Sorry Ken and Tim...
I guess my real question should have been..."do the school ground stations compensate for doppler on their uplinks during their contacts?"
Roger ----- Original Message ----- Subject: RE: [sarex] ARISS events
ISS is just like any other satellite when it comes to Doppler. The satellite does not adjust its frequency. ISS transmits on 145.80 and each ground station adjusts their Doppler according to their relative position to the ISS.
Kenneth - N5VHO
-----Original Message----- Subject: Re: [sarex] ARISS events
Just a quick question that came to mind after today's school contact...
Do the astronauts know how to or do they adjust for doppler during the contacts? I know from the ground station that we might be dealing with +/- 8 kHz up there...do they have "steps" built into their radio?
Thanks and keep up the good work!