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41-300 Phase 2 restoration
#31

Over the weekend I installed the fuse and aux in. Success! The phantom voltage is gone too even for whatever reason. Not like the fuse changes the arrangement of the safety caps or anything. And the aux in audio is much cleaner than AM transmitter.

Remaining oddities: It has a bit of hum even with volume down that it didn't before. Nothing awful but noticable. Also despite doing a DPDT switch to send the radio in to ground, switching it to aux only attenuates a strong station, not silences it. Neither are crippling so I can troubleshoot them later.

I ordered some mica caps and an inductor to jury-rig an antenna coupler, though to make it more permanent I'll have to figure out the right size pins to plug into the connector. Those should arrive this week. After that, next phase will be working on the peeling veneer on the center column of the cabinet. I got some Titebond, syringes, and an iron, but details fit better in the other subforum. 

I also am thinking I need to align the radio eventually since the dial seems off and I get dual peaks on some things, so I was looking into the details. Seems straightforward when you have the equipment, I just don't presently, so it's not an immediate thing so much as once I have the right test equipment.

1. As I understand, signal generator+oscilloscope is the best way to align but signal generator + voltimeter will work? I could look for a cheap oscilloscope, there are other things I could use it for in the vintage PC sphere, but it hasn't been a priority.
2. Would one of those cheap TinySA spectrum analyzers work as a signal generator for IF alignment? It looks like some people have done it, but has anyone here tried that?

Thanks again, everyone that's given advice on this. It's been a ride the last couple of months, and I think I started on hard mode in terms of vintage radio models to work on, but I'm really feeling the results.
2. What


Messages In This Thread
41-300 Phase 2 restoration - by RedRobot - 02-16-2026, 11:02 PM
RE: 41-300 Phase 2 restoration - by morzh - 02-16-2026, 11:22 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-18-2026, 06:24 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-19-2026, 09:17 PM
RE: 41-300 Phase 2 restoration - by morzh - 02-19-2026, 09:38 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-20-2026, 03:12 AM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-22-2026, 02:42 AM
RE: 41-300 Phase 2 restoration - by RodB - 02-22-2026, 11:49 AM
RE: 41-300 Phase 2 restoration - by morzh - 02-22-2026, 02:06 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-23-2026, 12:28 AM
RE: 41-300 Phase 2 restoration - by MrFixr55 - 02-23-2026, 08:07 AM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-23-2026, 09:53 PM
RE: 41-300 Phase 2 restoration - by MrFixr55 - 02-23-2026, 10:39 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-23-2026, 11:09 PM
RE: 41-300 Phase 2 restoration - by radiorich - 02-24-2026, 01:01 AM
RE: 41-300 Phase 2 restoration - by MrFixr55 - 02-24-2026, 08:32 AM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-25-2026, 04:24 AM
RE: 41-300 Phase 2 restoration - by MrFixr55 - 02-25-2026, 08:42 AM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-26-2026, 11:00 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 02-28-2026, 10:50 PM
RE: 41-300 Phase 2 restoration - by radiorich - 02-28-2026, 11:54 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 03-01-2026, 12:18 AM
RE: 41-300 Phase 2 restoration - by radiorich - 03-01-2026, 12:26 AM
RE: 41-300 Phase 2 restoration - by RedRobot - 03-01-2026, 01:10 AM
462ron - by 462ron - 03-01-2026, 08:38 AM
RE: 41-300 Phase 2 restoration - by radiorich - 03-01-2026, 12:03 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 03-01-2026, 08:25 PM
RE: 41-300 Phase 2 restoration - by Arran - 03-02-2026, 01:10 AM
RE: 41-300 Phase 2 restoration - by RedRobot - 03-03-2026, 08:52 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 03-04-2026, 10:48 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 03-09-2026, 01:40 AM
RE: 41-300 Phase 2 restoration - by RodB - 03-09-2026, 10:52 AM
RE: 41-300 Phase 2 restoration - by morzh - 03-09-2026, 10:56 AM
RE: 41-300 Phase 2 restoration - by MrFixr55 - 03-09-2026, 03:39 PM
RE: 41-300 Phase 2 restoration - by RedRobot - 03-12-2026, 03:38 AM
RE: 41-300 Phase 2 restoration - by radiorich - 03-12-2026, 08:31 AM
RE: 41-300 Phase 2 restoration - by morzh - 03-12-2026, 10:15 AM
RE: 41-300 Phase 2 restoration - by RedRobot - 03-15-2026, 11:17 PM
RE: 41-300 Phase 2 restoration - by MrFixr55 - 03-16-2026, 12:23 AM
RE: 41-300 Phase 2 restoration - by radiorich - 03-16-2026, 12:56 AM
RE: 41-300 Phase 2 restoration - by morzh - 03-16-2026, 09:00 AM



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