[GreenKeys] Hal ST-6 using it in modern times

[Russ Miller]

Jeff,

I've used my HAL  ST-6 Demodulators in many contests.  What specific
questions do you have?

The 60 ma loop supply is incorporated within the ST-6.  Audio input from
your receiver is marked on the back of the ST-6.

Depending on the version, your ST-6 might contain an ASFK generator...

Contact me here or at wa3frp at gmail.com for more.

73

Russ

On Sat, Mar 21, 2020 at 8:12 PM Jeff G <jeffg at junknet.net> wrote:

> Just curious, does anyone know of a video showing someone actually using a
> Hal ST-6 TU, or something similar?
>
> There's a Rtty contest going on, and I'd like to see, if anything, just to
> be able to copy some RTTY to a real teletype. I spent the day fiddling with
> radio stuff and have a magnetic loop set up in the back yard (MFJ-1786). I
> have that hooked up to my Yaesu 857D, and on 20 meters I'm occasionally
> seeing rtty signals, but it seems like the noise level alone triggers the
> hal into printing gibberish. Not sure if my 857 can cleanly filter out just
> the rtty signal, especially with the loop being very finicky. (I could prob
> just clip lead a random wire outside if need be.
>
> Naturally FLdigi has no problem picking out the rtty through the mic of a
> webcam.
>
> Oh and FYI this appears to be the RTTY contest:
> http://bartg.org.uk/wp/bartg-hf-rtty-contest/
>
> Thanks!
>
> Jeff KC3GJX
>
>
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