This article contains 100 original four-choice questions (with explanations for all options) for the First-Class Amateur Radio Operator exam.Conclusion First | What You Can Learn from This BookSome ca ...

Stanford researchers use background electrical noise as a signal to transmit data with up to 1,000 times less energy.

A wireless communication technique that encodes digital data in reflected thermal noise, potentially reducing transmitter ...

Stanford researchers recently revealed how a seemingly physics-defying wireless communication technology works. The new ...

A 5G-enabled medical device can contain advanced sensors, precise signal-processing circuits and a high-speed cellular modem ...

On September 1 1939, with the start of the Second World War, the only television channel in Britain was mothballed.

A father and son’s experiments involving a hot dog and a 12,000-kilowatt AM radio tower captivated the internet.

Project Monarch combines miniature solar-powered radio tags and smartphone detections to trace monarch butterflies across ...

Radio Ángulo de Holguín warns that it may cease broadcasting due to electrical desynchronization between its headquarters and ...

Scientists have demonstrated a remarkable new antenna that resembles a lightsaber, using a laser to create a tunable beam of plasma capable of transmitting radio waves. The technology could ...

Retired Syrian officer Said Jawish recounts how intercepted messages, a distinctive rooftop antenna and a carefully timed power cut led investigators to Cohen’s Damascus apartment | Anadolu ...