[amsat-bb] Rotor Interface Question

Is anyone using the Fox Delta ST rotor interface with WispDDE?

I'm wanting a rotor-only interface to older analog rotors and do not have controllable radios. I use Orbitron for tracking and it communicates to WispDDE.

Any other suggestions for low cost interface? I'd like to use one that has position feedback but will use the WB4APR opto-triac type drivers for the old rotors.

Thanks

Curt

KU8L