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Using an RTL-SDR to help Build Dynamic Spectrum Access Prototypes + DARPA...
Over on YouTube user Andre Puschmann has uploaded video showing his experiments with implementing dynamic spectrum access. Dynamic spectrum access is a upcoming technology that will allow the frequency...
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A new RTL-SDR based Portable ADS-B Kit for Pilots is on Kickstarter
Back in March we posted about the FlightBox, a portable RTL-SDR ADS-B 1090ES and 978UAT receiver built for use by pilots in small aircraft. 1090ES provides ADS-B which allows a pilot to see on a map...
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Receiving up to 4.5 GHz with an RTL-SDR and a $5 Directv Downconverter
KD0CQ has recently been experimenting with trying to receive signals at frequencies of up to 4.5 GHz with an RTL-SDR and downconverter. Since a typical R820T/2 RTL-SDR’s maximum frequency limit is...
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Receiving Iridium Satellites with a HackRF Portapack and Cheap Antenna
Recently Jared Boone, creator of the HackRF portapack posted on his blog about his experience with trying to receive Iridium satellite signals. The HackRF is 8-bit, ~0 – 6 GHz, RX/TX capable SDR, and...
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SDRplay Updates: Android Support, ADS-B Decoder Upgrades and Acquisition of...
The SDRplay team have been hard at work during the last few weeks. First they announced beta support for Android via SDRtouch, then they announced an improved ADS-B decoder, and finally they have just...
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Hydrogen Line Observation with an RTL-SDR
The RTL-SDR can be used for many interesting radio astronomy applications such as observing the Hydrogen line. Hydrogen atoms randomly emit photons at a wavelength of 21cm (1420.4058 MHz). Normally a...
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EM-ID: RTL-SDR based Tag-Less ID of Electrical Devices via Eletromagnetic...
Back in November 2015 we posted about Disney Research’s EM-Sense which was an RTL-SDR based smart watch that was able to actually sense and detect the exact (electronic) object the wearer was touching....
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GNU Radio for Windows + Decoding ATSC HDTV on GNU Radio for Windows
Recently an updated set of binaries and build scripts were posted for GNU Radio for Windows. GNU Radio is a graphical digital signal processing language that is compatible with many software defined...
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Using Aisdecoder to decode both AIS channels simultaneously
Recently SV3EXP wrote in to let us know that he has been documenting his experiences with trying to get aisdecoder to decode both AIS channels simultaneously. AIS stands for Automatic Identification...
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QSpectrumAnalyzer Updated to Version 1.4.0
QSpectrumAnalyzer is a Linux based opensource GUI front end for rtl_power or rtl_power_fftw and can be used with an RTL-SDR to scan for signal activity on wide swaths of the frequency spectrum....
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Building a very low cost satellite tracker for your RTL-SDR
A satellite tracker is a motorized unit that points a directional antenna towards passing satellites. Most satellites are not in a fixed orbit, and will fly over your head a few times a day and will be...
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Decoding the NOAA Weather Satellite Telemetry Beacons
It is well known that the NOAA satellites broadcast weather satellite images which can be received and displayed with an RTL-SDR and computer. What is less known is that there is a telemetry beacon...
View ArticleMonitoring Ionosondes and Creating Ionograms with a USRP and GNU Chirp Sounder
In the HF region between about 0 – 30 MHz it is common to see and hear “chripers” – signals which quickly sweep through the HF frequency band and produce an audible chirp. These chirps are actually...
View ArticleA Demonstration of the RTL-SDR Receiving WiFi and 2.4 GHz ISM with a Modded...
Back in April we posted about how KD0CQ found that he could receive signals up to 4.5 GHz with an RTL-SDR by using a $5 downconverter for DirecTV called the SUP-2400. The RTL-SDR can only receive up to...
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IF Average SDR# Plugin Updated
The IF Average tool is a RTL-SDR compatible plugin for SDR# which allows you to plot an average of the current spectrum shown in SDR#. This is especially useful for radio astronomers who often need to...
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Broadcasting DVB-S2 with the LimeSDR
The LimeSDR is a $299 USD software defined radio that has RX and TX capabilities, a tuning range of 100 kHz – 3.8 GHz, a 12 bit ADC and up to 61.44 MHz worth of bandwidth. It is currently seeking...
View ArticleSniffing ANT-FS with an RTL-SDR and MMDS Downconverter in Pothos
ANT-FS is a wireless file transfer protocol that is designed specifically for transferring files wireless between two devices. It is designed for ultra low power devices and typically runs on devices...
View ArticleAn RTL-SDR to RTL-SDR QSO with RTL-TRX: Transmit RTTY with the RTL-SDR
Back in 2014 oh2ftg discovered that the RTL-SDR could actually be used to transmit data by modulating leakage from its internal local oscillator. Now it seems that tejeez and oh2ftg have released a new...
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Building an ESP8266 Based Plane Spotter with an RTL-SDR Feeder
Living near Zurich airport, Daniel Eichorn wanted an easy way to show his house guests what planes are flying near him. Usually he opens up his Flightradar24 app on his phone, but he wanted a more...
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LuaRadio: New Flowgraph Based Digital Signal Processing Framework for SDR
LuaRadio is a new Digital Signal Processing (DSP) framework for software defined radios such as the RTL-SDR. It is similar to GNU Radio in that the flowgraph is composed of graphical blocks that can be...
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