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

George Henry ka3hsw at att.net
Thu Dec 21 18:38:03 UTC 2017

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
Sent: Thursday, December 21, 2017 10:53 AM
Subject: Re: [amsat-bb] Has anyone made a satellite QSO with an orbiting

    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

    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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