[AMRadio] Need to Replace or Rebuild Modulation Transformer

Paul Baldock paul at paulbaldock.com
Sun Oct 11 15:02:50 EDT 2015

It needs to fit my chassis opening (max 5 1/8" wide, 9 1/4" deep. 6" 
tall).  It's for two 813s modulated by two 813s. Primary to Secondary 
is 1.32:1. Power rating is 300W, 250mA.

- Paul

At 11:25 AM 10/11/2015, John Lyles wrote:
>Could you elaborate on the impedance ratio, VA or current rating of 
>the secondary and audio power that a T21M64 has?
>Some of us have mod transformers from Stancor, Chicago, UTC, that 
>might fit the same requirements with different mounting. Or are you 
>stuck with that exact part?
>>Message: 3
>>Date: Sun, 11 Oct 2015 10:14:46 -0700
>>From: Paul Baldock <paul at paulbaldock.com>
>>Subject: [AMRadio] Need to Replace or Rebuild Modulation Transformer
>>My Thordarson T-21M64 modulation transformer has developed a primary
>>to secondary short.
>>Does anybody have one they would like to sell, or alternatively
>>can  recommend a rebuilding service
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