WSPR on nano satellite?

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DS1SBO
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WSPR on nano satellite?

Dear,
This is DS1SBO from Seoul.
I'm a nb in all HAM activities so please bear with me.

I'd like to hear some advice on utilizing WSPR for small satellite like cubesat.
Currently building COMMS for the satellite which will be launched this August.

Almost fixed the design but just found WSPR on the internet.

Still trying to figure out WSPR but wants to utilize low power communication method in HAM AMSAT band.

Is this experiment meaningful or is WSPR constrained to earth activity?

currently using AFSK modulation in U/V band for the COMMS, which is not good for SNR and therefore consumes too much power.

Any advice from OM will be very welcomed,

Thank you