![]() USB 3 ports, for some unknown reason, are best for sample rates higher than 2.4 MS/s. For the data transfer mode USB 2 is required, 1.1 won't work. The highest safe sample rate is 2.4 MS/s but in some situations up to 3.2 MS/s works without dropping samples. The dynamic range for most dongles is around 45 dB. For both kinds the tuner error is ~30 +-20 PPM, relatively stable once warmed up, and stable from day to day for a given dongle. The R820T use a 3.57MHz intermediate frequency (IF) while the E4000s use a Zero-IF. The dongles with an E4000 tuner can range between 54-2200 MHz (in my experience) with a gap over 1100-1250 MHz in general. has a clear introduction introduction too. gr-osmosdr - gnuradio compatible module.rtl_sdr, rtl_tcp, rtl_test, etc - command line capture tools and utilities.librtlsdr - contains the major part of the driver.Who knows? A lot of people other people have helped build it up from there.įor the best information stop reading this page right now and go to the rtl-sdr wiki - OsmoSDR by the Osmocom people who created, ![]() Originally meant for television reception the discovery of the debug/raw mode was perhaps first noticed by Eric Fry in March of 2010 and then expanded upon and implemented by Antti Palosaari in Feb 2012 who found that these devices can output unsigned 8bit I/Q samples at high rates. RTL-SDR and GNU Radio with Realtek RTL2832U software defined radio receiver.
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