Brian, Let the left-over New Year's cheer let me get REALLY technical for a moment.
Theoretically, you are correct in stating that FSK & AFSK are identical. I have made this same point myself on many occasions. However, in real-world situations, they are not identical -- they can be distinguished from each other. Since we are using an imperfect SSB transmitter to generate the AFSK, there is some residual carrier & opposite sideband being transmitted along with the desired signal. If operating at full legal limit (1500W), 60dB of carrier or opposite sideband suppression still results in 1.5W of carrier or opposite sideband being transmitted -- definitely capable of being detected at some distance from the transmitter. A similar situation exists for CW or MCW. Which does PowerSDR generate?...... Happy New Year to one and all! 73, Ray, K9DUR http://k9dur.info _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
