Your ST-6 has no idea what RF frequencies the  Mark and Space 
at.  You tune until you get 2125 for Mark, then if  the shift is 
170Hz you will be looking for 2295 for Space.  If the Mark is sent 
with a high RF frequency with respect to the Space, then you need to 
be on LSB.  We have discussed on this very reflector, and I know you 
understand this.  If both parties give the Mark RF frequency as the 
operating frequency, then everything is ok.  Sorry about the 200 Hz, 
but that is the Pactor and 300 baud AX.25 standard.  I know some TNCs 
(PK-232) are set up for an AFSK shift of 200Hz for RTTY.

73,

Mark N5RFX

>This is a problem for me as my ST-6 terminal unit does care what the
>mark and space frequencies is. Off be more then a few Hz and I can't
>copy. Same holds true for the 200 Hz shift TNC - can't copy them.



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