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Philco Model 81B
#28

>Tried what you said and no good.

Well we need to see what's up with that. It should work with or without the osc working. Try connecting the generator to the grid cap of the 77 mixer tube and not the ant post. Set the dial for 1700kc. Check voltages.

>a 3.9-ohm coil coming off of item 5 and 10 and going to gnd. On the schematic it is shown just below the osc coil. Is it a coil or a few turns of wire and where is it?

That is part of #12 the oscillator coil, the feedback winding.

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


Messages In This Thread
Philco Model 81B - by texan george - 09-25-2022, 03:36 PM
RE: Philco Model 81B - by Radioroslyn - 09-25-2022, 07:49 PM
RE: Philco Model 81B - by David - 09-25-2022, 08:14 PM
RE: Philco Model 81B - by texan george - 09-25-2022, 08:24 PM
RE: Philco Model 81B - by texan george - 09-30-2022, 04:51 PM
RE: Philco Model 81B - by Radioroslyn - 09-30-2022, 10:32 PM
RE: Philco Model 81B - by texan george - 10-01-2022, 05:16 PM
RE: Philco Model 81B - by MrFixr55 - 10-01-2022, 05:40 PM
RE: Philco Model 81B - by Radioroslyn - 10-02-2022, 08:18 AM
RE: Philco Model 81B - by texan george - 10-02-2022, 08:42 AM
RE: Philco Model 81B - by falcon123 - 10-02-2022, 09:49 AM
RE: Philco Model 81B - by texan george - 10-02-2022, 01:05 PM
RE: Philco Model 81B - by Radioroslyn - 10-02-2022, 02:36 PM
RE: Philco Model 81B - by texan george - 10-02-2022, 05:05 PM
RE: Philco Model 81B - by Radioroslyn - 10-02-2022, 06:13 PM
RE: Philco Model 81B - by texan george - 10-03-2022, 01:17 PM
RE: Philco Model 81B - by radiorich - 10-03-2022, 02:30 PM
RE: Philco Model 81B - by texan george - 10-04-2022, 05:09 PM
RE: Philco Model 81B - by MrFixr55 - 10-04-2022, 10:12 PM
RE: Philco Model 81B - by texan george - 10-05-2022, 07:27 AM
RE: Philco Model 81B - by texan george - 10-21-2022, 02:55 PM
RE: Philco Model 81B - by radiorich - 10-21-2022, 03:24 PM
RE: Philco Model 81B - by Radioroslyn - 10-21-2022, 04:34 PM
RE: Philco Model 81B - by texan george - 10-22-2022, 06:26 AM
RE: Philco Model 81B - by texan george - 10-22-2022, 06:28 AM
RE: Philco Model 81B - by texan george - 10-22-2022, 02:19 PM
RE: Philco Model 81B - by texan george - 10-22-2022, 03:52 PM
RE: Philco Model 81B - by Radioroslyn - 10-22-2022, 08:43 PM
RE: Philco Model 81B - by Radioroslyn - 10-22-2022, 08:50 PM
RE: Philco Model 81B - by texan george - 10-23-2022, 04:45 PM
RE: Philco Model 81B - by Radioroslyn - 10-23-2022, 09:22 PM
RE: Philco Model 81B - by texan george - 10-25-2022, 05:46 PM
RE: Philco Model 81B - by texan george - 11-04-2022, 11:25 AM
RE: Philco Model 81B - by Radioroslyn - 11-04-2022, 12:58 PM
RE: Philco Model 81B - by RodB - 11-05-2022, 09:18 AM
RE: Philco Model 81B - by radiorich - 11-05-2022, 11:49 AM
RE: Philco Model 81B - by texan george - 11-05-2022, 03:26 PM
RE: Philco Model 81B - by texan george - 11-08-2022, 12:48 PM
RE: Philco Model 81B - by radiorich - 11-09-2022, 02:00 PM
RE: Philco Model 81B - by texan george - 11-10-2022, 12:09 PM



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