[GreenKeys] Dovetron Adaptor

[Charles Ring, W3NU]

Jack wrote:

> ZCZC
>
> For those of you with the Big Bird Dovetrons, or
> anyone who has a "Tempest" version, I have
> put together a small circuit that will adapt the
> MIL188 +/- voltage output for a HV TTY loop.
> I have it in a WORD document, so I can send
> it to anyone who wants it. Just shoot me an email.
> Wish I had the time to get a website up...
>
> 73,
> Jack WA2HWJ

I used a 255A polar relay by itself to do this same job connecting a UPI
satellite receiver to a current loop some 15 years ago.

73 de W3NU