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

Thread Closed

Model 18 or 118 ?
#7

The value for those bypass caps isn't particularly critical. Just for convenience I've used  4.7mf at 450dc to replace the ones in several of my large chassis Philco's. 10's or 20's are ok as they are invisible once they are charged up.
When working properly should have a good sounding set as it has the super class A push/pull triode connected 42 tubes. Good for 10w of clean audio. You my want to have a look at the interstage transformer between the 42 driver tube and the pair of 42 outputs. Not unusual for it to have an open secondary or primary.
OBTW Happy Birthday!

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
Model 18 or 118 ? - by doug-5er - 02-10-2018, 07:54 PM
RE: Model 18 or 118 ? - by morzh - 02-10-2018, 08:34 PM
RE: Model 18 or 118 ? - by doug-5er - 02-10-2018, 09:01 PM
RE: Model 18 or 118 ? - by Radioroslyn - 02-10-2018, 09:10 PM
RE: Model 18 or 118 ? - by Ron Ramirez - 02-11-2018, 12:29 AM
RE: Model 18 or 118 ? - by doug-5er - 02-11-2018, 07:01 PM
RE: Model 18 or 118 ? - by Radioroslyn - 02-11-2018, 10:46 PM
RE: Model 18 or 118 ? - by doug-5er - 02-11-2018, 11:10 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
54C Complete Teardown/Rebuild
While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project.  O...glyphmon — 11:07 PM

[-]
Who's Online
There are currently 1871 online users. [Complete List]
» 1 Member(s) | 1870 Guest(s)
Avatar

>