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

[Jeffrey Golas]

Yep, that was one of a few issues, and thanks to you and Russel I got it sorted out:

1. I didnt realize RTTY uses LSB, even on 20 meters.

2. I had the st-6 on AM mode

3. Radio was turned up too loud (from trying to pick up weak stations)

4. 857D radio’s 500hz cw filter appears to be fixed at a center freq of 1700hz. As such, when I tried to tune the station up to 2125(ish) for the hal, the filter cut it out.

Correct me if Im wrong on that last one, but I saw the freq response showing on fldigi’s waterfall.

Thanks all!

Jeff KC3GJX

> On Mar 21, 2020, at 9:05 PM, Duncan Brown <duncanancy at earthlink.net> wrote:
> 
> Jeff,
> 
> I have used the ST-6 on HF occasionally.  If the ST-6 is triggering on Noise, you may be driving the ST-6 with too much audio.
> 
> With the meter in the TUNE position, you should be able to get a half scale reading on an AFSK signal and little or no reading on noise.
> 
> Also, make sure the audio filters are tuned to the right frequencies.
> 
> Good Luck & have fun,
> 
> Duncan
> K2OEQ
> 
> 
>> On 21-Mar-20 20:12, Jeff G 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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