Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Stewart-Warner A72T3
#13

>If you don't have an FM generator an AM generator will do in a pinch. Just use an unmodulated 10.7MHz carrier to the FM antenna with a high impedance meter attached to 6AQ6 pin 6 to read a negative voltage. This voltage is the AGC voltage and varies depending on signal strength, which can be changed from the signal generator. If you get the AGC to vary with signal strength from the antenna the FM oscillator is probably not working. Otherwise one of the FM tubes may be bad; it's been my experience the FM RF amplifier. Double check any parts you replaced in the FM section. Do not change any of the settings until after you find and fix the culprit.

What were the results?

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
Stewart-Warner A72T3 - by Masonparker - 07-23-2022, 01:32 PM
RE: Stewart-Warner A72T3 - by Paul Philco322 - 07-23-2022, 01:45 PM
RE: Stewart-Warner A72T3 - by David - 07-23-2022, 04:54 PM
RE: Stewart-Warner A72T3 - by RodB - 07-23-2022, 05:30 PM
RE: Stewart-Warner A72T3 - by morzh - 07-23-2022, 07:27 PM
RE: Stewart-Warner A72T3 - by Masonparker - 07-23-2022, 08:33 PM
RE: Stewart-Warner A72T3 - by Radioroslyn - 07-23-2022, 08:56 PM
RE: Stewart-Warner A72T3 - by David - 07-23-2022, 09:17 PM
RE: Stewart-Warner A72T3 - by MrFixr55 - 07-23-2022, 09:22 PM
RE: Stewart-Warner A72T3 - by Masonparker - 07-24-2022, 06:54 AM
RE: Stewart-Warner A72T3 - by morzh - 07-24-2022, 10:19 AM
RE: Stewart-Warner A72T3 - by Masonparker - 07-29-2022, 04:19 PM
RE: Stewart-Warner A72T3 - by Radioroslyn - 07-30-2022, 08:01 AM
RE: Stewart-Warner A72T3 - by Masonparker - 11-29-2022, 10:07 PM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
Philco 16B Parts
I think the chassis is painted.morzh — 08:13 PM
Philco 38-2 Automatic Tuning
Honestrly, the original is quite acceptable and, it seems to me, can be cleaned.morzh — 08:11 PM
Philco 41-608 changer coupler
Mondial left a thread about remanufacturing thois type coupler.morzh — 08:09 PM
IF can wire size and Rubber mounts?
Are you talking about rewinding or rewiring? For rewiring, meaning runnin wires to the coil from other components, the ...morzh — 08:08 PM
12' Philco
I wonder who would be able to "no stoop" with this one.morzh — 08:05 PM
IF can wire size and Rubber mounts?
Hello PHORUM members, I am still working on restoration of my PHILCO 37-640.  I want to start with rewiring the IF ca...georgetownjohn — 06:32 PM
Philco 41-608 changer coupler
I am working on a Philco 41-608 with the gear-driven changer.  The coupling (#35-2220) between the motor assembly and th...alangard — 06:29 PM
Gilfillan Brothers Car Radio?
There is a Mission Bell model 19/19A that could be what you’re looking for, Riders vol 4. It has the tube line-up of: 0Z...Joe Rossi — 05:01 PM
Looking for verification of correct schematic.
Definitely 870044RossH — 01:12 PM
12' Philco
Wonder if the chassis was big too.daveone23 — 12:38 PM

[-]
Who's Online
There are currently 3743 online users. [Complete List]
» 1 Member(s) | 3742 Guest(s)
Avatar

>