Difference between revisions of "Software Defined Radio"
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* [http://cubicsdr.com/ Cubic SDR] | * [http://cubicsdr.com/ Cubic SDR] | ||
* [https://www.rtl-sdr.com/ RTL-SDR] | * [https://www.rtl-sdr.com/ RTL-SDR] | ||
[[Category:Educational_Gatherings]] | |||
Latest revision as of 12:32, 18 November 2017
Introduction
Computers and amateur radio have a long history. Computer-controlled radios are ubiquitous and digital modes are becoming more and more a part of RF communication. Software-defined radio is another way computers are intersecting with radio.
Definition
SDRs are devices where software replaces some portion of the signal-processing chain traditionally performed by hardware. One could also say that SDRs perform digital signal processing on radio waveforms.
It is important to differentiate computer-controlled radios from software-defined radios. Most computer-controlled radios are traditional radios that allow the operator to use a computer (rather than inputs on the radio) to select frequency, toggle filters, and perform other actions.