When the International Space Station (ISS) orbit is not favorable for a direct Amateur Radio on the International Space Station (ARISS) contact with a particular school or location scheduled to speak with an astronaut, ARISS radio telebridge stations bridge the gap. Gerald Klatzko, ZS6BTD, of Parklands, South Africa, one of the “regulars” during the earlier years of the ARISS program, died on F…
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Source: ARRL