This is a talk given to the IEEE Southeast Michigan Section’s EMC Society by Karen Burnham, KE8GVH. While there is a short commercial for the presenter’s company, it’s a pretty good explanation of software-defined radio (SDR) and how SDRs compare to superheterodyne radios. Over half of the talk explains how SDRs work and what you can do with them.
While the presenter says that she’s not going to talk about ham radio applications, the applications she does talk about certainly are useful for amateur radio operators. For example, one of Burnham’s demonstrations is the spectral purity of an FRS radio. You could also get a feel for how pure your HT signal is, realizing that what you get out of a cheap SDR dongle is not really calibrated.
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