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Listening to NXDN with SDRSharp, the AuxVFO Plugin and DSD+
Over on YouTube user John Miller has uploaded a video showing how he receives NXDN digital audio using a combination of SDR#, the AuxVFO plugin and DSD+. He writes: I have it set with 5 auxiliary VFO’s...
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Spying on Keyboard Presses with a Software Defined Radio
Last year Milos Prvulovic, a computer science researcher uploaded some videos to YouTube showing how he was able to remotely and covertly record the keystrokes of a target laptop in another room...
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Building a Simple Downconverter for the RTL-SDR
Over on YouTube Adam Alicajic, seller of the LNA4ALL low noise amplifier has uploaded a video showing how to create a simple downconverter using a 1.3 GHz local oscillator and an LNA4ALL. A...
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New RTL-SDR Radio Data System (RDS) Decoder: Redsea
Signals hacker Oona Räisänen has released on GitHub a new software tool for the RTL-SDR called Redsea. On her blog she explains that Redsea is a Linux and OSX compatible perl based command line Radio...
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Testing GNU Radio on the Raspberry Pi 2
Earlier this year the successor to the hugely popular Raspberry Pi, the Raspberry Pi 2 was released. The Raspberry Pi 2 is a mini embedded computer that can run Linux. Over on the RS Design Spark...
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Recovering 433MHz Messages with RTL-SDR and MATLAB
Recently RTL-SDR.com reader Ilias wrote in to let us know about a post he uploaded to his blog showing how he was able to decode data from a device transmitting at 433 MHz using an RTL-SDR and MATLAB....
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SDR-J Updated to Version 0.98
The RTL-SDR compatible DAB Radio receiving software SDR-J has recently been updated to version 0.98. DAB stands for digital audio broadcasting and is a type of digital radio signal used in some...
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The SatNOGS Story
In a previous post we talked about the SatNOGS project which aims to provide low cost satellite ground stations (where one critical component is currently an RTL-SDR dongle) along with free networking...
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The International Space Station is Transmitting SSTV Images
Happysat, a reader of RTL-SDR.com has written in to remind us that the International Space Station (ISS) is currently transmitting slow scan television (SSTV) images out of respect of the 80th birthday...
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New GUI for rtl_power: QSpectrumAnalyzer
A new GUI for rtl_power has been released by programmer Mikos. Although there are already several rtl_power GUIs and spectrum analyser applications that exist, Mikos developed QSpectrumAnalyzer because...
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RTL-SDR Tutorial: Measuring filter characteristics and antenna VSWR with an...
By using an RTL-SDR dongle together with a low cost noise source it is possible to measure the response of an RF filter. Also, with an additional piece of hardware called a directional coupler the...
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New ADS-B Android App for Europe
Android app programmer Nikos recently wrote in to let us know about his new app called “Track your flight Europe”. His app can be used together with an RTL-SDR and USB OTG cable to track aircraft via...
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Visualizing the electromagnetic spectrum with Frequensea and an RTL-SDR
Over on YouTube user Frederik De Bleser has uploaded a video showing his new open source toolkit called Frequensea which can be used for visualizing the electromagnetic spectrum with an RTL-SDR or...
View ArticleUsing a USRP E310 for Digital Video Downlink and Scanning on a Drone
Balint, one of the researchers at Ettus Research (the company behind the USRP range of software defined radios) has recently uploaded a video to YouTube showing one of his projects where he is...
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Decoding Differential GPS Beacons with an RTL-SDR, Speclab and SDR#
Over on his blog “RTL-SDR DX” dewdude has been exploring the reception and decoding of Differential GPS (DGPS) signals. DGPS signals are transmitted by government authorities in the long wave band at...
View ArticleVideo Showing Decoding of DGPS Beacons with SDR# and MultiPSK
Following on from our last post where dewdude showed how to decode DGPS signals, Frank K2NCC has uploaded a video on YouTube showing DGPS decoding in action. In his video Frank uses an Airspy plus...
View ArticleListening to an NFC Polling Signal from a Nexus 7 with an RTL-SDR
Over on YouTube user 2e26tenW has uploaded a video showing reception of the second harmonic of an NFC polling signal with his RTL-SDR. NFC stands for “Near Field Communication” and is a technology that...
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Fingerprinting Aircraft with Aircraft Scatter
Over on a Finnish aircraft spotting forum, one poster OH7HJ has been using the “Aircraft Scatter” technique to fingerprint individual aircraft (in Finnish, use Google Translate to read in English)....
View ArticleDecoding and Plotting VOR Signals with an RTL-SDR: Part 4
Previously we posted about Will’s (aka hpux735) project [1] [2] where he has been using an RTL-SDR dongle to help understand and decode aircraft navigation VOR signals. VOR is an acronym for VHF Omni...
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New Web Based RTL-SDR Remote Control Software: YouSDR
Recently Kristian, a reader of our blog wrote in to let us know about a new software project he found that allows you to use your RTL-SDR remotely through a web interface. The web interface runs on...
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