About RTL-SDR

This information about the rtl-sdr project is from Osmocom (4/21/2012):

(Please support Osmocom as they have been a/the great resource for rtl-sdr development)

 

rtl-sdr

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 the V4L/DVB kernel developer  Antti Palosaari.

Specifications

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 so far is 2.8 MS/s. The frequency range is highly dependent of the used tuner, dongles that use the Elonics E4000 offer the widest possible range (64 – 1700 MHz).

Supported Hardware

The following devices are known to work fine with RTLSDR software:

VIDPIDtunerdevice name
0x0bda0x2832all of themGeneric RTL2832U (e.g. hama nano)
0x0bda0x2838E4000ezcap USB 2.0 DVB-T/DAB/FM dongle
0x0ccd0x00a9FC0012Terratec Cinergy T Stick Black (rev 1)
0x0ccd0x00b3FC0012Terratec NOXON DAB/DAB+ USB dongle (rev 1)
0x0ccd0x00d3E4000Terratec Cinergy T Stick RC (Rev.3)
0x0ccd0x00e0E4000Terratec NOXON DAB/DAB+ USB dongle (rev 2)
0x185b0x0620E4000Compro Videomate U620F
0x185b0x0650E4000Compro Videomate U650F
0x1f4d0xb803FC0012GTek T803
0x1f4d0xc803FC0012Lifeview LV5TDeluxe
0x1b800xd3a4FC0013Twintech UT-40
0x1d190x1101FC2580Dexatek DK DVB-T Dongle (Logilink VG0002A)
0x1d190x1102?Dexatek DK DVB-T Dongle (MSI DigiVox? mini II V3.0)
0x1d190x1103FC2580Dexatek Technology Ltd. DK 5217 DVB-T Dongle
0x04580x707f?Genius TVGo DVB-T03 USB dongle (Ver. B)
0x1b800xd393FC0012GIGABYTE GT-U7300
0x1b800xd394?DIKOM USB-DVBT HD
0x1b800xd395FC0012Peak 102569AGPK
0x1b800xd39dFC0012SVEON STV20 DVB-T USB & FM

What is a SDR?

From Wikipedia:

A software-defined radio system, or SDR, is a radio communication system where components that have been typically implemented in hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a personal computer or embedded computing devices.[1] While the concept of SDR is not new, the rapidly evolving capabilities of digital electronics render practical many processes which used to be only theoretically possible.

A basic SDR system may consist of a personal computer equipped with a sound card, or other analog-to-digital converter, preceded by some form of RF front end. Significant amounts of signal processing are handed over to the general-purpose processor, rather than being done in special-purpose hardware. Such a design produces a radio which can receive and transmit widely different radio protocols (sometimes referred to as waveforms) based solely on the software used.

Software radios have significant utility for the military and cell phone services, both of which must serve a wide variety of changing radio protocols in real time.

In the long term, software-defined radios are expected by proponents like the SDRForum (now The Wireless Innovation Forum) to become the dominant technology in radio communications. SDRs, along with software defined antennas are the enablers of the cognitive radio.

  • giz

    Just started investigating the SDR with a new stick “Conceptronics CTVDIGUSB2 ” which is reported as “VID 1d19 / PID 1102″ by Windows and – according to Your list – is equivalent to “Dexatek DK DVB-T Dongle (MSI DigiVox? mini II V3.0)”.
    Tuner in my device is a FC2580, so this info might be worthful for Your list.

    Trying to get it work as SDR witz Win7hp, but no success by now.

    73 de giz

  • Petter

    I keep getting “usb_claim_interface error -6″ :

    # lsusb -s 3
    Bus 001 Device 003: ID 0bda:2838 Realtek Semiconductor Corp.
    # git rev-parse HEAD
    5f88049c0cf27b89570c8954cfd3a03d042fa486
    # ./rtl_test
    Found 1 device(s):
    0: ezcap USB 2.0 DVB-T/DAB/FM dongle

    Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle
    usb_claim_interface error -6
    Failed to open rtlsdr device #0.

    Any ideas or hints?

  • kukuryku

    Urzadzenie jest zajęte przez inny sterownik. lsmod | grep dvb, następnie rmmod rtl…. i teraz powinno być ok.

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