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
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
Drew,
It could also cut out the HT/ELK people, I'm kidding but since Ray with ELK gave me an ELK antenna for my HRU Forum, why not give him some "ink". I also did some comparison tests with the Arrow at I'm able to receive the satellite at AOS and LOS better with the ELK so far, more scientific tests to follow.
73- Pete WB2OQQ www.massapequanyweather.com http://www.qrz.com/db/WB2OQQ?
On 1/12/2011 9:53 AM, Peter Portanova wrote:
Drew,
It could also cut out the HT/ELK people, I'm kidding but since Ray with ELK gave me an ELK antenna for my HRU Forum, why not give him some "ink". I also did some comparison tests with the Arrow at I'm able to receive the satellite at AOS and LOS better with the ELK so far, more scientific tests to follow.
You are correct Pete, Ray at Elk has really been a good friend to us. The Arrow has just been such an iconic part of the last ten years or so of satellite operation, it's sort of become like Xerox or Kleenex in the vernacular.
73, Drew KO4MA
Drew,
That's funny, I was thinking that too, we just associate Arrow with portable Satellite operations. I was just so impressed that Ray would just give me an antenna, and I didn't even own one, that was special.
As a result of the publicity of giving away an ELK antenna in my Satellite forum, the room was packed and people outside looking thru the glass, but they had a raffle ticket! Drew, at that point I knew that we don't get many opportunities to talk about the work AMSAT does and the need for membership and donations with bigger groups, I spent five valuable "satellite" minutes connecting my talk to AMSAT and if I added value then you need to transfer that feeling to your AMSAT involvement. I hope my message got thru to just a few.
73- Pete WB2OQQ www.massapequanyweather.com http://www.qrz.com/db/WB2OQQ?
participants (3)
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Andrew Glasbrenner -
Howie DeFelice -
Peter Portanova