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

Thread Closed

Interesting problem with Philco 38-62
#1

Ever since I've owned this radio, (almost a year), it has had come-and-go problems with the RF amp circuit. It needs a really strong antenna to work passably well. What normally works on all my other radios, you have to multiply it by five for it to work on this radio. It stopped working last night, and I immediately turned my attention to the 6A8G. I put my finger on top of the grid cap and the wire that goes to the tuning condensor and it immediately starts blaring my 1410 KHz AM transmitter tunes. I pulled the schematic, and I'm going to see if changing the tube and replacing the wax capacitors in the RF amp circuit help.

Side note, this radio has the broadcast band and 2.3 to 2.5 MC band. I'd like to make use of the band switch, since 2.3 to 2.5 is dead now. I want to turn it into a tone switch, but I bet it isn't as simple as unsoldering the wires and sticking in a capacitor that goes to the audio output across the switch.  


Attached Files Image(s)
   

Slave to an RCA Victor CTC-25


Messages In This Thread
Interesting problem with Philco 38-62 - by TheUniversalDave1 - 02-18-2016, 01:31 AM



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.

>