[Milsurplus] Purity

[J. Forster]

There were transistor switching DC/DC converters made for the Type 12
sets, I think. They were plug in swaps for ARC-5 style dynos.

-John

===========

> I got a ARINC Q-5er once with the transistor switcher sub-ed out for
> the dyno, etc.  ARINC was a refurb/convert facility run by an airline
> consortium out of Miami.  Mint destruction for hire.
>
> The most interesting item was it's audio output tube, a 12A7GT.
> Anyone else ever see one?
>
>    Marty
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