We’ve become used to software-defined radio as the future of radio experimentation, and many of us will have some form of SDR hardware. From the $10 RTL USB sticks through to all-singing, all-dancing models at eye-watering prices, there is an SDR for everyone. What about the idea of an SDR without any external hardware? Instead of plugging something into your Raspberry Pi, how about using the Pi i
![The Raspberry Pi 3B+ As An SDR – Without The SDR!](https://cdn-ak-scissors.b.st-hatena.com/image/square/1ae5895c6477ed5da82eaffb0c55d8cbf60aa072/height=288;version=1;width=512/https%3A%2F%2Fhackaday.com%2Fwp-content%2Fuploads%2F2018%2F03%2Fraspberry-pi-model-b-plus-featured.jpg)