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Philco 89 Questions
Ron Ramirez
Silent Key
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Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#16

07-27-2022, 04:48 PM
It sounds like someone took some liberties with your radio.

Pin 4 of the 77 is the suppressor grid and should connect to ground.

Pin 5 of the 77 is the cathode and should connect to the top of the oscillator tickler coil per the schematic.

If I were you, I would change the wiring to correspond with the schematic.
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Ron Ramirez
Ferdinand IN
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Messages In This Thread
Philco 89 Questions - by Jimradio - 07-04-2022, 12:37 PM
RE: Philco 89 Voltages - by morzh - 07-04-2022, 02:43 PM
RE: Philco 89 Voltages - by Jimradio - 07-05-2022, 06:46 AM
RE: Philco 89 Voltages - by Jimradio - 07-06-2022, 11:56 AM
RE: Philco 89 Voltages - by Radioroslyn - 07-06-2022, 04:55 PM
RE: Philco 89 Voltages - by Ron Ramirez - 07-06-2022, 06:17 PM
RE: Philco 89 Voltages - by Jimradio - 07-07-2022, 07:06 AM
RE: Philco 89 Voltages - by MrFixr55 - 07-07-2022, 04:21 PM
RE: Philco 89 Voltages - by Jimradio - 07-11-2022, 02:26 PM
RE: Philco 89 Voltages - by Ron Ramirez - 07-13-2022, 07:24 AM
RE: Philco 89 Voltages - by Jimradio - 07-13-2022, 09:01 AM
RE: Philco 89 Questions - by Jimradio - 07-15-2022, 04:01 PM
RE: Philco 89 Questions - by MrFixr55 - 07-16-2022, 08:01 AM
RE: Philco 89 Questions - by Jimradio - 07-17-2022, 08:50 AM
RE: Philco 89 Questions - by Jimradio - 07-27-2022, 04:39 PM
RE: Philco 89 Questions - by Ron Ramirez - 07-27-2022, 04:48 PM
RE: Philco 89 Questions - by Jimradio - 07-27-2022, 07:01 PM
RE: Philco 89 Questions - by Jimradio - 07-29-2022, 07:21 AM
RE: Philco 89 Questions - by Jimradio - 07-29-2022, 10:22 AM
RE: Philco 89 Questions - by Jimradio - 08-06-2022, 07:16 AM



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  1. The PHILCO Phorum
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