Hello Christopher,

you were wondering, why the Doppler shift was on the transmit side for the AO-85 satellite. Well, there is always Doppler shift on the uplink and downlink frequencies. Up and down are separated by using different frequency bands of 2m (VHF,145MHz) and 70cm (UHF,435MHz). As Doppler shift scales with frequency, it is obvious that the effect is thrice as severe on the 70cm frequency as opposed to 2m. Amsat Oscar 85 (AO-85) has a U/V transponder, which means the transmit direction towards the satellite is on UHF and thus experiences the greater Doppler shift. Some other satellites have V/U transponders, where the bigger shift effect will be seen on the output of the satellite. 

Another entry for the list of things to explain, in a separate show or the amateur round table: "What is this Doppler shift all about?" The best way to demonstrate it would probably be a recording of the telegraphy telemetry beacon, many of the birds have, where you can easily hear the pitch of the tone changing while the satellite passes.

BTW, I was not even aware that there was an AO-85... I have to keep more updated on this. :-)

Regards,
Michael