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Philco 90 Oscillator question
Radioroslyn
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Posts: 7,296
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City: Roslyn Pa
#25

03-12-2017, 08:14 PM
Check the resistance of the ant coil primary and secondary. Both should show a low resistance like 20 ohms or less. Check the plate and screen voltage on  the rf amp should see about 200v or so. Cathode should have a low voltage maybe 5-10vdc. Acts like your ant coil is open. If you want to bring it over just give me a heads up so I can clear off the space to work on it.
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
(This post was last modified: 03-12-2017, 08:17 PM by Radioroslyn.)
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Messages In This Thread
Philco 90 Oscillator question - by bdi1976 - 03-07-2016, 10:00 PM
RE: Philco 90 Oscillator question - by TV MAN - 03-10-2016, 10:31 AM
RE: Philco 90 Oscillator question - by bdi1976 - 03-11-2016, 09:54 PM
RE: Philco 90 Oscillator question - by bdi1976 - 02-18-2017, 01:51 PM
RE: Philco 90 Oscillator question - by bdi1976 - 02-18-2017, 07:00 PM
RE: Philco 90 Oscillator question - by bdi1976 - 02-19-2017, 12:35 PM
RE: Philco 90 Oscillator question - by bdi1976 - 02-20-2017, 10:03 PM
RE: Philco 90 Oscillator question - by sam - 02-21-2017, 12:42 PM
RE: Philco 90 Oscillator question - by bdi1976 - 02-21-2017, 05:24 PM
RE: Philco 90 Oscillator question - by bdi1976 - 02-24-2017, 10:38 PM
RE: Philco 90 Oscillator question - by bdi1976 - 03-12-2017, 05:11 PM
RE: Philco 90 Oscillator question - by bdi1976 - 03-12-2017, 07:54 PM
RE: Philco 90 Oscillator question - by Radioroslyn - 03-12-2017, 08:14 PM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration