[AMRadio] RCA Transformer ID?

ARS W5OMR ars.w5omr at gmail.com
Fri Jul 14 23:24:01 EDT 2017

Rca 1:1 mod xfmr.
Secondary good for 200mA.
I believe these were used on the Liberty ships using modulated CW.

I ran a pair of 250TH's on one, with a capacitor coupled reactor choke to
shunt the DC off of the secondary.


On Jul 14, 2017 19:40, "Mike Durff via AMRadio" <amradio at mailman.qth.net>

> RCA 901765-501 Tag says:Class = ModulationPri= 5500 ohmssec = 5500 ohms.
> I thought it was a modulation transformer, but others say no. Google
> doesn't yield  conclusive results.
> Any guesses?
> Thanks, Durff
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