Since MIR times I have always been obsessed by the fact that more than 90% of the bandwidth available is lost.
Is a 1200bps AX25 system what we really need?Probably not.
We operate in a environment were only one station can "hear" all the others during operations. This particular condiction inevitably causes AX25 to fail repetitively because the same packets are retransmitted over and over again.
When we add the fact that the ISS is available for traffic not more than 1 hour a day for any particular ground location and that the speed is only 1200bps (half duplex) we immediately realize that its time for us to think about something really new.

I was trying to imagine how a 802.11b system would do the job (assuming the doppler problem solved somehow). Its just an Idea. If you have better ones please go ahed.

Alain iz6byy, ww3ww