On 1/12/2011 9:22 AM, Howie DeFelice wrote:
What if we tried using SSB on the uplink and FM on the downlink as an experiment sometime. If the uplink passband was left a little wide, several stations could still be intelligible at once, assuming they weren't on the exact same frequency, not to mention a cw signal or two off to the edges. The DSP between the ears can work pretty good at separating signals sometimes. Not a good mode for handheld operation but may be worth a try just to see how well it works.. Howie AB2S _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
We run that exact mode sporadically, including just two weeks ago for Straight Key Night. It works well for experienced portable ops, and SSB capable base stations, but cuts out all the HT and Arrow guys. I think those HT/arrow guys are the prime users and target audience for AO-51, and the other groups can play on the often empty transponder satellites anytime they wish.
73, Drew KO4MA AMSAT VP Operations