Category: How Radio Works
What Is FM Stereo and How Does It Work?
FM stereo broadcasting has been a cornerstone of radio listening since the 1960s. While many people enjoy the rich, full sound of stereo radio without giving it a…
A History of Radio Broadcasting in the UK: From the BBC Monopoly to Digital
Radio broadcasting in the United Kingdom began with the British Broadcasting Company in November 1922. What started as a handful of transmitters serving a small number of cities…
Radio Frequency Interference: Causes, Types, and How Broadcasters Manage It
Radio signals do not exist in isolation. Every transmitter shares the spectrum with hundreds of others, and maintaining clear, interference-free reception requires both careful frequency planning and ongoing…
The Studio-to-Transmitter Link: How Audio Gets From the Booth to the Tower
The Studio-to-Transmitter Link A radio broadcast does not originate at the transmitter tower. The actual programme is created in a studio, which may be located in a town…
The Transition From Analogue to Digital Broadcasting
Radio broadcasting spent most of the twentieth century as an analogue medium. The signal was a continuous wave — amplitude-modulated in AM, frequency-modulated in FM — and it…
How Radio Towers Are Built and Maintained
The radio mast is the most visible part of any broadcast operation. It is also one of the most technically demanding structures in the world to build, maintain,…
Radio Frequency Propagation: Why Signals Travel Differently at Night
Anyone who has listened to AM radio after dark has noticed something strange: stations from far away come in clearly, while local stations they rely on during the…