The tether cable is a straight through DB-9 cable. I continuity tested it last season, pin 1 is pin 1 and so on.
The programming cable is a standard DB-9 serial cable.
We have purchased two 25ft DB-9 M-F cables from here to use as extensions for both the tether and programming cables.
http://www.cablewholesale.com/catalo...rialcables.htm
It's nice to be able to be tethered and monitor printf's from the programming port while testing and diagnosing code.