Jan Schiefer · Hamstrng knowledge
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DVB-T dongles based on the Realtek RTL2832U can be used as a cheap SDR, since the chip allows transferring the raw I/Q samples to the host, which is officially used for DAB/DAB+/FM demodulation. The possibility of this has been discovered by Eric Fry ( History and Discovery of RTLSDR ). Antti Palosaari has not been involved in development of rtl-sdr.
The RTL2832U outputs 8-bit I/Q-samples, and the highest theoretically possible sample-rate is 3.2 MS/s, however, the highest sample-rate without lost samples that has been tested wit regular USB controllers so far is 2.4 MS/s. A stable sample-rate of 3.2 MS/s without lost samples is only possible with the Etron EJ168/EJ188/EJ198 series of host controllers due to their specific maximum latency . The frequency range is highly dependent of the used tuner, dongles that use the Elonics E4000 offer the widest pos
Note: Many devices with EEPROM have 0x2838 as PID and RTL2838 as product name, but in fact all of them have an RTL2832U inside. br Realtek never released a chip marked as RTL2838 so far. The following devices are known to work fine with RTLSDR software:
Jan Schiefer · Hamstrng knowledge