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Visualizing the electromagnetic spectrum with Frequensea and an RTL-SDR
Over on YouTube user Frederik De Bleser has uploaded a video showing his new open source toolkit called Frequensea which can be used for visualizing the electromagnetic spectrum with an RTL-SDR or...
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A Faster Method for Decoding Meteor M2 Weather Satellite Images
Over on YouTube user max30max31 aka IZ5RZR has uploaded a video that shows a faster method for decoding Meteor M2 weather satellite images on a Windows system. The Meteor-M N2 is a Russian weather...
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Decoding Differential GPS Beacons with an RTL-SDR, Speclab and SDR#
Over on his blog “RTL-SDR DX” dewdude has been exploring the reception and decoding of Differential GPS (DGPS) signals. DGPS signals are transmitted by government authorities in the long wave band at...
View ArticleVideo Showing Decoding of DGPS Beacons with SDR# and MultiPSK
Following on from our last post where dewdude showed how to decode DGPS signals, Frank K2NCC has uploaded a video on YouTube showing DGPS decoding in action. In his video Frank uses an Airspy plus...
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Low Pass Filter for RTL-SDR Direct Sampling Mode
Over on his blog (in Japanese) Nobu has been working on prototyping a 14 MHz low pass filter (LPF) product for direct sampling modified RTL-SDR dongles (in Japanese, use Google Translate). Direct...
View ArticleListening to an NFC Polling Signal from a Nexus 7 with an RTL-SDR
Over on YouTube user 2e26tenW has uploaded a video showing reception of the second harmonic of an NFC polling signal with his RTL-SDR. NFC stands for “Near Field Communication” and is a technology that...
View ArticleRTL-SDR Live Discussion Net at 8pm EDT Tonight
Over on Reddit amateur radio hobbyist K2RWF has posted about a live discussion and QA session that he and some others will be having on a amateur radio net about RTL-SDR dongles. The discussion begins...
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Analyzing the Radio Spectrum in Hong Kong with an RTL-SDR
Over on his blog, Gough Liu has made a post showing an analysis of the Hong Kong radio spectrum that he made while he was on a trip. In his analysis Gough used a locally bought DMB-T TV dongle (not...
View ArticleRTL-SDR Front End Filter Demonstration
Over on YouTube user kugellagers has uploaded a video demonstrating the effect of some front end filters he constructed in order to reduce the effects of intermodulation from strong local AM and FM...
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Some E4000 RTL-SDR Noise Figure Measurements
Over on Avian’s blog author Tomaz has posted about some noise figure measurements he has done with an E4000 RTL-SDR dongle. To do the measurements he used a vector signal generator and used the...
View ArticleDecoding and Plotting VOR Signals with an RTL-SDR: Part 4
Previously we posted about Will’s (aka hpux735) project [1] [2] where he has been using an RTL-SDR dongle to help understand and decode aircraft navigation VOR signals. VOR is an acronym for VHF Omni...
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Direct Sampling 14 MHz Low Pass Filter and Galvanic Isolator for the RTL-SDR...
Previously we posted about Japanese RTL-SDR experimenter Nobu and his work in prototyping a new 14 MHz low pass filter and galvanic isolator for use with the RTL-SDR. The low pass filter improves...
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New Web Based RTL-SDR Remote Control Software: YouSDR
Recently Kristian, a reader of our blog wrote in to let us know about a new software project he found that allows you to use your RTL-SDR remotely through a web interface. The web interface runs on...
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New ADS-B Mapping and Decoder App for Android from FlightAware
Flightaware.com is a web based online radar service for aircraft. The plane position data is obtained from contributors running ADS-B decoding hardware, such as a special ADS-B receiver box or simply...
View ArticleHomemade Upconverter for the RTL-SDR Running on a Cellphone Battery
Over on YouTube user ek6rsc has uploaded a video showing his home made upconverter for the RTL-SDR. His upconverter uses a diode mixer design with a low pass filter and 40 MHz oscillator which he...
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ThumbNet – A Low Cost Satellite Groundstation Network using modified RTL-SDRs
The ThumbNet project is a project that is aiming to provide low cost satellite receivers to students and any other interested communities in order to promote worldwide education in science, technology...
View ArticleHow to Setup CWSkimmer with an RTL-SDR and HDSDR
Over on YouTube user Brent Crier has uploaded a tutorial video showing how to set up CWSkimmer with an RTL-SDR and HDSDR. CWSkimmer is regarded as one of the best pieces of software that can be used to...
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Running an RTL-SDR on OpenWRT
OpenWRT is a special custom Linux based firmware designed to create a fully functional Linux system on a internet router by replacing the stock firmware. Since OpenWRT is Linux based, it is possible to...
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New SDR# Plugin: IF Recorder
On rtl-sdr.ru, the author of several SDR# plugins has uploaded a new one called “IF Recorder”. This plugin allows you to easily record an IQ file of just the intermediate frequency (IF). In SDR#, the...
View ArticleBigWhoop: Global Spectrum Monitoring Network with RTL-SDR Dongles
The American space agency NASA runs a yearly challenge called the “International Space Apps Challenge”. The challenge encourages global collaboration in solving several space and Earth related...
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