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

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

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
38-10 Won't Align Properly
rghines1
Member
***
Posts: 190
Threads: 8
Joined: Oct 2005
City: Lexington, SC
#2

07-18-2009, 02:04 PM
Hi Johhny,

Symptom suggest the oscillator is running too slow. You may have inadvertently aligned on the 2nd harmonic of the oscillator. See if loosening the trimmer adjustment 7 is possible to get the oscillator frequency running faster. With a station at 1200, the oscillator should run at 1670 kHz in the case of your radio having an IF frequency of 470 kHz. Your padder adjustment 9 may need loosening up too if it was tightened down as well.

Richard
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
38-10 Won't Align Properly - by Johnny - 07-17-2009, 05:55 PM
Re: 38-10 Won't Align Properly - by rghines1 - 07-18-2009, 02:04 PM
Re: 38-10 Won't Align Properly - by codefox1 - 07-18-2009, 02:22 PM
Re: 38-10 Won't Align Properly - by Johnny - 07-18-2009, 05:34 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
6TPZ and 5TPO Radio Help
Yeah, I'm still on 5TPO. Sorry, my bad, points 1 and 2 should be points 18 and 19 (easy mistake  :think: )  X7 is shown ...R3Sons — 11:42 AM
Philco 40-120C Filament Wiring
Hi folks, I'm in the process of restoring a Philco 40-120C and I'm finding the wiring to be a bit puzzling. According to...bluecap — 11:28 AM
462ron
Hi Levi, here’s just a thought. Most radios run the oscillator higher than the dial setting. Say you set your radio to 1...462ron — 10:10 AM
1930s Stewart-Warner Tombstone Radio need help identifying model number
Another Update: I found a couple of damaged coils inside this radio that might have something to do with why this radio ...captainclock1988 — 10:51 PM
6TPZ and 5TPO Radio Help
If you are still on 5TPO, you lost me there. What X7? What Points 1 and 2?morzh — 08:37 PM
6TPZ and 5TPO Radio Help
Quick progress report: X7 is broken. Only one leg soldered, the other missing and the diode is cracked. I've replaced...R3Sons — 05:05 PM
6TPZ and 5TPO Radio Help
Oh...and you have electrolytic caps there. All need to go and be replaced.morzh — 04:36 PM
6TPZ and 5TPO Radio Help
Thanks, will do.R3Sons — 01:25 PM
1930s Stewart-Warner Tombstone Radio need help identifying model number
UPDATE: I was able to pick up a signal generator on the cheap (amazingly enough) on feebay and I did an IF alignment fol...captainclock1988 — 09:53 AM
Philco 91 Schematic
Hi Rod, The resistor connects to pin 4 and the ungrounded side of block 9. From pin 9 of the RF tube to one side of ...dconant — 09:34 AM

[-]
Who's Online
There are currently 3383 online users. [Complete List]
» 2 Member(s) | 3381 Guest(s)
AvatarAvatar

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