Remoticon Video: Learning The Basics Of Software-Defined Radio (SDR)

Have you dipped your finger in the ocean of SPT? While radio, defined by hacker software, has been a hot topic for years, it can be a little daunting to try it for the first time. Here is your change to put your feet under you the SDR review seminar presented by Josh Conway at Hackaday Remoticon in 2020

Josh’s presentation begins with a clear definition of SDR before moving on to an overview of the hardware and software that is there. Hardware designs for radios can be quite easy to build, but they will be limited to one protocol – for example, an FM radio cannot listen to a 433 Mhz wireless bell. The SDR comes out of this by moving to a piece of radio hardware that can be reconfigured to work with protocols simply by making changes to the software that controls it. This makes radio hardware more expensive, but also means that you can listen to (and sometimes transmit) a wide range of devices such as this wireless bell or tire pressure sensors, but also radio-based infrastructure such as aircraft transponders and satellites. for the weather.

This is the quick start you want, as it explains a lot of melts at the exact depth. The hardware review covers RTL-SDR, ADALM-PLUTO, HackRF, KerberosSDR and BladeRF (which we just introduced over the weekend used for the WiFi procotol). For software, Josh summarizes GQRX, SDR #, SDRAngel, ShinySDR, Universal Radio Hacker, Inspectrum, SigDigger, RPITX, GnuRadio Companion, and REDHAWK. He also takes us through a wide range of antenna types that are there before addressing questions from workshop participants.

If the SDR is still missing from your toolbox, now is a great time to look at it again. Once you get through the “healthy world” scene, there’s something to explore these great tricks for testing RF emissions we like in another Remoticon talk.