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

Model 70 Detector Coil/Transformer
#9

Additional request.
I have a defective Detector Transformer with an open Primary. The Philco website, under Techniques say the RF Transformer Primary should be 69 Turns of #32AWG.
On My Detector, I agree with the 69 turns, but the wire is much smaller, maybe #38 or #39AWG. I can't verify because I couldn't get more than 12" of continuous wire on the defective winding, it was so brittle.
The schematics do not list resistance for any of the windings on this Model. I haven't gotten to the Oscillator Coil, but highly anticipate the small outer winding will also be open.
Does anyone have information on what Gauge wire, or resistance for the Detector and Oscillator Coils should be?
My Caliper isn't real accurate at these small diameters, but #38 seems to be about right, and I have that, don't have #39 or #40AWG.
The Philco Part#'s are 03083 & 03084.
Thanks in advance for any assistance!

Thanks
John N3MUN


Messages In This Thread
RE: Model 70 Detector Coil/Transformer - by Chas - 08-15-2023, 08:51 PM
RE: Model 70 Detector Coil/Transformer - by Chas - 09-11-2023, 03:07 PM
RE: Model 70 Detector Coil/Transformer - by jjfritz5528 - 11-17-2023, 12:44 PM
RE: Model 70 Detector Coil/Transformer - by morzh - 11-17-2023, 09:45 PM
RE: Model 70 Detector Coil/Transformer - by morzh - 11-19-2023, 03:51 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Model 80 Antenna Issue?
Thanks Gary and Rod.  I also found an article in the Philco Repair Bench under Service Hints and Tips, about installi...Hamilton — 12:32 PM
Model 80 Antenna Issue?
Hello Hamilton, here is a little information found in our Philco Radio Library at the bottom of the Home page. Hope it ...GarySP — 11:28 AM
Model 80 Antenna Issue?
I did as you suggested and touching the middle of the volume control did nothing so the coil has to be rewound. Any idea...Hamilton — 10:19 AM
1949 Motorola 5A9M
This would be the second portable in the "other radios" forum where I have a similar one in my collection. I h...Arran — 12:41 AM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hi PittsburgTost. The record changer looks like a Garrard or BSR (Likely Garrard). The spindles just pull out and pu...MrFixr55 — 11:57 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hello PittsburghToast , Welcome aboard and it looks like gary may have something for you ! now if I dig through my se...radiorich — 11:35 PM
Model 80 Antenna Issue?
You are kind of on the right path. You can touch the grid cap of the Detector/Oscillator 36 tube. I'm expecting a respon...RodB — 08:48 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Welcome to the Phorum, PittsburghToast!  I found an old thread that my interest you regarding the quality and worth of P...GarySP — 08:48 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Welcome to the Phorum! :wave: We do not have anything on that unit in our digital library. There is a Sam's Photof...klondike98 — 08:47 PM
Model 80 Antenna Issue?
I’ve replaced all the caps and resistors and the radio is working but minimal volume unless I put my hand near the re...Hamilton — 08:24 PM

[-]
Who's Online
There are currently 1443 online users. [Complete List]
» 2 Member(s) | 1441 Guest(s)
AvatarAvatar

>