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For decades, mysterious shortwave radio broadcasts transmitted eerie sequences of numbers, tones, and robotic voices to ...

When Russia’s obscure shortwave station UVB-76 crackled to life again, it did more than startle radio hobbyists. It revived fears that President Vladimir Putin is willing to brandish nuclear tools, or ...

Made by KiwiSDR NZ in New Zealand, the KiwiSDR 2 is a software-defined radio with its own computer, packed into a small metal box.

This is one of the coolest things I’ve learned recently: Foreign intelligence agencies still use good ol’ radio to share top secrets. Even with all the powerful tech at their fingertips, radio use in ...