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Re: xmit sstv to the ISS



Hi Bob,

I think, a full duplex repeater will not work. 
It's like the FM satellites - everyone can hear what is going on - BUT -
only very few do it!

73, Mike
DK3WN




-----Ursprüngliche Nachricht-----
Von: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] Im
Auftrag von Robert Bruninga
Gesendet: Montag, 20. Oktober 2008 17:34
An: 'amsat'
Betreff: [amsat-bb] Re: xmit sstv to the ISS

The only possible practical SSTV uplink scenarios that I can
think of are:
1) Full duplex repeater so everyone can hear whats going on the
uplink
2) Completely secret uplink for one station per orbit (assigned
like a school contact)

I don't see any possibility at all of a full 40 seconds of clear
uplink otherwise...

Good luck.
Bob 

> -----Original Message-----
> From: amsat-bb-bounces@amsat.org 
> [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Steve
> Sent: Sunday, October 19, 2008 4:02 PM
> To: amsat
> Subject: [amsat-bb] Re: xmit sstv to the ISS
> 
> 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
> 
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