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

Philco 84 Ant, Osc, IF, Power Transformer valiues.
#1

Hello Everyone,

I have a few more questions on my Philco 84 restoration. Does anyone know where I can obtain the values for the antenna, oscillator, IF, and power transformers? I have a good schematic and parts list but those values aren't shown. I am going to replace all the caps and most of the resistors and don't want to run into any issues with the transformers because I am sure they are hard to get or rewind. I have an old Philco 60 chassis but don't know if some of those parts would be similar. 

Regards,
Bob
#2

Hi CT Kid,
Yes, the resistances are not listed on the schematic for the 84, but they are listed on the 81, which is an older version of the 84, the big difference is that the 81 receives the "Police" band (180 meters?) Otherwise the resistance reading for the coils should be close. The big problem are the tickler coil for the Oscillator and the primaries for the antenna coil and the "IF coil" that feeds the 2nd detector. There are several articles on rewinding these primaries. Not horribly difficult.

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
Best Regards, 

MrFixr55
#3

Don't think there are any rf/if parts on the 60 that are interchangeable w/the 84. Both osc coils are prone the have bad primaries so it makes sense to rewind the proper one. The 60 is a two band set where the 84 is a mono band set. There's no feedback tap on the (60) IF transformer so the original regeneration circuit won't work.

Generally speaking all of the rf/if coils should read <100 ohms, opt 400 ohms, and hv secondary 600 ohms end to end. Bear in mind these are all rough numbers. The true test is the measure the ac voltage from the ct to each end and it should be pretty equal +/- a couple of volts. Anything that measures in the 1000's of ohms is bad/open.

https://philcoradio.com/library/download...%20178.pdf

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
My last cabinet for this year
Hello Dan, That is really beautiful what great looking radio you have ! I have friends who live in Calgary and the wea...radiorich — 01:51 AM
12' Philco
Not anymore Mike. Andre The Giant Born: May 19, 1946, Coulommiers, France Died: Jan 28, 1993 (46 years), Paris, Fran...RodB — 11:53 PM
IF can wire size and Rubber mounts?
Renovated Radios do carry what you need. As for the voltage, a wire should be at least 300V-rated.morzh — 11:13 PM
12' Philco
Andre the Giant got 2" on Kareem :lol:morzh — 11:11 PM
IF can wire size and Rubber mounts?
Thanks for the info but I doubt that a hardware store would be carrying the proper tuner assembly support mountings for ...georgetownjohn — 10:38 PM
12' Philco
Perhaps Kareem Abdul Jabbar?GarySP — 10:33 PM
My last cabinet for this year
Outstanding work, Dan! Take care and BE HEALTHY! GaryGarySP — 10:31 PM
My last cabinet for this year
They are a nice looking radio, Stromberg. I have a small tabletop octagon-dial one. It sounds surprisingly nice. And t...morzh — 09:40 PM
Philco 41-608 changer coupler
Different years but the same idea.morzh — 09:38 PM
My last cabinet for this year
That’s a beauty! :thumbup:klondike98 — 09:24 PM

[-]
Who's Online
There are currently no members online.

>