[GreenKeys] UGC77

[Nick England]

Hi Gerry - I am just beginning to learn about these low-level Tempest
units. I have a TT-605/UG which is a miniature Model 28 ROTR reperf.
Are you saying that the selector magnets are just standard and can be
driven by a 60ma line?

Normally, I understand that the +/-6v signaling goes to some external
circuitry that then drives the selector magnets with like 500ma. Is
that right? Am I misunderstanding things here?

Oh, one more question, a listing for some units says "CRITICOM type" -
what does that mean?

Many thanks!

Nick K4NYW
www.navy-radio.com

On Thu, Jun 23, 2011 at 10:41 AM, Gerry Block <gblock at sbcglobal.net> wrote:
> George,
>
>  Why can't the one good one be made operational?   It is fairly easy to
> interface to the  optical distributor and get back to a loop configuration.
>
>
>  The selector magnets themselves are standard and can drive directly.
>
>  I have some schematics around if you want them.  I have two complete
> UGC77's
>
> Gerry Block
>