UTC transformer help needed

Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

Folks,

I have a pair of interesting UTC transformers that I need information for. Any experts out there? I cannot find a listing in any of the easily found UTC literature, but I have likely only scratched the surface. Maybe they were special order or military?

The only markings are on the side: UTC W-1090, then a second line 706-105.

They are round, 2 3/16 inch diameter, 2 7/8 inch tall, with 16 terminals on the bottom. Resistance measurements show 4 windings, none identical. Weight is about 19 oz. They are similar in style to the RC-50 case shown in a 1953 catalog, but they are larger.

Any information would be appreciated. Incidentally, there is a non-USA e-bay listing for an amplifier that shows up when googling this. This listing indicates use for a SE OPT of 15K ohms to voice coil. If true, this could be a fun transformer for a low power SET.

I would really like to see a catalog listing or data sheet if anyone can help.

Thanks,
John

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Topic - UTC transformer help needed - DIY John 12:14:25 07/31/12 (8)

RE: UTC transformer help needed - Alpha Al 08:45:42 08/01/12 (5)

RE: UTC transformer O-8 Ouncer help needed - musma 07:19:01 11/20/18 (1)

RE: UTC O-8 Ouncer - musma 07:15:29 11/30/18 (0)

RE: UTC transformer help needed - DIY John 09:27:11 08/01/12 (2)

RE: UTC transformer help needed - Alpha Al 12:14:20 08/02/12 (1)

RE: UTC transformer help needed - DIY John 13:25:21 08/02/12 (0)

Sounds Like a Desireable Tapped SE Opt to VC or Line... - Interstage Tranny 15:39:36 07/31/12 (1)

RE: Sounds Like a Desireable Tapped SE Opt to VC or Line... - DIY John 18:39:47 07/31/12 (0)

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