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Freqwatch – RTL-SDR Frequency Scanner and Recorder
Freqwatch is a new Linux based software program that has recently been released by programmer Joshua Davis. Freqwatch makes use of rtl_power to scan a wide swath of RF spectrum and then automatically...
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Chaos Communications Congress Talks – Iridium Pager Hacking
A few days ago the Chaos Communications Congress (a technology and hacking focused conference) commenced. Amongst the talks there was one about reverse engineering the Iridium satellite paging system...
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Receiving VLF with an Upconverter and Direct Sampling RTL-SDR
Recently amateur radio hobbyist DE8MSH wrote in to let us know about how he was able to receive VLF (Very Low Frequency) signals using a very rare Refcom FC-VLF upconverter and his direct sampling...
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Techniques for using the RTL Dongle for Detecting Meteors
Back in 2013 we posted about a Dr. David Morgan who had written a tutorial paper discussing how he used the Funcube Dongle Pro+ for radio astronomy. Recently Dr Morgan has also written another paper...
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RTL-SDR with GQRX Running on an Odroid C1 at 1 MSPS and Max FFT
Over on YouTube user neutron2025 has uploaded some videos showing GQRX running on an Odroid C1. The Odroid C1 is a low cost ($35 USD) mini computer with an Arm Cortex A5 quad core CPU and 1 GB RAM...
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New SDR# Plugin: PAL / SECAM TV
The SDR# plugins programmer over at rtl-sdr.ru has recently released a new plugin which allows the decoding of PAL / SECAM TV images from within SDR# (note link in Russian, use Google translate or see...
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Listening to EPIRB Distress Beacons with the RTL-SDR
Over on YouTube user Tom Mladenov has recently been using his RTL-SDR to listen to EPIRB distress beacons transmitted by the SARSAT payload carried by the NOAA 18 satellite. To do this he uses a 6.5...
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Decoding Oregon Scientific Weatherstation Messages using Gnuradio
Recently a reader of rtl-sdr.com, DO2BJK wrote in to let us know about his project where he used GNU Radio to decode Oregon Scientific V1 and V2 weather station messages. To receive the weather station...
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Monitoring a Trunked P25 LSM Simulcast System with OP25 and an RTL SDR
Over on YouTube user jdlucas78 has uploaded a video showing a P25 LSM modulated digital voice signal being decoded by the Osmocom OP25 software for Linux. Although DSD and DSD+ can decode P25 voice, it...
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Receiving VLF with a PC sound card, Miniwhip Antenna and SAQrx
Over on YouTube user Mile Kokotov has uploaded a video showing how he is able to receive Very Low Frequency (VLF) signals between 300 Hz to 30 kHz using just his PC, a Miniwhip antenna connected to his...
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Beaglebone Black FM/Internet Radio Combo Receiver using an RTL-SDR
Last year we missed this interesting project by Frederick Vandenbosch where he created a FM/internet radio combination receiver using a BeagleBone Black mini embedded PC and an RTL-SDR dongle. The idea...
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Compiling and using DSD 1.7 for D-STAR on Linux
Amateur Radio hobbyist George Smart has recently written a tutorial showing how to compile and install DSD v1.7 on a Linux computer in order to receive D-STAR digital voice. D-STAR is a digital voice...
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Analyzing Radar Pulses with Baudline and an RTL-SDR
Over on YouTube user Albert Schäferle has uploaded a short video showing his reception of some radar pulses and their corresponding echoes. He uses rtl_fm and pipes the output into Baudline which is...
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Receiving VOR Radio Navigation with an RTL-SDR and GNU Radio
Over on YouTube user hpux735 has uploaded a video where he explores the feasibility of receiving VOR radio navigation signals using GNU Radio and an RTL-SDR. VOR is an acronym for VHF Omni Directional...
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New Oregon Scientific Temperature/Humidity Data Receiver Software for MacOS...
Recently programmer Erik Larsen wrote in to us to let us know about a MacOS application he has been developing to receive temperature and humidity data from Oregon Scientific v2.1 sensors. Oregon...
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Comparison of several SDRs on degradation from nearby strong signals at...
The programmer of Linrad (aka Leif sm5bsz) has uploaded a video to YouTube that compares several software defined radios on dynamic range and compression performance in the presence of strong nearby...
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TCP Enabled version of librtlsdr
Recently RTL-SDR.com reader Fabien wrote in to let us know that he has created a new version of the librtlsdr RTL-SDR drivers which have built in TCP support. Fabien built a remote SDR using a...
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Measuring Power Line Noise in the Neighbourhood with the RTL-SDR “Driveby”...
Over the last few months Tim Havens has been developing a portable RTL-SDR based scanner that he intends to use for geo-tagged noise floor readings. He hopes to use such a system to map sources of RF...
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We now sell RTL-SDR’s with the R820T2 Tuner and 2x Telescopic Antenna +...
We now sell R820T2 RTL-SDRs on Amazon.com (currently for US customers only sorry!) and are currently running a $2 off promotional sale which will expire January 31, or until the first batch of stock...
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Measuring Frequency Deviation of an FM Transmitter with an RTL-SDR
Over on YouTube user KP4MD has uploaded a video showing how she uses an RTL-SDR together with SDR#, a program called Visual Analyzer and an AEA PK-232 Terminal Node Controller to measure the frequency...
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