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

551, 51, 51A clock radio
#2

An IF transformer is difficult thing to rewind and make it work properly. The type of wire, the distance between the coils, how it's wound, and the amount of Q of the coils are all factors that determine the IF transformer's performance. 

If the rewind looks like it's hand wound or spun on a drill I would look for a replacement 175kc transformer. They were popular from the '30s-50's so they're not hens teeth.

The resistance readings don't really mean anything in this case. It would just tell you if the coil is open or not. Your probably looking for about 20-30 ohms.

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


Messages In This Thread
551, 51, 51A clock radio - by Eric - 07-27-2023, 08:48 AM
RE: 551, 51, 51A clock radio - by Radioroslyn - 07-27-2023, 02:57 PM
RE: 551, 51, 51A clock radio - by Eric - 07-28-2023, 08:44 AM
RE: 551, 51, 51A clock radio - by Ron Ramirez - 07-28-2023, 08:55 AM
RE: 551, 51, 51A clock radio - by Eric - 07-29-2023, 11:40 AM
RE: 551, 51, 51A clock radio - by Eric - 07-29-2023, 03:37 PM
RE: 551, 51, 51A clock radio - by Ron Ramirez - 07-29-2023, 03:48 PM
RE: 551, 51, 51A clock radio - by Eric - 07-29-2023, 05:49 PM
RE: 551, 51, 51A clock radio - by Ron Ramirez - 07-29-2023, 07:09 PM
RE: 551, 51, 51A clock radio - by Eric - 07-30-2023, 02:39 PM
RE: 551, 51, 51A clock radio - by Ron Ramirez - 07-30-2023, 02:49 PM
RE: 551, 51, 51A clock radio - by Eric - 08-01-2023, 08:12 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 46-480 Electronic Restoration
I forgot to make mention of it the other day, but last week I corrected another error on my schematic (applies to both R...jrblasde — 09:27 PM
Gloritone 27 Radio
I have a model 27 that someone painted the cabinet brown. I've been trying to sell it for awhile but the cabinet paint m...Jim Dutridge — 02:30 PM
Restoring Philco 96
Joseph Yeah. The situaction is complicated by me living with my family in NJ while mom is in FL. Were it not for my ...morzh — 10:55 AM
Restoring Philco 96
Best of wishes for your mother. I hope she recovers well. My mother struggles with sciatic pain as well, so I am familia...jrblasde — 10:41 AM
Restoring Philco 96
Well, because I am away, I cannot check it. Hope mom becomes better enough for me to get back. I think I will be here f...morzh — 10:27 AM
Restoring Philco 96
Nice find! I hope it completes your console.jrblasde — 08:45 AM
Gloritone 27 Radio
Hello john, That, is the first time I have have seen or heard of that brand and model. Welcome to the party !! Sincer...radiorich — 08:08 AM
370 Norman Bel Geddes trim pieces
Thank you! I’ll probably use the half-round molding and tone it to match the original. Thanks for the replies!Max T — 06:34 AM
Gloritone 27 Radio
I'm kind of late to this thread, but Buzz1151 has a 3 part restore series on the model 27: A little bit of extra t...Eliot Ness — 05:48 AM
370 Norman Bel Geddes trim pieces
You can get half-round moulding in various diameters at any home improvement store. That way the flat edge is uniform. ...GarySP — 12:03 AM

[-]
Who's Online
There are currently 1861 online users. [Complete List]
» 1 Member(s) | 1860 Guest(s)
Avatar

>