[amsat-bb] Re: FO-29

Joe Fitzgerald jfitzgerald at alum.wpi.edu
Fri May 4 15:25:17 PDT 2007

Bruce Robertson wrote:

 >I'm intrigued by the ability of these Japanese birds to operate over 
 >Japan, thereby conserving power ... Is this GIS technology ... >or is 
there a more simple approach at play?

The usual approach is "don't speak unless spoken to".  A command 
receiver operates continuously on board the spacecraft, but the 
transmitter, transponder or other high power payload only turns on in 
direct response to commands and then turn itself off some short time 

-Joe KM1P

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