Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

PHILCO 20 - VOLUME
#2

I had a similar issue with an early model 70. The 500 ohm section controls the rf gain via the cathode circuit. The 5K side is to eliminate signal on the ant when the volume is turned down. This stops any reception when the volume is lowered.
I disconnected it and made a resistive divider that would quite the set with the volume down and it tuned to a moderate signal. It does lower the sensitivity but it's negligible.

GL

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 it!

Terry


Messages In This Thread
PHILCO 20 - VOLUME - by ducretet - 11-08-2022, 02:24 PM
RE: PHILCO 20 - VOLUME - by Radioroslyn - 11-08-2022, 04:04 PM
RE: PHILCO 20 - VOLUME - by ducretet - 11-09-2022, 03:28 AM
RE: PHILCO 20 - VOLUME - by Radioroslyn - 11-09-2022, 10:51 AM
RE: PHILCO 20 - VOLUME - by ducretet - 11-09-2022, 12:55 PM
RE: PHILCO 20 - VOLUME - by radiorich - 11-09-2022, 01:53 PM
RE: PHILCO 20 - VOLUME - by Radioroslyn - 11-09-2022, 02:04 PM
RE: PHILCO 20 - VOLUME - by ducretet - 11-09-2022, 03:56 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM
54C Complete Teardown/Rebuild
The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM
54C Cabinet Refinish
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM

[-]
Who's Online
There are currently no members online.

>