The program works nicely on Linux and MacOS and I was particularly impressed that the GQRX App package included the utilities commonly used with GQRX and the RTL-SDR device. Alex has done yeoman work developing GQRX from GNU Radio and the various radio tuner devices out there.

I’d like to take a minute to recognize Alexandru Csete, OZ9AEC. This post talks about my experimentation with the RTL-SDR receiver and GQRX software defined radio application built using the GNU Radio architecture and blocks. A number of projects develop software defined radio receivers or transmitters on top of these products.

This radio can be purchased new for less than the used price of the previous generation of traditional radios.Īlso inevitable, software developers would begin open source software projects to develop a digital radio architecture and signal processing blocks for that architecture. Although a traditional amateur transceiver in appearance, a software defined radio is inside resulting in dramatic price-performance improvements. The iCom 7300 transceiver is a premier example of this new generation of radios. Most of what is already written on the Internet neglects to mention a couple of details the Moocher learned the hard way. This post will describe the initial exploration of GQRX and RTL-SDR here at Dismal Manor. In the early days of digital signal processing, pioneers realized that many modulation and demodulation techniques could be performed by digital computation.Īs computers became cheaper and faster and integrated circuits became cheaper and faster, it was inevitable that the guts of radio receivers and transmitters would be mostly digital and that computers would do much of what went on inside new radios.

Sdr sharp for mac