Found an early 1950s Zenith AM/FM Clock Radio at Goodwill today!

[Electronic M]

I was thinking about 'borrowing' an AFC circuit for another model.

Originally Posted by Findm-Keepm

I too have one of these "bugeye" Zeniths.

Replace the ceramics in the oscillator and FM Converter section with NP0(C0G)ceramic discs for lower drift. Surprisingly, silver micas fail to prevent the drift....

IIRC, it was hard finding all the pF values at one vendor..

Interesting I may have to try that.

ATM my radio is way at the bottom of a massive list of projects....I may mod it in time for next year's Christmas music switch though.

[dieseljeep]

Originally Posted by Electronic M

I was thinking about 'borrowing' an AFC circuit for another model.


Interesting I may have to try that.

ATM my radio is way at the bottom of a massive list of projects....I may mod it in time for next year's Christmas music switch though.

Christmas music from November 1st! The day after Thanksgiving day was early enough.
The stations and their Arbitron ratings. Many times around the first of the new year there is a format change. I hope, it's a change for the better!