Hi Many years ago I had a G3PLX Mk II board which was interfaced to a RTTY system to send and receive AMTOR. It was basically very close to the AMT-1 system without the modem. I think I have the board still but in a modified form and I have no data on the board at this stage. It did work extremely well for me when used with an ST6 type TU. So too did the KC7WW software used with the same TU.
Regards Gerry/EI9FV
