48-472-121 tracking problem

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

03-02-2026, 06:34 AM

Hello, I’ve been working on restoring this radio for a long time and now that I’ve aligned the cans as specified I find a big tracking error from 550kc to 1200kc and would like to know if anyone else has dealt with this. Philco directions go from IF to the high side and I don’t find an obvious adjustment for midrange. I’m wondering if the transformer coil adjustment for am can be revisited after IF setting and used for a 600 kc padder of sorts to get the tracking slope that I need for the complete dial
I tried to attach the service info but couldn’t.

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48-472-121 tracking problem - by SlidesK - 03-02-2026, 06:34 AM

RE: 48-472-121 tracking problem - by SlidesK - 03-06-2026, 12:46 PM

RE: 48-472-121 tracking problem - by DaleHCook - 03-06-2026, 03:29 PM

RE: 48-472-121 tracking problem - by RodB - 03-06-2026, 04:54 PM

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