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
Philco model 37-650 issues
Ron Ramirez
Silent Key
*****
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#2

03-28-2010, 07:10 AM
Hi

First suggestion: You have too many 38-643B sets. You should immediately send one of them to me. Icon_lol

This seems to be a fairly common problem with 1937 Philco sets. I suggest you not only check the AVC, but also suspect the AM band antenna coil. Hopefully you still have that 37-650 junker? You may need the AM antenna coil from it. This is the usual culprit when you get stronger reception using the antenna on the grid cap of the 6K7 RF amp instead of the antenna terminal on back.

Also, be sure the jumper on back is connected between terminals 2 and 3 on the four-screw terminal block (the screws labeled BLK and GND).
--
Ron Ramirez
Ferdinand IN
Find
« Next Oldest | Next Newest »


Messages In This Thread
Philco model 37-650 issues - by Kenradio - 03-28-2010, 04:53 AM
Re: Philco model 37-650 issues - by Ron Ramirez - 03-28-2010, 07:10 AM
Re: Philco model 37-650 issues - by Kenradio - 03-28-2010, 09:15 AM
Re: Philco model 37-650 issues - by Kenradio - 03-28-2010, 09:22 AM
Re: Philco model 37-650 issues - by Ron Ramirez - 03-28-2010, 09:32 AM
Re: Philco model 37-650 issues - by Guest - 03-28-2010, 03:30 PM
Re: Philco model 37-650 issues - by Kenradio - 03-28-2010, 04:36 PM
Re: Philco model 37-650 issues - by exray - 03-28-2010, 06:19 PM
Re: Philco model 37-650 issues - by Kenradio - 03-29-2010, 03:28 PM
Re: Philco model 37-650 issues - by Ron Ramirez - 04-08-2010, 04:18 PM
Re: Philco model 37-650 issues - by Kenradio - 04-12-2010, 07:34 PM
Re: Philco model 37-650 issues - by Joe Rossi - 04-13-2010, 03:09 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Cannot Adjust an IF Transformer’s cores
Outstanding work indeed. I wish I could come up with solutions like this.slford310 — 11:16 PM
Cannot Adjust an IF Transformer’s cores
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM
PT-6 antenna connections
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM
Cannot Adjust an IF Transformer’s cores
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM
PT-6 antenna connections
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4. Yes, pin 6 of the 7C6 is...RodB — 07:34 PM
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM

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

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