... The photography of the underlying surface can be directly transmitted to Earth in the course of a live communications session via ham radio. ... Conducting real-time radio communications sessions from on-board ISS RS to exchange digital images. ... Conversations of the space flight participant of Visiting Mission 15 with ground users, taking place in the course of real-time ham radio communications sessions, as well as video images uplinked/downlinked to/from ISS in real-time via ham radio. ...