64: Software Radios

Pragmatic returns to talk about a recent melding of traditional radio technology and software that are now dominating the telecommunications world. With Carmen Parisi and John Chidgey. Miscellaneous Links: Reverse Engineering a Qualcomm baseband (PDF) Morse code Radio Narrowband Pragmatic 39: Look Ma, No Wires Pragmatic 5: The Next Ubiquitous Thing Quadrature amplitude modulation Frequency mixer Nyquist–Shannon sampling theorem Digital signal processor IQ modulation tutorials: Alan Wolke W2AEW Analog Zoo Intro to SDR Kits: Software Defined Radio: $40ish SDR using a hacked European HDTV setup (RTL2832U). The chip has a feature where it can spit out the raw IQ data instead of the specific demodulated TV stream. It’s definitely hacky and it can’t transmit but it’s a relatively low cost intro into SDRs. Adafruit SDR: Basic set-up from Adafruit that’s all contained in one easy USB dongle using the same IC as above. Ossmans Kit: Not exactly a beginner’s kit in the sense that it’s cheap ($300 plus antenna) but probably one of the most full-featured starter’s out there sold by Mike Ossmann. He’s currently got a 9 video course available online to go with the HACK RF. Mike Ossmans Video Course or he also teaches two day seminars on SDRs at security conferences across the globe. Support Pragmatic on Patreon Episode sponsor: Shopi: Shopi is a collaborative shopping list app that’s simple and easy to use with great features like pocket-lock, smart ordering and real-time collaborative updating. A shopping list is a special To Do list and Shopi addresses that use case very well. It’s ad-free for the first month so why not check it out. Visit sapient-pair.com/engineeredto learn more.