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 ...

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 ...

I'm working on a little project using a RTL_SDR dongle in a Raspberry Pi. I have it successfully tuning using RTL_FM and outputting the audio over the onboard sound.