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Slovenian University Student & Security Researcher Almost Jailed for...
Dejan Ornig, a 26 year old student at the University of Maribor’s Faculty of Criminal Justice and Security was recently almost jailed for finding a security flaw in Police TETRA communications in his...
View ArticleMore L-Band Videos from 9A4QV: Testing 2x LNA4ALL + Filter + Patch, Receiving...
Adam 9A4QV has once again uploaded three new videos to YouTube, all related to L-band satellite reception. The first video shows how much L-band reception can be improved by using two LNA4ALL low noise...
View ArticleSDRplay receiving a WPX CW CQ Contest
Over on YouTube user Mile Kokotov has uploaded a video showing him receiving a WPX CQ CW (morse code) contest on his SDRplay RSP. The SDRplay RSP is a $149 USD software defined radio with a tuning...
View ArticleBuilding a DIY Powered USB Hub for using an RTL-SDR on a Raspberry Pi
One problem that sometimes arises when using embedded single board computers like the Raspberry Pi is that they often cannot provide enough current to power devices through the USB port. Over on...
View ArticleUsing the Airspy on an Odroid C2
The Odroid C2 is a $40 single board computer with a 2 GHz ARM-A53 quad core CPU and 2GB of RAM. Compared to a Raspberry Pi 3 it is more powerful and costs about the same. The Airspy R2/Mini is a...
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Review of the Airspy Mini
The Airspy Mini is a recently released $99 USD software defined radio with a tuning range of 24 MHz to 1800 MHz, 12-bit ADC and up to 6 MHz of bandwidth. The Mini is the younger brother of the $199 USD...
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...
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Fan Cooling the RTL-SDR
Over on his Japanese blog Nobu has uploaded a post showing how he modified his RTL-SDR dongle to be air cooled via two small PC fans (post is in Japanese but can be read with Google Translate – right...
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Receiving WSPR with a Direct Sampling Modified RTL-SDR
Over on YouTube user Veryokay has uploaded a video showing how he was able to receive WSPR (Weak Signal Propagation Report) signals at 14 MHz with his direct sampling modified RTL-SDR. WSPR is a HF...
View ArticleRTL-SDR Stock Antenna Teardown and VNA Measurements
Over on his YouTube channel oh2ftg has uploaded two new RTL-SDR related videos. In the first video he does a tear down on the stock standard antennas that are supplied with most cheap RTL-SDR units. He...
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Stealing a Drone with Software Defined Radio
PHDays (Positive Hack Days) is a yearly forum with a focus on ethical hacking and security. During this years forum which took place in June, the organizers set up a competition where the goal was to...
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An ADS-B Decoder for the GOMX-3 Satellite ADS-B Repeater
The GOMX-3 is a CubeSat which carries an experimental ADS-B repeater. Since it is a satellite the experimental receiver hopes to be able to receive ADS-B from orbit, then beam it back down to earth at...
View ArticleReverse Engineering a Commercial Inmarsat Front-End to use with the RTL-SDR
Over on his YouTube channel Adam 9A4QV has uploaded a video showing a commercial Inmarsat front end which he reverse engineered to use with his RTL-SDR. The front end is a duplexor, which allows both...
View ArticleUsing the SDRplay and SDRTouch on an Android Mobile Phone
A few months ago the popular SDRTouch software for Android added support for the SDRplay RSP. The RSP is a $149 USD software defined radio with a tuning range of 100 kHz to 2 GHz and a 12 bit ADC. Over...
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LimeSDR CrowdFunding Closing in Four Days: 80% Funded
The LimeSDR is a new transmit capable software defined radio with a 100 kHz – 3.8 GHz frequency range, 12-bit ADC and 61.44 MHz bandwidth which is currently seeking crowdfunding. At the time of this...
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SDRplay Releases SDRuno: Free SDR Software for the RSP
The SDRplay is a $149 USD RX only software defined radio with a 12-bit ADC and up to 8 MHz of bandwidth that can tune from 10 kHz – 2 GHz. We consider it and it’s competitors the Airspy R2/Mini to be...
View ArticleRemote Spectrum Monitoring Drone with OpenWebRX, Raspberry Pi and an RTL-SDR
Recently Zoltan of rfsparkling.com wrote in to us to show us how he combined efforts with András (programmer of the OpenWebRX software) to create a proof of concept remote spectrum monitoring drone....
View ArticleUsing the SUP-2400 Downconverter with an LNA and RTL-SDR to Receive 2.4 GHz...
Earlier in June YouTube user T3CHNOTURK posted a video demonstrating him receiving signals above the maximum 1.7 GHz range of the RTL-SDR by using a modified SUP-2400 downconverter. Back in April it...
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