The comments from Larry, VA3LK echo my thoughts to a large extent. I feel that, FOR CERTAIN SITUATIONS e.g. transatlantic attempts, BPSK as implemented in Coherent/Africa is specifically designed for
Lastly, and with reference to recent comments on the reflector, perhaps a more correct term than "machine modes" would be "machine-assisted modes"! Regards Kevin, G1HDQ At the risk of winding everyon