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

Antennae not making a big difference. Why?
#5

The Antennae coil on this 91 (part #2), appears to have a magnetic wire wound around the outside of the form and a little small coil that the antennae connects to (25 ohm) that appears to be wound inside a small disk at the top of the coil assembly. This 25 ohm coil appears to be wound with a cloth covered wire with three tiny strands inside.

Am I right that the 25 ohm coil is just sitting at the top of this assembly? Or is the magentic wire wound over the cloth covered wire, with the wire terminating in that disk at the top?

Anyway, I found that one of the very fine cloth covered wires had been clipped by a mouse inside the coil, where it ran down the inside of the coil down to the lug. I was able to tin the three ends of the cloth covered wiring and solder on a fine piece of enamel coated magnetic wire and reconnect it to the lug again.

The coil looks brand new with no green discoloration at all, so for now I am going to try this out and see how it goes. Unless you guys tell me I am crazy to be doing this. I can pull and rewind the coil in necessary.

I have an open winding in my Detector Transformer (part #12) on the 4.5 ohm side of the transformer that I still need to address.


Messages In This Thread
RE: Antennae not making a big difference. Why? - by TheGorper - 01-17-2013, 12:05 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT 6 chassis screws size???
Hello bridKarl, that sounds right or maybe 8/32 . Sincerely Richardradiorich — 01:00 AM
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
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

[-]
Who's Online
There are currently 672 online users. [Complete List]
» 1 Member(s) | 671 Guest(s)
Avatar

>