[Boatanchors] Help identifying some transformer & choke iron

[Rob Atkinson]

Thordarson T55s at one time were audio transformers, for getting mic
low Z to high Z to drive grid, or output plate to line Z to drive a
mixer.  But their designators were T55 followed by a letter and not a
number.  I'm talking about the late 1930s.

Rob
K5UJ

On Sun, Jul 14, 2013 at 12:19 AM,  <hwhall at compuserve.com> wrote:
> Today I was looking at a set of interesting heavy iron but I haven't been able to make sense of the part numbers.
>
> One is a Thordarson high-voltage transformer labeled "T-55744".? Web searches on that number haven't been successful for finding the specs.