A patent was recently granted for what is purported to be an improved mode of achieving AM modulation. It is described in the patent
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1 &u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=7016659.WKU.&OS=PN/7016659&RS=PN/70 16659 I wonder if this could be implemented in the SDR software? 73, Mont - K0YCN
