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

[Jim Haynes]

On Sat, 21 Mar 2020, Jeffrey Golas wrote:

> 1. I didnt realize RTTY uses LSB, even on 20 meters.
>
That's merely a convention, from the early days, before SSB.  Most 
demodulators have a reversing switch in case the tones are reversed from 
what they might be.  With DSP demodulators we started out with LSB being 
normal for RTTY, but USB was expected for all the other modes, so the 
reversing switch was changed to make USB normal for all modes on all 
bands.

Jim W6JVE