[RTTY] Serial card recommendations?

[Rick Johnson]

Hi all.

Last week I upgraded my old shack XP box to 8.1. The migration went 
pretty smooth.

But... the only thing not working is RTTY keying. One card is a Sunix 
brand (model 4036), the other is a StarTech (model unknown; but Windows 
found the proper drivers, or so it said).

Both cards have Windows 8.1 64 bit drivers; which - according to 
Microsoft - should work fine. But they don't.

The StarTech makes my PC crash when I try to do RTTY with it; the Sunix 
card puts my rig in transmit; but doesn't do the FSK keying. In fact, I 
can select either COM port in the software, and - regardless of whether 
the cable is hooked up to COM4 or COM5 - the radio goes into transmit! 
Weird, to say the least.

So, my question: what are you using on Windows 8.1 that properly works 
in RTTY? Clearly my (oldish) cards and their drivers are no good....

Thanks, 73,

Erik - K5WW