During the Cold War, radio waves became one of the most contested and monitored forms of communication between East and West. While the Iron Curtain physically divided Europe, radio broadcasts from the West still penetrated deep into Eastern Bloc countries — but not without a fight. These signals were perceived…
With the widespread adoption of SDR (Software Defined Radio) technology, it has become possible for almost anyone to explore the radio spectrum from home. With an inexpensive SDR receiver and the right software, you can receive a wide variety of signals — including civil aviation and even some military radio…
Weather balloons, also known as radiosondes, are one of the most exciting targets for SDR (Software Defined Radio) hobbyists. These automated weather measurement devices are launched hundreds of times daily worldwide, collecting atmospheric data and transmitting it via radio signals to ground stations. With SDR technology, it’s possible to decode…
Our modern world is filled with radio waves: mobile phones, Wi-Fi networks, Bluetooth devices, and satellite communications. However, there is a unique place in the eastern United States where all of these are strictly regulated: the National Radio Quiet Zone (NRQZ). The purpose of this zone is to protect the…