[amsat-bb] Re: AO-51 SSB uplink

[Andrew Glasbrenner]

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 		 	   		
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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