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

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

Philco 70 antenna lead
#5

Yes, that wire will not pick up much interference as routed - the RF at that level won't be affected, and if you have stuffed the original filter caps on top, it won't cause much of a problem. The main problem with these old radios of that era is the finely wound coils (such as the main antenna coil from that wire) has turned to basically mush (don't know exactly what they coated it with or soaked it in), cut one open and examine with a magno glass to see. Put a signal tracer on that front end and hear it, that sound is amplified thoughout the remaining stages and ruins it, the radio just won't filter it out and it sounds nothing like when it was new - that coupled with all the interference of todays meanies that hit it. You have to rewind these with fresh wire and start at the front end to get any sort of good fidelity, can you say get a coil winder? Then you can work your way from the front end to the final result. Turn the tone cap off and hear the awful sound, that is the mush I am speaking of, it should not sound that way. I have found some good sounds and decidedly bad sounds out of the 70. The IF coils suffer from this as well.


Messages In This Thread
Philco 70 antenna lead - by Jim Dutridge - 12-25-2024, 01:54 PM
RE: Philco 70 antenna lead - by morzh - 12-25-2024, 02:21 PM
RE: Philco 70 antenna lead - by Jim Dutridge - 12-25-2024, 03:55 PM
RE: Philco 70 antenna lead - by Dave Schings - 12-26-2024, 04:30 PM
RE: Philco 70 antenna lead - by radio1 - 02-21-2025, 07:26 PM
RE: Philco 70 antenna lead - by morzh - 02-21-2025, 07:46 PM
RE: Philco 70 antenna lead - by Jim Dutridge - 02-22-2025, 04:34 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM
Philco model 38 code 121 not receiving signal.
Good luck next thing you know you will be winding coils just for the fun of it. DavidDavid — 11:29 AM
Testing a speaker and output transformer Trutone A2-G
morzh Short-circuited turns can be considered as a half-dead transformer. But on this case transformer will hot and s...Vlad95 — 11:01 AM
Testing a speaker and output transformer Trutone A2-G
I am not sure how a transformer could be weak. It could be inadequate, but only when you replace the original with somet...morzh — 09:56 AM

[-]
Who's Online
There are currently 2213 online users. [Complete List]
» 2 Member(s) | 2211 Guest(s)
AvatarAvatar

>