Hi Rick,
That is something that I have been looking to do also but so far I
haven't found a circuit for a 1750 SSB tranceiver. I was looking for
this to try some digital work. If we don't start trying to do 2 way
qso's then the FCC will never see the need for an amateur band either at
1750 meters or 500 KC bands.
73,
Mike K1EG