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Philco 60 code 121 IF's
#23

Not working yet. R10 I have a 50K, 4 caps make up #20 all changed the .09 are .1, .05 and a .5, Cap #13 is a new 110pf, a crossed pin #1 and #3.
On the 6A7 pin 4 you said 2-4 volts but the Philco 60 service bulletin shows it should be 180 volts I have 140 volts I changed the R10 from 32K to 27K to get more voltage. It was 102v.    
Remember this radio works on BC band.
Here is what I found, when the band switch is moved to SW the voltages drop.
On the osc coil this is what I found

BC band ------ SW band
Pin #1 22v ------- 3.3v
Pin #2 145v ------- 95v
Pin #3 149v ------- 95v
Pin #4 26 -------- 3.3v
Pin #5 26 ------- 3.3v
Top wire 22.9 ------ 3.3v

On the 6A7 voltages
BC Band ------ SW Band

Pin #2 255v ------ 254v
Pin #3 80v ------ 59v
Pin #4 140v ------ 92v
Pin #5 24v ------ .48v

These readings are from K #6 to pin

I have not tried another 6A7, I don't have a new one only used.
I have checked and rechecked wiring, but something is dropping the voltage when the band switch is in SW mode.

Jim
Spring Lake MI


Messages In This Thread
Philco 60 code 121 IF's - by Jimradio - 03-14-2024, 07:43 PM
RE: Philco 60 code 121 IF's - by MrFixr55 - 03-15-2024, 10:16 AM
RE: Philco 60 code 121 IF's - by Jimradio - 03-15-2024, 02:19 PM
RE: Philco 60 code 121 IF's - by Jimradio - 03-19-2024, 07:43 AM
RE: Philco 60 code 121 IF's - by RodB - 03-19-2024, 10:19 AM
RE: Philco 60 code 121 IF's - by Jimradio - 03-19-2024, 01:56 PM
RE: Philco 60 code 121 IF's - by Jimradio - 03-19-2024, 03:32 PM
RE: Philco 60 code 121 IF's - by Radioroslyn - 03-19-2024, 05:29 PM
RE: Philco 60 code 121 IF's - by Jimradio - 03-19-2024, 07:27 PM
RE: Philco 60 code 121 IF's - by Radioroslyn - 03-20-2024, 06:27 AM
RE: Philco 60 code 121 IF's - by Jimradio - 03-20-2024, 09:58 AM
RE: Philco 60 code 121 IF's - by radiorich - 03-21-2024, 09:09 AM
RE: Philco 60 code 121 IF's - by Jimradio - 03-21-2024, 11:46 AM
RE: Philco 60 code 121 IF's - by klondike98 - 03-21-2024, 12:04 PM
RE: Philco 60 code 121 IF's - by Radioroslyn - 03-21-2024, 08:51 PM
RE: Philco 60 code 121 IF's - by Jimradio - 03-22-2024, 07:57 AM
RE: Philco 60 code 121 IF's - by radiorich - 03-22-2024, 08:17 AM
RE: Philco 60 code 121 IF's - by Jimradio - 03-22-2024, 11:19 AM
RE: Philco 60 code 121 IF's - by Radioroslyn - 03-22-2024, 12:55 PM
RE: Philco 60 code 121 IF's - by Jimradio - 03-29-2024, 07:48 AM
RE: Philco 60 code 121 IF's - by RodB - 03-29-2024, 10:36 AM
RE: Philco 60 code 121 IF's - by Jimradio - 03-29-2024, 03:09 PM
RE: Philco 60 code 121 IF's - by Jimradio - 03-30-2024, 03:54 PM
RE: Philco 60 code 121 IF's - by Jimradio - 04-04-2024, 09:47 AM



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