[RTTY] 75 baud question

[Jay WS7I]

Ron K5DJ is working on interfacing his ST-8000 to his Kenwood 850. Can 
anyone assist Ron?  I don't have a 850 manual anymore and think we has 
it receiving okay but doesn't appear that FSK is working nor PTT.

ST-8000 end is easy enough just can't remember a thing about the 850.

He wants to run some 75 Baud for the BARTG.

If you don't have his email shoot me your phone and I'll relay and have 
him call ya.