I did a quick search and didn't see anything so please excuse me if this has been asked before.
Assuming the timing is right to attempt to contact the ISS, what is the best ISS callsign to use?
If there is not a US ham aboard, should I still call NA1SS, or will I have better luck calling RS0ISS (assuming there is a Russian aboard). Or just call for the ISS?
Assuming they are listening and can here me, what is most likely to get a response?
Assuming the timing is right to attempt to contact the ISS, what is the best ISS callsign to use?
If there is not a US ham aboard, should I still call NA1SS, or will I have better luck calling RS0ISS (assuming there is a Russian aboard). Or just call for the ISS?
Assuming they are listening and can here me, what is most likely to get a response?