Douglas,
No, this hasn't happened - but not from a lack of trying.
In 2006, at the very end of Bill McArthur's ISS tour, there was an effort to see if Bill could make a QSO via AO-51. Bill had already completed WAS, WAC, and DXCC working hams around the world, and this was considered the last big thing he could do from the ISS radio. Time was tight, and probably the biggest reason why this didn't work. Instructions were sent up to the ISS, and stations were recruited on the ground in locations compatible with both available AO-51 passes and Bill's available time. Bill was heard through AO-51, but no QSOs were made.
I am not aware if there have been other attempts since 2006 for an ISS crewmember to work an amateur satellite from the ISS. Maybe if Doug Wheelock can get another ISS tour, this could be tried again.
IIRC crewmembers that used the ISS cross-band repeater to work stations on the ground are not using a different radio to work through the ISS repeater. Since the cross-band repeater was a function of the Kenwood dual-band mobile transceivers, the crews would use the microphone and speaker on that radio to work stations. Really no different than if the cross-band repeater function on those radios is turned off, or if the crews used the GE/Ericsson HTs to work stations.
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK or http://twitter.com/WD9EWK
On Thu, Dec 21, 2017 at 2:35 PM, Douglas Quagliana dquagliana@gmail.com wrote:
Has anyone ever had a successful two-way QSO with an orbiting ISS astronaut through an amateur radio satellite transponder?
Regards, Douglas KA2UPW/5