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Linear Mode
89 oscillator check
Radioroslyn
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Posts: 7,285
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Joined: Dec 2009
City: Roslyn Pa
#4

01-22-2010, 06:54 PM
The winding in question connects from pin 5 of the#77 tube (cathode) to the cap and resistor in parallel. Should measure on the order of a few ohms. Bad ones will measure a few 1000 ohms. For winding details see the Philco Model 80 post.
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
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Messages In This Thread
89 oscillator check - by baspas - 01-22-2010, 11:22 AM
Re: 89 oscillator check - by baspas - 01-22-2010, 11:55 AM
Re: 89 oscillator check - by Carl Travis - 01-22-2010, 06:40 PM
Re: 89 oscillator check - by 7estatdef - 01-22-2010, 06:54 PM
Re: 89 oscillator check - by baspas - 01-23-2010, 02:14 PM
Re: 89 oscillator check - by 7estatdef - 01-23-2010, 09:37 PM
Re: 89 oscillator check - by baspas - 01-23-2010, 11:15 PM
Re: 89 oscillator check - by Ron Ramirez - 01-25-2010, 08:42 AM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
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