46-480 FM test socket?

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46-480 FM test socket?

DuMont
Junior Member

Posts: 40
Threads: 10
Joined: Nov 2018
City: Dallas State, Province, Country: Texas

#1

04-22-2019, 02:51 PM

I've finished the electronic restoration of the Philco 46-480 and while AM plays well, FM volume is very low even with volume turned to high. The 7F8 tube is good, and I discovered a 4.7 uf instead of a 5 mf electrolytic in the 2nd IF stage. Going to put the correct value in there, but what's really got me interested is a jack on the back of the chassis that says "FM Test Socket" and looks about the size of an iPod headphone jack. I can find NO REFERENCE to this in the Philco service manual, Riders, or Sams. Any idea what this is and what it's supposed to do?

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46-480 FM test socket? - by DuMont - 04-22-2019, 02:51 PM

RE: 46-480 FM test socket? - by morzh - 04-22-2019, 04:33 PM

RE: 46-480 FM test socket? - by DuMont - 04-24-2019, 06:51 PM

RE: 46-480 FM test socket? - by Jake Blake - 04-24-2019, 08:48 PM

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