Does anyone know if the FT-1000D is true FSK or is it AFSK?
I tried to follow the circuit diagram but got lost, I suspect it is AFSK.
de Paul, W8AEF
1) AFIK, there are two types of "FSK":
a) FSK that is generated internal to the rig where the manufacturer
'keys' an audio tone -- an 'internal' AFSK if you will, that the rig
manufacturer calls 'FSK'. This can be OK as hopefully the rig maker is
controlling many of the variables such as level, mark/space switching,
etc versus the operator jamming his sound card into the mic jack.
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