Space and the sky

Operating through and off things in orbit.

Amateur satellitesOrbiting repeaters and transponders.Working satellitesTracking, Doppler and a pass.ISS and ARISSTalking to astronauts.EME (moonbounce)Reflecting signals off the Moon.High-altitude balloonsHam radio payloads in the stratosphere.Radio astronomy and solar monitoringListening to the sky.