An amateur radio repeater used to be a complex assemblage of equipment that would easily fill a 19″ rack. There would be a receiver and a separate transmitter, usually repurposed from commercial units ...

Sometimes the best builds aren’t anything new, but rather combining two well-developed hacks. [Marc] was familiar with RTL-SDR, the $30 USB TV tuner come software defined radio, but was surprised no ...

With a Raspberry Pi, a low-cost SDR dongle, and free software, you can build your own ADS-B receiver to track aircraft in real time. This setup not only lets you watch the skies but also contribute ...

What if you could broadcast signals across the globe using just a credit-card-sized computer and a handful of components? It might sound like a scene from a sci-fi novel, but with a Raspberry Pi and ...