Bruce, thanks for the pointer; it made for some very interesting reading.

Like Dave says SIX FEET? Wow!

My requirement is to transmit just a few mm, so I'm hoping I could get away without using any extra hardware at all. The question I'm wondering about, considering the *very* modest range requirement, would I need to modulate the Debugout signal, or just feed it to the MOSFET driving the coil every few 100s of ms (the rest of the time the coil wouldkeep getting its 32 KHz for power transfer).

BTW, I had no idea of the existence of the 16F639. Sure opens up loads of possibilities!

Regards,

Anand