Osc in output on 41-296 - by BrendaAnnD - 04-18-2013, 04:20 PM
RE: Self Osc in output on 41-296 - by w5ami - 04-21-2013, 03:08 PM
RE: Self Osc in output on 41-296 - by BrendaAnnD - 04-21-2013, 03:26 PM
RE: Self Osc in output on 41-296 - by Raleigh - 04-22-2013, 04:28 PM
RE: Self Osc in output on 41-296 - by 7estatdef - 04-22-2013, 05:06 PM
RE: Self Osc in output on 41-296 - by w5ami - 04-22-2013, 05:35 PM
RE: Self Osc in output on 41-296 - by BrendaAnnD - 04-22-2013, 07:47 PM
RE: Self Osc in output on 41-296 - by w5ami - 04-22-2013, 07:57 PM
RE: Self Osc in output on 41-296 - by BrendaAnnD - 04-22-2013, 08:36 PM
RE: Self Osc in output on 41-296 - by Mondial - 04-22-2013, 08:50 PM
RE: Self Osc in output on 41-296 - by 7estatdef - 04-22-2013, 09:19 PM
RE: Self Osc in output on 41-296 - by w5ami - 04-22-2013, 10:21 PM
RE: Self Osc in output on 41-296 - by w5ami - 04-23-2013, 01:42 AM
RE: Self Osc in output on 41-296 - by Raleigh - 04-23-2013, 02:57 PM
RE: Self Osc in output on 41-296 - by w5ami - 04-23-2013, 03:05 PM
RE: Self Osc in output on 41-296 - by Raleigh - 04-23-2013, 04:35 PM



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