When Russia’s obscure shortwave station UVB-76 crackled to life again, it did more than startle radio hobbyists. It revived ...
For decades, mysterious shortwave radio broadcasts transmitted eerie sequences of numbers, tones, and robotic voices to anyone with a receiver. Known as numbers stations, these signals often began ...
Made by KiwiSDR NZ in New Zealand, the KiwiSDR 2 is a software-defined radio with its own computer, packed into a small metal ...