[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: Some more details of XW-1



It really does sound pretty cool. I'm already looking forward to chasing it across the sky with my handheld!

73 to all,

Tim
-------------- Original message from James Duffey <JamesDuffey@comcast.net>: -------------- 


> This sounds like a nearly ideal LEO satellite. 
> 
> An FM cross band repeater to get newcomers to use the satellite 
> without new investments. 
> 
> A linear transponder for more serious work that the FM ops can move up 
> to. It seems to me that when the FM ops see what others are doing with 
> the linear transponder on the same satellite it will be a good 
> incentive to move up. More QSOs, better DX, less QRM. 
> 
> And a digital transponder for those so inclined. 
> 
> Kind of one stop shopping. 
> 
> It could be a bit higher, but one can't hope for everything. - Duffey 
> 
> 
> 
> 
> On Oct 5, 2008, at 9:56 AM, Michael Chen, BD5RV wrote: 
> 
> > Hi, guys, 
> > 
> > Here are some details about upcoming Chinese XW-1: 
> > 
> > Orbit: Sun Synchronous Orbit 
> > Altitude: 499km 
> > Inclination: 98 degrees 
> > Period: 94 minutes 
> > 
> > Weight: 35kg 
> > Size: 550mm * 350mm 
> > Temperature: -20 to +45C 
> > Power: Li ion battery: 16Ah 
> > Long-term maximum power: 8W 
> > Short-term maximum power: 18W 
> > 
> > Payload: 
> > Amateur radio payload: 5.2kg 
> > Youngster's experiment payload: 1.6kg 
> > CMOS camera: 0.2kg 
> > 
> > About amateur radio payload: 
> > Beacon: 435Mhz, CW 20dBm 
> > Linear transponder: RX: 145Mhz, TX: 435Mhz, 40KHz, 30dBm 
> > FM Transponder: RX: 145Mhz, TX: 435Mhz, 16KHz, 30dBm 
> > Digital store and forward transponder: RX: 145Mhz, TX: 435Mhz, 
> > 16KHz, 30dBm 
> > 
> > 145Mhz RX Antenna: 2dBi, 135 degree, LHCP, unpacked by remote 
> > control after entering the orbit. 
> > 435Mhz TX antenna: 2dBi, 135 degree, RHCP, unpacked by remote 
> > control after entering the orbit. 
> > 
> > 
> > 
> > Michael, BD5RV/4 
> > _______________________________________________ 
> > 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 
> 
> -- 
> KK6MC 
> James Duffey 
> Cedar Crest NM 
> 
> 
> 
> 
> 
> _______________________________________________ 
> 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 
_______________________________________________
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



AMSAT Top AMSAT Home