![]() Unlike the cheap dongles, it includes a transmitter that allows it to be used as a simple antenna or filter analyzer with the addition of a directional coupler. As with the RTL2832 dongles, software is available to use it as a receiver or spectrum analyzer. ![]() ![]() It is still part of my travel toolkit, but when I can, I make room for an Ettus Research USRP B200. ( See “Software-Defined Radios Help Explore RF Spectrum,” July 11, 2012). Two years ago, I wrote about using an inexpensive RTL2832-based DVB/DAB USB dongle as a spectrum analyzer and receiver.
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