The mysterious Persian-language transmission began about 12 hours after the start of the US-Israeli bombing campaign against Iran. It was jammed five days later. Is it a coded message for US agents in ...

Shortwave radio listeners around the world have reported hearing mystery broadcasts in Persian on a new 'numbers station' ...

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 ...

A team of UC Berkeley scientists has painstakingly analyzed billions of radio signals received over fifteen years and have zeroed in on 100 that are most likely to be sent by extraterrestrial ...

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.