Philco 645 Hum-m-m-m

Thread Rating:

0 Vote(s) - 0 Average
1
2
3
4
5

Linear Mode

Philco 645 Hum-m-m-m

morzh
Odobenus rosmarus

Posts: 15,811
Threads: 553
Joined: Oct 2011
City: Jackson, NJ

#32

07-03-2014, 09:45 AM

Yes sounds like motorboating.

Not sure but because it has to do with tuning and the IF and RF do not really depend in their stability on the passing frequency, try to look at the oscillator first. Maybe it becomes unstable at a certain point.

Find

« Next Oldest | Next Newest »

Messages In This Thread

Philco 645 Hum-m-m-m - by Winky Dink - 04-07-2014, 08:21 PM

RE: Philco 645 Hum-m-m-m - by gregb - 04-07-2014, 08:24 PM

RE: Philco 645 Hum-m-m-m - by Warren - 04-07-2014, 09:05 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-07-2014, 09:23 PM

RE: Philco 645 Hum-m-m-m - by Ron Ramirez - 04-08-2014, 05:31 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-08-2014, 10:10 AM

RE: Philco 645 Hum-m-m-m - by PAradiogeek - 04-08-2014, 11:16 AM

RE: Philco 645 Hum-m-m-m - by TA Forbes - 04-08-2014, 01:26 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-09-2014, 12:54 AM

RE: Philco 645 Hum-m-m-m - by TA Forbes - 04-09-2014, 10:58 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-09-2014, 01:45 PM

RE: Philco 645 Hum-m-m Fixed? - by Winky Dink - 04-12-2014, 10:43 AM

RE: Philco 645 Hum-m-m-m - by Steve Davis - 04-12-2014, 11:36 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-12-2014, 11:57 AM

RE: Philco 645 Hum-m-m-m - by TA Forbes - 04-12-2014, 12:04 PM

RE: Philco 645 Hum-m-m-m - by BrendaAnnD - 04-12-2014, 04:18 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-13-2014, 05:14 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-13-2014, 09:28 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-14-2014, 01:29 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-14-2014, 08:23 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-16-2014, 04:28 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-16-2014, 10:30 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-16-2014, 04:24 PM

RE: Philco 645 Hum-m-m-m - by TA Forbes - 04-16-2014, 04:43 PM

RE: Philco 645 Hum-m-m-m - by morzh - 04-16-2014, 05:05 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-17-2014, 04:54 AM

RE: Philco 645 Hum-m-m-m - by morzh - 04-17-2014, 08:54 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 04-18-2014, 01:08 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-02-2014, 11:20 PM

RE: Philco 645 Hum-m-m-m - by Arran - 07-03-2014, 12:21 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-03-2014, 01:53 AM

RE: Philco 645 Hum-m-m-m - by morzh - 07-03-2014, 09:45 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-04-2014, 12:37 AM

RE: Philco 645 Yet Another Question - by Winky Dink - 07-05-2014, 11:04 PM

RE: Philco 645 Hum-m-m-m - by morzh - 07-05-2014, 11:09 PM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-06-2014, 01:57 AM

RE: Philco 645 Hum-m-m-m - by morzh - 07-06-2014, 08:58 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-06-2014, 09:30 AM

RE: Philco 645 Hum-m-m-m - by morzh - 07-06-2014, 10:16 AM

RE: Philco 645 Hum-m-m-m - by Winky Dink - 07-07-2014, 08:04 PM

View a Printable Version

Users browsing this thread: 5 Guest(s)

Recent Posts
HiFi (Chifi) tube amp build - but my own design.
Tim, nice write up and thanks for sharing !! Sincerely Richardradiorich — 02:47 AM
HiFi (Chifi) tube amp build - but my own design.
Well, this was a real "Hum-Dinger" :lol: ! This will be kinda long, but hopefully it will help others having t...TV MAN — 01:55 AM
Shadow Meter Bulb
Phorum members, I am trying to find the bulb # for PHILCO Shadow Meter part number 45-2180 that is from a 37-640 chassis...georgetownjohn — 06:53 PM
Philco 41-608 changer coupler
3D-printing...short of machining, of course. Or molding.morzh — 05:20 PM
Philco 41-608 changer coupler
Thanks, Morzh. That solves the issue of the rubber pieces. Now, I need to find a way to replicate the pot metal piec...alangard — 05:07 PM
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

Who's Online

There are currently 6905 online users. [Complete List]
» 1 Member(s) | 6904 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me