Add Yahoo as a preferred source to see more of our stories on Google. Illustration: MH370 plane on blue background with radio signals being emitted around itt Transmissions from amateur radio ...

Nick’s Signal Spot is a new feature in which Nick Langan explores RF signals, propagation, new equipment or related endeavors. First, the broken white lines on the Pennsylvania Turnpike asphalt become ...

Reginald Fessenden, transmitting the first radio signal on Christmas Eve 1906, marked a revolutionary moment. Before that, voices and music were never transmitted, and signals were mostly Morse code.