As radio station transmitters go, [Mr. Carlson]’s Gates BC-250-GY broadcast transmitter is actually pretty small, especially for 1940s-vintage gear. It has a 250 watt output and was used as a ...

[Pete]’s interest was piqued when he read about a 10 mW 10 M QRP transmitter design in a vintage Radio magazine from the late ’50’s and decided to replicate it. We aren’t sure, but it ...

The Dwingeloo telescope, designed to observe signals at low frequencies, detected the farthest human spacecraft when it went ...

Working through a puzzling shutdown of the spacecraft’s main radio transmitter, engineers at NASA’s Jet Propulsion Laboratory ...