In putty "force echo" appears to do the trick, at least now I can see what I am typing
, its unusual as the echo is normally on,,, anyway commands MRa00 shows Question mark ? MQ shows Question mark ? PC0 shows Question mark ? and GD%% certainly does freeze the radio, hitting enter on the radio does not end the session, the only way to get any response from the radio after typing GD%% is to unplug it and plug it back in. its the same problem if I try to clear the select channels with aorctrl software.