The Special Radio category covers unusual, niche and technically interesting radio communication systems that do not fit into ordinary consumer wireless, ham radio or standard broadcast categories. Topics include underground and cave radio, VLF and ELF communication, emergency radio systems, body-worn and referee intercoms, industrial wireless links, covert or low-probability-of-intercept communication concepts, maritime and aviation radio, railway and utility communication, telemetry, remote control systems, experimental antennas, legacy radio networks and specialized professional RF equipment. The articles focus on how these systems work, why they were developed, what frequencies and modulation methods they use, and where they are still relevant in modern communication technology.
The FIFA World Cup 2026 is not only the biggest football tournament ever staged. It is also one of the most complex radio frequency environments ever created for a sporting event. With 48 teams, 104 matches, 16 host cities and venues spread across Canada, Mexico and the United States, the…
On 27 June 2026, one of the most recognisable radio signals in British broadcasting history will fall silent. BBC Radio 4’s long wave service on 198 kHz is scheduled to close, ending almost 92 years of continuous long wave broadcasting from some of the United Kingdom’s most important transmitter sites….
When people hear the word “drone,” they usually think of aerial photography, surveillance, package delivery, or military reconnaissance. Few realize that one of the most promising applications of modern drone technology has almost nothing to do with cameras. Around the world, engineers, telecommunications companies, emergency response organizations, and military planners…
Modern sport is faster, louder and more technically demanding than ever before. Football, rugby, basketball, handball, volleyball, ice hockey and American football are no longer controlled by a single referee acting alone with a whistle and a notebook. Today’s officiating is a coordinated team operation. The main referee, assistant referees,…
A ring resonator fiber optic gyroscope is one of the most promising technologies in modern inertial navigation. It combines the proven advantages of fiber optic sensing with the sensitivity enhancement of an optical resonator. For industries that need precise angular rate measurement without relying on satellite signals, magnetic references or…
During the Cold War, the most visible symbols of military power were enormous, loud and unmistakably physical. Nuclear submarines disappeared beneath the oceans. Strategic bombers crossed continents. Ballistic missiles waited in hardened silos. Armored divisions trained for a possible war across Central Europe. Fighter aircraft became faster, radar systems became…
