[Ham-Mac] Best way to key a CW rig using a Mac?

[Rob Frohne]

Hi All,

I'm looking for a good way to use my computer as a CW keyer for my 
Kenwood TS-570.  I don't mind writing a little software for it, but I 
haven't figured out a good way to key the rig from the Mac.  I have 
several old world machines, and am presently using a Wallstreet for the 
job.  I am using the serial port to get data from the rig to my logging 
program, and so it isn't available.  I could use the audio out and use 
SSB to transmit the CW signal, but the rig won't allow me to use the CW 
filters or features of the rig if I do that.  I've got  free ADB port, 
an S video port, SCSI, monitor port and a PCMCIA slot free (if it will 
fit with the wireless card in the other slot).  I suppose I could make a 
hardware hack to key the rig, and at the moment it actually is looking 
like the best option, but it sure would be nicer if the solution only 
involved software.  Does anyone have any ideas?

Tnx for the advice,

Rob
-- 
Rob Frohne, Ph.D., P.E.
E.F. Cross School of Engineering
Walla Walla College
http://www.wwc.edu/~frohro/