6 Jun
2011
6 Jun
'11
4:09 p.m.
What requirements are there for a valid QSO over the ISS digi? Is it the same as AO-51 where it is just an exchange of callsign and grid? Can it be done through the Comment text of an APRS HT like the VX8GR or THD72? Or is a tnc needed or software like UISS?