Hi there
I built the TX/Interface desribed at the location pointed to by the following web site. Works like a charm with RF and DBFS or any program that uses the joystick interface.
I modified it a bunch to elimate a bunch of parts. I have a 10ch TX so don't need the parts around 5+.
The parts are readily available in N.A. at Digikey. Let me know if you need help locating parts.
RSN
http://myweb.absa.co.za/eric.brouwer/interface.htm