42-327 heater circuit confusion

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SlidesK
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Posts: 20
Threads: 2
Joined: Oct 2025
City: Springfield State, Province, Country: Missouri

#38

02-04-2026, 05:32 PM

Just a quick update on the 42-327 122 radio. It’s all rewired, couple of sockets replaced and it plays really well. The voltages are a little high, but not too bad. The only concern to figure out is the 1AF/ detector tube has a plate voltage that is just at 20v high, but no distortion. SW is good and will get tested after dark. Thanks for all the helpful comments and now I get out the ‘45 ARRL handbook to study more vacuum tube theory.

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Messages In This Thread

42-327 heater circuit confusion - by SlidesK - 01-21-2026, 12:31 PM

RE: 42-327 heater circuit confusion - by morzh - 01-21-2026, 05:31 PM

RE: 42-327 heater circuit confusion - by SlidesK - 01-21-2026, 06:53 PM

RE: 42-327 heater circuit confusion - by SlidesK - 01-21-2026, 07:09 PM

RE: 42-327 heater circuit confusion - by Arran - 01-21-2026, 10:50 PM

RE: 42-327 heater circuit confusion - by morzh - 01-21-2026, 11:16 PM

RE: 42-327 heater circuit confusion - by rfeenstra - 01-21-2026, 11:38 PM

RE: 42-327 heater circuit confusion - by Arran - 01-22-2026, 01:25 AM

RE: 42-327 heater circuit confusion - by SlidesK - 01-22-2026, 07:02 AM

RE: 42-327 heater circuit confusion - by MrFixr55 - 01-22-2026, 07:10 AM

RE: 42-327 heater circuit confusion - by morzh - 01-22-2026, 10:00 AM

RE: 42-327 heater circuit confusion - by SlidesK - 01-22-2026, 10:34 AM

RE: 42-327 heater circuit confusion - by morzh - 01-22-2026, 10:40 AM

RE: 42-327 heater circuit confusion - by MrFixr55 - 01-22-2026, 11:19 AM

RE: 42-327 heater circuit confusion - by Arran - 01-23-2026, 01:40 AM

RE: 42-327 heater circuit confusion - by MrFixr55 - 01-23-2026, 07:41 AM

RE: 42-327 heater circuit confusion - by SlidesK - 01-23-2026, 06:25 PM

RE: 42-327 heater circuit confusion - by RodB - 01-23-2026, 09:00 PM

RE: 42-327 heater circuit confusion - by SlidesK - 01-23-2026, 09:46 PM

RE: 42-327 heater circuit confusion - by morzh - 01-23-2026, 10:07 PM

RE: 42-327 heater circuit confusion - by SlidesK - 01-23-2026, 10:34 PM

RE: 42-327 heater circuit confusion - by Arran - 01-23-2026, 10:56 PM

RE: 42-327 heater circuit confusion - by morzh - 01-23-2026, 11:27 PM

RE: 42-327 heater circuit confusion - by MrFixr55 - 01-23-2026, 11:58 PM

RE: 42-327 heater circuit confusion - by morzh - 01-24-2026, 02:39 PM

RE: 42-327 heater circuit confusion - by SlidesK - 01-26-2026, 06:09 AM

RE: 42-327 heater circuit confusion - by MrFixr55 - 01-26-2026, 10:45 AM

RE: 42-327 heater circuit confusion - by SlidesK - 01-26-2026, 12:50 PM

RE: 42-327 heater circuit confusion - by MrFixr55 - 01-26-2026, 03:01 PM

RE: 42-327 heater circuit confusion - by SlidesK - 01-26-2026, 03:24 PM

RE: 42-327 heater circuit confusion - by SlidesK - 01-26-2026, 04:28 PM

RE: 42-327 heater circuit confusion - by SlidesK - 01-27-2026, 08:52 AM

RE: 42-327 heater circuit confusion - by morzh - 01-27-2026, 10:08 AM

RE: 42-327 heater circuit confusion - by SlidesK - 01-27-2026, 11:05 AM

RE: 42-327 heater circuit confusion - by morzh - 01-27-2026, 11:19 AM

RE: 42-327 heater circuit confusion - by SlidesK - 01-27-2026, 11:30 AM

RE: 42-327 heater circuit confusion - by SlidesK - 01-31-2026, 01:54 PM

RE: 42-327 heater circuit confusion - by SlidesK - 02-04-2026, 05:32 PM

RE: 42-327 heater circuit confusion - by MrFixr55 - 02-05-2026, 08:46 AM

RE: 42-327 heater circuit confusion - by SlidesK - 02-05-2026, 10:47 AM

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