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RTL-SDR.com Broadcast AM Block High Pass Filter Now for Sale
Back in October we released a broadcast FM bandstop filter for removing strong signals in the 88 – 108 MHz region. Today we’re releasing a new broadcast AM high pass filter (BCAM HPF) with a 2.6 MHz...
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Reverse Engineering Honeywell 345 MHz Home Automation Sensors with an RTL-SDR
OpenHAB is an open source home automation software program which is designed to interface and manage all the various sensors and systems in an automated house. One problem however, is that many...
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A Design for a Robust, Selective and Flexible RF Front-End for Wideband...
Recently Sivan Toledo wrote in wanting to share an academic paper he wrote together with Itamar Melamed, both from Tel-Aviv University in Israel. The freely available paper describes the design and...
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First Steps Towards Decoding HD Radio
Programmer Phil Burr wrote in and wanted to share his newest code which is a partial implementation (no audio) of the iBiquity IBOC HD Radio standard. HD Radio is a proprietary broadcast radio protocol...
View ArticleBuilding a DIY Carbon Fibre Yagi Antenna with 3D Printed Parts for 20€
Over on his blog author ‘Tysonpower’ has written about a DIY Carbon Fibre Yagi antenna that he’s built for only 20€. The antenna is very lightweight thanks to a 12mm diameter carbon fibre pipe which is...
View ArticleListening to February 2017 HAARP Experiments with an HF Capable SDR
This year at the end of February HAARP (High Frequency Active Auroral Research Program) scientists are planning to run several experiments that involve transmission. HAARP is a high power ionospheric...
View ArticleReverse Engineering Signals with the Universal Radio Hacker Software
Thanks to RTL-SDR.com reader M Kizan who notified us about a Python based digital signal reverse engineering software program called ‘Universal Radio Hacker’ which is developed by Johannes Pohl. The...
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Soft66IP: Network Connected RTL-SDR with rtl_tcp
Previously from JA7TDO who is a RTL-SDR builder in Japan we’d seen the Soft66RTL and Soft66Q which are both modified RTL-SDR units that are capable of receiving HF as well. To receive HF the Soft66RTL...
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Searching for giga-Jansky fast radio bursts from the Milky Way with a global...
A few days ago a University research paper titled “Searching for giga-Jansky fast radio bursts from the Milky Way with a global array of low-cost radio receivers” was uploaded to the Cornell University...
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An RTL-SDR Based Wireless Backscatter Soil Moisture Sensor Network
Recently researcher Spyros Daskalakis wrote in to us and wanted to share his Masters thesis research which is titled ‘Environmental Scatter Radio Sensors with RF Energy Harvesting‘. The research...
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Building an RTL-SDR “Moto Mod”
One nice feature of modern Motorola smartphones is that some models can accept ‘mods’, which are essentially phone cases that snap onto the back of the phone and interface via some exposed data pins....
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RTL-SDR Tutorial: GPS Decoding and Plotting
The RTL-SDR can be used to receive, decode and plot Global Positioning System (GPS) data in real time. To do this the RTL-SDR must be connected to a GPS antenna. Extremely cheap $5 or less active GPS...
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Simple NOAA/Meteor Weather Satellite Antenna: A 137 MHz V-Dipole
Over on his blog Adam 9A4QV (seller of various RTL-SDR related goods including the LNA4ALL) has just made a post detailing a build of a high performance super simple NOAA/Meteor M2 weather satellite...
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Radio For Everyone: Testing Several ADS-B Antennas Under $50
Over on his blog ‘Radio for Everyone’ Akos has shared results submitted to him by FlightAware forum user ‘Nitr0’ which compares several ADS-B antennas that cost under $50 USD. The antenna that we most...
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re-DECTed: An RTL-SDR DECT Decoder
Over on GitHub programmer ‘znuh’ has uploaded a new RTL-SDR compatible GNURadio based tool for DECT decoding. DECT is an acronym for ‘Digital Enhanced Cordless Telecommunications’, and is the wireless...
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b4000Hz: A New STD-C Inmarsat Decoder
A new STD-C Inmarsat decoder called b4000Hz has recently been uploaded over at CodePlex by microp11. The decoder is Windows based and simply listens to the demodulated Inmarsat STD-C audio from a...
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Patching rtl_fm for use with 15+ RTL-SDR Dongles
Enrique is working on a project which would record FM audio as MP3 files. To do this he uses rtl_fm with several RTL-SDR dongles. However, a major roadblock was that he found that adding five or more...
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Real-Time decoding of Meteor-M2 on Linux
Recently RTL-SDR.com reader Mark wrote in and wanted to share his modified version of otti-soft’s GNU Radio flowgraph for decoding Meteor-M2 weather satellite images on Linux. The modified version...
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An R820T2 Breakout Board
The R820T2 is the tuner chip used on most RTL-SDR dongles. It is also used on the Airspy, a more advanced higher end SDR. All in all, it is a very good tuner chip, but it is mostly limited by the...
View ArticleT——o SDR: A MultiMode SDR Receiver Program
Recently a reader of RTL-SDR.com wrote in and submitted a link to T——–o SDR, which is an RTL-SDR compatible multimode SDR decoder program for Windows. (The website is in Italian but is easily...
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