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DeFli: A Decentralized Network of RTL-SDRs on the Blockchain for UAV and...
Recently we came across a new project called DeFli and DeSky, which appears to be plans for a decentralized network of RTL-SDRs. The goal of the project is to provide decentralized access to ADS-B and...
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Decoding the Mexican Seismic Alert System (SASMEX Alerta sísmica)
Back in 2015 we posted about the dsame software, which is a decoder for the American Emergency Alert System (EAS) which is encoded with the SAME (Specific Area Message Encoding) protocol. EAS transmits...
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RFinder P10 – An Android Tablet with a built in Two Way Radio and RTL-SDR
Recently we came across a company called RFinder / AndroidDMR who are a shop selling custom made two way radios and Android Tablets with built in radio hardware. One of their new tablets that is...
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Building an OpenWebRX Server with an RTL-SDR Blog V3 for HF Monitoring
Thank you to Ramadhan (YD1RUH) who has put together a brief set of commands showing how to quickly get setup with OpenWebRX and an RTL-SDR Blog V3. OpenWebRX is a web based SDR program that allows...
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TechMinds: Receiving and Decoding Packets from the GreenCube Cubesat Digipeater
GreenCube is a CubeSat by the Sapienza University of Rome, and it is designed to demonstrate an autonomous biological laboratory for cultivating plants onboard a CubeSat. While this is an interesting...
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Video Demonstrating Hydrogen Line Detection with an RTL-SDR and WiFi Dish
Back in January 2020 we posted a tutorial showing how it's possible to detect and measure the galactic Hydrogen line using a simple 2.4 GHz WiFi dish, RTL-SDR Blog V3 and a filtered LNA. Since then...
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A Video Demonstration on Cracking a GSM Capture File
Over on YouTube Rob VK8FOES has been uploading some fairly comprehensive demonstrations and tutorials showing how to crack a GSM capture file which can be recorded with any SDR. It's well known now...
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An RTL-SDR telemetry decoder for the soon to be launched MRC-100 CubeSat
Thank you to Zoltan Doczi (HA7DCD) for submitting news about the MRC-100 Hungarian CubeSat that is scheduled to launch on a Falcon 9 on June 12. Zoltan notes that the MRC-100 is the successor to the...
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DragonOS: KrakenSDR and DF Aggregator Connected via a 1km WiFi Link
DragonOS is a ready to use Ubuntu Linux image that comes preinstalled with multiple SDR software packages including a tool called DF Aggregator, which can be used for radio direction finding with a...
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TechMinds: Detecting Meteors With Software Defined Radio
In his latest video Matt from the TechMinds YouTube channel has shown how it's possible to detect the RF echoes of meteors falling in the earths atmosphere which a software defined radio. The concept...
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OpenWebRX+ Updates: HFDL, ISM Band, FLEX, SELCALL decoders added
Back in March of this year we posted about an OpenWebRX fork called OpenWebRX+, which adds multiple built-in and ready to use decoders such as SSTV, AIS, CW and RTTY. OpenWebRX+ is a fork of the...
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Testing DAB Decoders: SDRAngel versus Welle.io
Thank you to the team from DXing.org for submitting their video where they compare the DAB decoding performance of SDRAngel and Welle.io using an RTL-SDR Blog V3 dongle. Digital Audio Broadcast (DAB)...
View ArticlePossible fixes for new versions of SDR# crashing with RTL-SDRs
SDR# (SDRSharp) is our recommend software for RTL-SDRs due to it's high popularity in the community, relatively simple to learn and use interface, and host of features and third party plugins...
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Meteor M2-3 Now In Orbit and Transmitting Weather Images
Meteor-M satellites are Russian owned weather imaging satellites that are in polar orbit. They transmit images to earth in the LRPT format at 137 MHz, making them almost as easy to receive as the older...
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TechMinds: Building a Handheld MILSAT SATCOM Antenna with 3D Printed Parts...
In his latest video Matt from the TechMinds YouTube channel shows us how to build a home made turnstile antenna for receiving the MILSAT SATCOM satellites where radio pirates from Brazil and other...
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KrakenSDR Low Power FM Transmitter Hunt
If you weren't already aware, KrakenSDR is our 5-channel coherent radio based on RTL-SDRs, and it can be used for applications like radio direction finding. KrakenSDR is in stock and can be purchased...
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Video on Meteor M2-3 LRPT, HRPT and Telemetry Reception
Over on YouTube dereksgc has another video on Meteor M2-3 reception. In the video Derek goes over the history of Meteor M launches and then goes on to test reception of the 3.4 GHz telemetry signal...
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Receiving Unintentional Voice Transmissions from GPS Satellites
Over on dereksgc's YouTube channel we've discovered a few more recent interesting videos from his satellite decoding series that people may be interested in. One from two weeks ago shows how it's...
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SDRSharp 1915 Released: RTL-SDR Crashes Fixed
Thank you to SDR# author Youssef for updating SDR# (SDRSharp) and fixing a recent bug that was causing RTL-SDR units to crash whenever the frequency was changed. We are putting this post out to inform...
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Building a DIY Portable 137 MHz Yagi Antenna for LRPT
Over on his YouTube channel dereksgc has uploaded the next video in his series on satellite reception. In this video he shows how to build a Yagi antenna tuned for 137 MHz, which is great for receiving...
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