[amsat-bb] Re: Some more details of XW-1

[James Duffey]

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
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--
KK6MC
James Duffey
Cedar Crest NM