RTL-SDR Support Package Hardware SetupTo implement features in the Communications Toolbox™ Support Package for RTL-SDR Radio, you must establish communication between the host and the radiohardware.If you are connecting two radios to the same host, see after installing the support package but beforeinstalling the USB driver. Install USB Driver ( Windows) USB Driver Installation PreparationThe support package installer guides you through installing the drivers required forusing the RTL-SDR device as a software-defined radio (SDR) receiver.

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Before you begin,remove all nonessential USB devices from your computer so that you do not accidentallyreplace the driver for a different device.These instructions are for installing the USB driver for one RTL-SDR device. Toinstall more than one RTL-SDR device for use with this support package, see. Insert RTL-SDR Radio into USB Port. NoteSome USB 3 ports do not recognize the RTL-SDR radio correctly and can result ina connection error. Your hardware configuration might require you to plug theRTL-SDR device into a USB 2 port.Click Next. The installer opens the Zadig software in aseparate window.Install USB Driver with Zadig SoftwareIf the Zadig software displays a User Control Account prompt, thenthe software requires administrative privileges to install the USB driver.

ClickYes to continue.Follow the directions in the Support Package Installer window to install Zadig devicedrivers.Try putting the RTL-SDR radio in a different USB port.Make sure the radio works by trying it in a different computer.Check the, and topics that resolveyour problem.If you still cannot discern the problem, contact Tech Support at. Install USB Driver (Linux)The support package installer guides you through installing the drivers required forusing the RTL-SDR device as a software-defined radio (SDR) receiver. The installer uses thefiles you downloaded during setup to install the RTL-SDR library. RTL-SDR Install DriverIf you see this page, the installer uses the files you downloaded during setup toinstall the RTL-SDR library. The installation process requires permission to copy files tosystem directories.

You might be prompted for your sudo password before the installationcan continue.If you are prompted, enter your sudo password in the MATLAB ® Command Window, and then return to the installer. If you do not have a sudopassword, click Cancel and contact your network administrator toinstall this software. Insert RTL-SDR Radio into USB Port.Try putting the RTL-SDR radio in a different USB port.Make sure the radio works by trying it in a different computer.If you do not see any radios listed after the installation is completed, thedigital TV (DVB) driver may be superseding the RTL-SDR driver.

If the device is in useby the DVB driver, the installer cannot access it. You might need to unload orblacklist the kernel module.

See.Check for topics that resolveyour problem.If you still cannot discern the problem, contact Tech Support at. Install USB Driver (Mac)The support package installer guides you through installing the drivers required forusing the RTL-SDR device as a software-defined radio (SDR) receiver. The installer uses thefiles you downloaded during setup. Insert RTL-SDR Radio into USB Port.

What is software-defined radio?A software defined radio system is a system in which the components are implemented in software instead of the traditional way of hardware implementation. It consists of an RF front-end followed by and analog- to-digital converter which provides samples to a host computer. The rest of the processing is done solely in software.Each student in the class will/or already gotten a TVB-T USB dongle based on the Realtek RTL2832U chip. This dongle was originally made to receive and decode the European standard digital television. Last February, a V4L/DVB kernel developer, discovered that there is a device mode in which raw samples can be captured and transferred to a host computer. This feature enables this device to be used as an inexpensive ”Software Defined Radio”.This is a photo of the dongle:The E4000 Elonics chip is a digitally controlled tuner.

The tuner selects a frequency band around a target center frequency and demodulates it to baseband. In our case, the RTL2832U chip serves as an analog to digital converter that samples the baseband signal and outputs the samples to a host computer through a USB2 port.The device uses IQ baseband demodulation and sampling. Here are some. Driver Installation InstructionsAll the installation instructions below were derived from the following links:.Here, we will provide you with binaries and basic installation that will enable you to get tune to a frequencyand get samples into Matlab or GNU Octave. rtltest -trtltest -tFound 1 device(s):0: ezcap USB 2.0 DVB-T/DAB/FM dongleUsing device 0: ezcap USB 2.0 DVB-T/DAB/FM dongleFound Elonics E4000 tunerSupported gain values (18): -1.0 1.5 4.0 6.5 9.0 11.5 14.0 16.5 19.0 21.5 24.0 29.0 34.0 42.0 43.0 45.0 47.0 49.0Benchmarking E4000 PLL.E4K PLL not locked for 51000000 Hz!E4K PLL not locked for Hz!E4K PLL not locked for Hz!E4K PLL not locked for Hz!E4K range: 52 to 2226 MHzE4K L-band gap: 1114 to 1241 MHzWindows.Download and extract the archive.You should see the file zadig.exe and two directories: x32 and x64. These correpond to 32bit and 64bit rtlsdr binaries.Plug your RTL device in for the first time, Windows may request a driver or automatically install a driver from Microsoft - this is OK as it will be replaced in the next few steps. Don't install the software on the CD that comes with the device.Run the Zadig.exe file and you should see the following with an empty list:.Click on Options and select “List All Devices”:.Choose the one that says “Bulk-In, Interface (Interface 0)”.

This should be the primary endpoint of your RTL device:.In the box to the right of the green arrow make sure “WinUSB” is chosen - not libusb or libusbk. The big button underneath will say “Replace Driver” or “Reinstall Driver”. Before you proceed make sure the USBID matches the VID/PID.Note that if you insert the dongle into a different USB port you may have to use Zadig again. It seems that you can change which driver is loaded depending on the USB port used.

Intel centrino ultimate n 6300 agn driver for mac. Go to the directory where the file was downloaded and double-click the ep.txt file to begin the installation.

So you could use one USB port for RTLSDR and another port for using the dongle to watch DVB-T with the supplied Windows application.In a command line window, run the test. rtltest.exe -tFound 1 device(s):0: ezcap USB 2.0 DVB-T/DAB/FM dongleUsing device 0: ezcap USB 2.0 DVB-T/DAB/FM dongleFound Elonics E4000 tunerSupported gain values (18): -1.0 1.5 4.0 6.5 9.0 11.5 14.0 16.5 19.0 21.5 24.0 29.0 34.0 42.0 43.0 45.0 47.0 49.0Benchmarking E4000 PLL.E4K PLL not locked for 51000000 Hz!E4K PLL not locked for Hz!E4K PLL not locked for Hz!E4K PLL not locked for Hz!E4K range: 52 to 2226 MHzE4K L-band gap: 1114 to 1241 MHzLinux.Marcus D. Leech has kindly integrated the forementioned build steps into his gnuradio installation script at. This is the most user-friendly option so far. It will install the entire gnu-radio suit, which is lots of fun!.Otherwise, follow the instructions on to compile and install binaries from source.After installation, in a command line window, run the test. rtltest -tFound 1 device(s):0: ezcap USB 2.0 DVB-T/DAB/FM dongleUsing device 0: ezcap USB 2.0 DVB-T/DAB/FM dongleFound Elonics E4000 tunerSupported gain values (18): -1.0 1.5 4.0 6.5 9.0 11.5 14.0 16.5 19.0 21.5 24.0 29.0 34.0 42.0 43.0 45.0 47.0 49.0Benchmarking E4000 PLL.E4K PLL not locked for 51000000 Hz!E4K PLL not locked for Hz!E4K PLL not locked for Hz!E4K PLL not locked for Hz!E4K range: 52 to 2226 MHzE4K L-band gap: 1114 to 1241 MHzGetting data into Matlab and GNU OctaveThere are a couple of ways to capture data and transfer it into Matlab. The most simple way is using the rtlsdr executableto capture data and save it into a file.

Then, reading the data from a file into Matlab. The other way is usingrtltcp which enables communication with the device over TCP connection. I've written several matlab functions that canbe used to interact with the device directly from Matlab. Unfortunately these do not work in GNU octave as they use Matlab built-in java interpreter.

I will release GNU octave code soon.Download and extract the archive. It contains all the code to work with the device from Matlab.Using rtlsdr to capture to a fileExample: to tune to 88.5Mhz and set the sample rate to 2.4Mhz use. y = loadFile('capture.bin');You will see that the samples are complex!This is because the device uses IQ baseband demodulation and sampling to represent a single side of the spectrum. Here are some and about Quadrature demodulation and sampling.Because of the automatic gain, in many cases the first couple of seconds of capture will not be useful. You should therefore discard them.An alternative is to use manual gain, but you have to be careful not to overrange when the signal is strong.

The Supported gain values (18): -1.0 1.5 4.0 6.5 9.0 11.5 14.0 16.5 19.0 21.5 24.0 29.0 34.0 42.0 43.0 45.0 47.0 49.0.Example: to tune to 88.5Mhz and set the sample rate to 2.4Mhz and maximum gain use. rtlsdr -s 2400000 -f 88500000 -g 49.0 capture.binUsing rtltcp to capture and control the device directly from Matlabrtltcp comes with command line options which can be used to start the capture with specific frequency and rate. This is useful to save timebut it is also possible to start rtltcp without and options, in which case it will start with default parameters.

From Matlab it is possible tochange these.Example: to start a tcp erver with default parameters of tuning to 88.5Mhz and sample rate of 2.4Mhz. soc = rtlsdrconnect;% open local tcp socket to rtltcp dummy = rtlsdrgetData(soc,2.4e6);% get 1 second worth of samples, and throw away y = rtlsdrgetData(soc,2.4e6);% get 1 second worth of samples soc.close;% close socketImmediately after invoking rtlsdrconnect, the device will capture data and buffer it. To flush the buffer, you can either usertlsdrreset, or to read data till the buffer is flushed.To change frequency to 162.4Mhz and rate to 1Mhz and then capture data in Matlab use.