[GreenKeys] Autostart freq for 170 shift RTTY

Harold Hallikainen harold at w6iwi.org
Wed Dec 30 17:08:36 EST 2020


OK, I did not even think of specifying center frequency! One more to the
collection!

I have 10 Hz resolution. Is 100 Hz likely to be the lowest resolution? If
so, perhaps we should

> Whatever you choose is OK, but some of us have ONLY 100Hz resolution on the
> FSK center freq. I can do 14,083,800+/-85 Hz but I cannot set an
arbitrary freq.  IF the AFSK suppressed carrier freq is on an even kHz,
then I will be within 10 Hz since the FSK freq is 2210+/-85 from there,
or for "14086",
> then the ham FSK freq is 14083,790+/-85 Hz.
> If you make the mark frequency on an even kHz, then 15Hz is as close as
I can come. You choose, but please be prepared for some of us to be "off
frequency".
>
> Those of us running 850 shift with military gear know that our FSK
center freq has to be on 1 kHz boundaries because some gear doesn't even
do 100Hz steps..
>
> I am sure that hams, the military, and commercial outfits could have
made the situation even worse, but it sure seems like they were trying
really hard.......oh yeah, don't forget to toss in mark high vs mark
low....
>
> Cheers,
> Nick
> Nick England K4NYW
> www.navy-radio.com
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