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Receiving and acquiring GPS positions with an RTL-SDR dongle and GPS antenna
GPS experimenter and blog author e.p. has recently been posting about his experiments in which he uses an RTL-SDR dongle to receive GPS satellite signals and acquire a position lock. To receive GPS...
View ArticleDEFCON 23 – LTE Recon and Tracking with RTLSDR
Back on Dec 5 we posted about some Defcon 23 talks that were released from the Wireless Village set of talks. Recently some more talks from other tracks have been released and one of interest to our...
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SDRPlay RSP API Updated to Version 1.8.0
The SDRplay team have recently released a major update to their API and drivers. The new version is 1.8.0 and they write that it should remove the DC offset, reduce in band images from strong signals,...
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Signal Direction Finding with an RTL-SDR, Raspberry Pi and REDHAWK
Something we missed posting about from last year was this presentation on “RasHAWK”, a direction finding system (pdf) built out of a Raspberry Pi, an RTL-SDR and four antennas on a 4 way switch running...
View ArticleDeocoding Orbcomm with MultiPSK 4.31 and an RTL-SDR
MultiPSK is a signals decoding program with many available decoders to choose from. It is also able to directly connect to the RTL-SDR, or be used via a virtual audio cable. The latest beta version...
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RTLSDR-Airband V2 Released
Back in June of 2014 we posted about the released of a new program called RTLSDR-Airband. RTLSDR-Airband is a Windows and Linux compatible command line tool that allows you to simultaneously monitor...
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CANFI: Cheap Automatic Noise Figure Indicator Updated to V2.7
Back in July 2014 we posted about the CANFI (Cheap Automatic Noise Figure Indicator) system. The CANFI system is a set of hardware components that include an RTL-SDR and a corresponding software...
View ArticleDSD+ Updated to Version 1.101
DSD+ (Digital Speech Decoder+) is a popular decoding tool that can be used to listen to P25, DMR and other unencrypted digital speech signals. Recently DSD+ has been updated from version 1.074 to...
View ArticleDecoding End Of Train and Head Of Train Packets with an RTL-SDR
Back in March 2014 we showed a video of a RTL-SDR user decoding End Of Train (EOT) and Head of Train (HOT) signals. Head of Train (HOT) and End of Train (EOT) signals are used on trains to transmit...
View ArticleRunning the Airspy ADSB decoder at full speed on a Raspberry Pi 2
Bob W9RAN recently wrote in to let us know about some developments he and Youssef have had with getting the Airspy to function at full speed on a Raspberry Pi 2 with ADS-B decoding. Bob and Youssef...
View ArticleThe Best RTL-SDR Posts of 2015
Things are developing fast in the software defined radio and RTL-SDR world. This year we’ve seen some amazing projects and developments occur. Here’s our highlight reel. January In January we first...
View ArticleComparing a GPS Patch vs a DIY Patch Antenna on L-Band with the MIX4ALL
Over on YouTube user Adam Alicajic has recently been uploading videos that show him testing a prototype of his upcoming product the MIX4ALL. The MIX4ALL is an RF downconverter which will allow the...
View ArticleTalk by Micheal Ossmann at Toorcon 2015: Rapid Radio Reversing
Toorcon is a yearly conference that focusus on information security related topics. At the 2015 Toorcon conference Micheal Ossmann (inventor of the HackRF SDR) gave an interesting talk about reverse...
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Solving the Mystery of a Keyless Vehicle Entry RF Deadspot in a Carpark with...
The Brisbane Times ran a story today that discussed an interesting RF phenomenon that was solved using a FUNcube dongle software defined radio. The Funcube dongle is a SDR similar to the RTL-SDR. The...
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Combining the bandwidth of two RTL-SDR dongles in GNU Radio
The maximum usable and stable bandwidth of an RTL-SDR is about 2.4 MHz. In order to get larger bandwidths it is possible to combine two or more dongles, although doing so comes with a big limitation –...
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Hamradioscience.com’s Review of the SDRplay
The author of hamradioscience.com has posted a review of his thoughts on the SDRplay RSP software defined radio. The SDRplay is a SDR that is a $150 USD software defined radio that can be considered as...
View ArticleDemonstrating the ARM Radio
Back in November 2015 we posted about the ARM Radio, a minimalist direct sampling software defined radio that runs almost entirely on an ARM processor on a STM32F429 discovery board. It can tune from...
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Investigating QRM from Powerline Ethernet Devices with a Funcube Dongle
Over on his blog Andrew has posted a good writeup where he determines the QRM (interference) effects of a PLT (power line transmission) device. PLTs are also known as ethernet/internet over powerline...
View ArticleMore talks from Defcon 23
Some more SDR and RF related talks from Defcon 23. See our previous posts [1][2] for other talks that we posted previously. Colby Moore – Spread Spectrum Satcom Hacking Recently there have been several...
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Combining the bandwidth of multiple RTL-SDRs: Now working in GQRX!
A few days ago we posted how Oliver, an RTL-SDR experimenter, managed to (incoherently) combine the bandwidths of two RTL-SDR dongles to create a 4.4 MHz FFT display in GNU Radio. Now Oliver has taken...
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