I should say that I am a big fan of FM. Mostly at 100 kHz bandwidth. It's a very robust and redundant signal. Like AM, it includes the carrier, and redundant sidebands. Of course Amateur's then want to smash it down to get voice only, and the typical smashing is what destroys it's usefulness and fidelity. Three years ago David and Brady experimented with Manchester 2FSK and optimized 4FSK.
Since Amateurs have already launched tons of FM and SSB analog systems, I don't see what can be gained by doing it again. No one will remember you. Well, except the young kid who catches it flaming through the atmosphere on re-entry. The thing driving most Amateurs today is SDR. Three years ago I owned none, today I own four, including my latest acquisition, the LimeSDR mini. The reason is, that legacy radios can't do optimized waveforms. Imagine running 4FSK without being artificially squashed into 5 kHz. But some will be horrified at the wider spectrum. Who cares, it's a satellite going Mach 7, it will be over your house once a week for less time than it takes a microwave to cook soup :-) Anyway, that's my thoughts on FM. 100 kHz, with digital stereo. Steve
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