1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
37-630T RF and IF grid 3
Ron Ramirez
Silent Key
*****
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#4

07-21-2022, 11:27 PM
The OP is referring to the suppressor grids of the RF and IF tubes in his original post, not the control grids.

fenbach, the schematic below shows the circuitry as you have described it.

https://philcoradio.com/library/download...20251A.pdf

(Yes, this site has Philco schematics as well, and they are completely free with no limitations.)

You have a later version of the 37-630, Code 126. The earlier version, Code 122, does have somewhat different circuitry as well as a different band switch with more "throw" between the three positions.

https://philcoradio.com/library/download...%20251.pdf
--
Ron Ramirez
Ferdinand IN
Find
« Next Oldest | Next Newest »


Messages In This Thread
37-630T RF and IF grid 3 - by fenbach - 07-21-2022, 04:01 PM
RE: 37-630T RF and IF grid 3 - by RodB - 07-21-2022, 05:08 PM
RE: 37-630T RF and IF grid 3 - by fenbach - 07-21-2022, 11:05 PM
RE: 37-630T RF and IF grid 3 - by Ron Ramirez - 07-21-2022, 11:27 PM
RE: 37-630T RF and IF grid 3 - by RodB - 07-22-2022, 02:50 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM
12' Philco
Rod, Yes, I know, but the Giant Philco is not around anymore either, so I go by whoever was alive fairly recently. H...morzh — 12:54 PM
Hickok AC51 tube tester
Absolutely no one is going to reverse engineer that circuit. Even the iron core is missing.RodB — 10:37 AM
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM
Hickok AC51 tube tester
Note that no power cord, power switch, or power transformer switch are shown. That (along with my experience with full s...DaleHCook — 07:09 AM
IF can wire size and Rubber mounts?
A pair of wire strippers can give you an idea of what the existing gauge of the wire leads are in the IF can, I think it...Arran — 06:07 AM
My last cabinet for this year
Hello Dan, That is really beautiful what great looking radio you have ! I have friends who live in Calgary and the wea...radiorich — 01:51 AM

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

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration