I believe this would be impractical. There are a number of satellite operators that don't read these messages. Of those that do, there are bound to be some who don't wish to comply with the rules for one reason or another. If only a hand-full don't cooperate the resulting pandemonium would encourage those that do cooperate to abandon the program or give up.
If you've ever been in a DX pileup, you'll know what I'm talking about.
Steve .. AI7W
----- Original Message ----- From: "Mr Jeffrey L Ross" Sent: Sunday, October 19, 2008 15:42 UTC Subject: [amsat-bb] xmit sstv to the ISS
Hi folks, one member just reminded me about what is the chance one station uplinking one picture uniterrupted? Maybe we could cordinate here and use are calls as a your turn my turn such as abzzz goes first as his starts with A, or use the last letter of the call such as kc8gkf and everyone with f in there call (last letter) thats there day to xmit up. something like that I think we could work out. That would cut down on the stations trying to xmit up. Or someone could pass out times to the users (get a list here) to xmit up. Anyother ideas?
kc8gkf