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

Antenna connections for 38-7
#4

(03-06-2012, 05:14 PM)Joejoe Wrote:  Just an additional note.

Not sure about how to connect the antenna and ground, I did a voltage check. I found that I have what I believe to be a ground loop. I measured about 46 VAC from any antenna connection (Red, Black and Ground) to the outlet cover screw. That I am sure isn't right. Where would this 46 VAC be coming from? The radio does work, on both BC and SW but I am not too happy measuring 46VAC from chassis and the antenna connections to ground.

Help!

Schematic here. http://www.nostalgiaair.org/PagesByModel...013256.pdf

Now then there may be a phantom voltages from a modern digital meter appearing because of the capacitors connected to the incoming power line (#47 on diagram.) It is not safe to operate this set until these components are replaced with safety compliant components.

You need to decide if you can replace ALL the electrolytics and paper capacitors, probably most if not all the small carbon resistors, and clean up the switches and connections. If you want to, you'll have a nice set in the end, and we will help you get there.

No meaningful fast track for this, IMHO.


Messages In This Thread
Antenna connections for 38-7 - by joejoe - 03-06-2012, 01:20 PM
RE: Antenna connections for 38-7 - by joejoe - 03-06-2012, 05:14 PM
RE: Antenna connections for 38-7 - by rghines1 - 03-06-2012, 06:27 PM
RE: Antenna connections for 38-7 - by codefox1 - 03-06-2012, 06:32 PM
RE: Antenna connections for 38-7 - by joejoe - 03-06-2012, 07:38 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Part numbers to model cross
That I wouldn't know, but sometimes the radio document itself shows one, same as the capacitor cans' etc pinouts.morzh — 12:46 PM
Part numbers to model cross
Thank you morzh, that is exactly what I was looking for. Now , is there some where that shows pinouts for Philco power ...Jim Dutridge — 11:37 AM
Restoration of the Canadian General Electric A-87
Thanks for your help Michael. In fact, this video is only an intermediate result. Later I had to apply another tinting l...RadioSvit — 09:01 AM
Restoration of the Canadian General Electric A-87
Great job on the cabinet. PS. In the US notation, "kenotron" refers to specific type of tubes; we call re...morzh — 08:24 AM
Part numbers to model cross
This document has at least some tables of models and parts used. Example: Choke 32-7572, used in 604 radio. Search f...morzh — 08:19 AM
Restoration of the Canadian General Electric A-87
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other...RadioSvit — 08:02 AM
Restoration of the Canadian General Electric A-87
Well... While the varnish is drying up, I started repairing the chassis... Of course I started by replacing the pa...RadioSvit — 07:12 AM
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM
Part numbers to model cross
Jim, We have this index put together by Dale Cook but I don't think that is quite what you are looking for. The Parts...klondike98 — 09:37 PM

[-]
Who's Online
There are currently 1501 online users. [Complete List]
» 2 Member(s) | 1499 Guest(s)
AvatarAvatar

>