[amsat-bb] Has anyone made a satellite QSO with an orbiting ISS astronaut?

[George Henry]

Hopefully someone from ARISS will chime in if I am wrong, but I believe that
the astronauts are only allowed to use frequencies that have been
pre-approved and ground-tested for safety with the ISS subsytems.  


Also, you would only have to correct for the doppler shift of the satellite
you are listening/transmitting to.  The ISS would have to correct for the
doppler on their end.

George, KA3HSW


-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Douglas
Quagliana
Sent: Thursday, December 21, 2017 10:53 AM
Cc: AMSAT -BB
Subject: Re: [amsat-bb] Has anyone made a satellite QSO with an orbiting
ISSastronaut?

Friends,
    Having hosted an ARISS contact myself earlier this year, I am well
aware of direct contacts
between the astronauts and someone on the ground.

    The relevant part of the question was the part about the QSO being
*THROUGH an
AMATEUR RADIO SATELLITE TRANSPONDER*.

    If you are aware of a success (or a failed attempt) I would be
interested in knowing
which astronaut and which amateur radio satellite was used.

    Lastly, does anyone have a technical references for correcting
calculating the Doppler
for a QSO from ISS through a satellite to the ground?  (And no, you can't
just change
the tracking program's ground station latitude/longitude every second to
match the ISS
satellite subpoint.)

Thanks and 73,
Douglas KA2UPW/5
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