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Philco 90 Oscillator question
#2

Hi Mark,
I think the general consensus is that original was 38g but I don't think that gauge is real important within reason. Direction is, wind it the wrong way around and it won't oscillate. Not enough turns will stop it from working, if you are close to the number of turns it may work but won't tune the whole range of frequencies. Will dropout at the low end of the band. Some will bake the coil at low temp to evaporate any moisture in the form. Water can drastically lower the Q of the coil (efficiency).
If you are sure you are winding in the proper direction then try adding a few more turns (like 3-4) and see if that snaps it back into operation. You can take a listen for it with another set tuned to the same frequency + the IF frequency.

GL
Terry


Messages In This Thread
Philco 90 Oscillator question - by bdi1976 - 03-07-2016, 10:00 PM
RE: Philco 90 Oscillator question - by Radioroslyn - 03-08-2016, 07:32 AM
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



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