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

Threaded Mode
Tuned radio hum
morzh
Odobenus rosmarus
*****
Posts: 15,832
Threads: 554
Joined: Oct 2011
City: Jackson, NJ
#16

01-16-2014, 08:59 PM
David,


This is dandy but how does it affect the hum?
Find
David
Phorum Expert
*****
Posts: 1,191
Threads: 25
Joined: Jan 2014
City: Wellborn Florida
#17

01-16-2014, 09:13 PM
I can not answer that question but have seen some strange things happen when hots and neutrals are crossed. Maybe similar to what happens when you reverse the plug on some AA5 sets. Have seen stuff hum if there were more than one breaker box and the neutrails in the second box are not isolated. David
Find
« Next Oldest | Next Newest »




Users browsing this thread: 4 Guest(s)
[-]
Recent Posts
Philco 60 Squealing
Well, a wave trap is a trimmer in series with the coil so at the resonant frequency it provides a short to ground. This ...RodB — 10:07 AM
Philco 60 Squealing
Rod, My radio is run 7. The wave trap is on that schematic as shown in the picture. dconant — 09:21 AM
American Bosch Model 802 auto radio
Hi Arran ,  Thanks for your help with this radio.And especial thanks for letting me know to look it up under United Ame...Antipodal — 04:32 AM
Philco 60 Squealing
Usually a wave trap is for keeping IF signals from entering the antenna and from leaving the antenna. You feed an IF sig...RodB — 09:30 PM
Philco 60 Squealing
I just peaked it for the best signal at 600. NULL it for IF frequency, originally it would have been null for 500kh...Chas — 08:05 PM
Philco 60 Squealing
Wavetrap no longer matters.morzh — 05:19 PM
Philco 60 Squealing
Rod, I had checked out your suggestions but did not help. I did solder the ground rivets to the chassis as Chas suggeste...dconant — 04:52 PM
37-690 Bass Choke Replacement
Yeah, I know, Mouser and Digikey don't have "big iron" components. For some reason Philco was messing with the...Radiodial — 04:25 PM
37-690 Bass Choke Replacement
Yes, I just had to deal with that while repairing the 37-604 Philco. Exactly that value choke was gone. And the current ...morzh — 03:52 PM
37-690 Bass Choke Replacement
Ah, now where to find one. I've into this before on smaller sets, I now recall. Hammond makes one that is only rated...Radiodial — 03:27 PM

[-]
Who's Online
There are currently 2546 online users. [Complete List]
» 1 Member(s) | 2545 Guest(s)
Avatar

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