1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Coronado Oscillator problem
MrFixr55
Phorum Expert
*****
Posts: 1,032
Threads: 9
Joined: Jul 2020
City: Greenlawn State, Province, Country: NY
#8

03-12-2023, 05:44 PM
Possibly a shorted oscillator coil, but most of the time, that would kill oscillation totally. You are correct, the Oscillator section of the tuning cap should (but not always) have smaller or fewer plates than the RF section. The oscillator sounds like it is running at approx 250KHZ higher than it should. If the coil is not slug tuned, I would try to replace it.
"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
Best Regards, 

MrFixr55
Find
« Next Oldest | Next Newest »


Messages In This Thread
Coronado Oscillator problem - by Tom45acp - 03-10-2023, 07:39 PM
RE: Coronado Oscillator problem - by Arran - 03-10-2023, 11:31 PM
RE: Coronado Oscillator problem - by MrFixr55 - 03-11-2023, 06:21 AM
RE: Coronado Oscillator problem - by Tom45acp - 03-11-2023, 11:15 AM
RE: Coronado Oscillator problem - by MrFixr55 - 03-12-2023, 03:40 AM
RE: Coronado Oscillator problem - by Tom45acp - 03-12-2023, 10:31 AM
RE: Coronado Oscillator problem - by RodB - 03-12-2023, 11:07 AM
RE: Coronado Oscillator problem - by MrFixr55 - 03-12-2023, 05:44 PM
RE: Coronado Oscillator problem - by Arran - 03-13-2023, 02:41 AM
RE: Coronado Oscillator problem - by Tom45acp - 03-13-2023, 08:24 AM
RE: Coronado Oscillator problem - by Tom45acp - 03-14-2023, 06:13 PM
RE: Coronado Oscillator problem - by Tom45acp - 03-21-2023, 08:02 AM



Users browsing this thread: 4 Guest(s)
[-]
Recent Posts
My last cabinet for this year
They are a nice looking radio, Stromberg. I have a small tabletop octagon-dial one. It sounds surprisingly nice. And t...morzh — 09:40 PM
Philco 41-608 changer coupler
Different years but the same idea.morzh — 09:38 PM
My last cabinet for this year
That’s a beauty! :thumbup:klondike98 — 09:24 PM
Philco 41-608 changer coupler
Hi Morzh, I've searched using Mondial as the user name with various keywords such as 'coupler', 'motor', 'idler', 'p...alangard — 08:31 PM
Philco 16B Parts
I think the chassis is painted.morzh — 08:13 PM
Philco 38-2 Automatic Tuning
Honestrly, the original is quite acceptable and, it seems to me, can be cleaned.morzh — 08:11 PM
Philco 41-608 changer coupler
Mondial left a thread about remanufacturing thois type coupler.morzh — 08:09 PM
IF can wire size and Rubber mounts?
Are you talking about rewinding or rewiring? For rewiring, meaning runnin wires to the coil from other components, the ...morzh — 08:08 PM
12' Philco
I wonder who would be able to "no stoop" with this one.morzh — 08:05 PM
IF can wire size and Rubber mounts?
Hello PHORUM members, I am still working on restoration of my PHILCO 37-640.  I want to start with rewiring the IF ca...georgetownjohn — 06:32 PM

[-]
Who's Online
There are currently 3267 online users. [Complete List]
» 2 Member(s) | 3265 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)