A while back we posted about flight tracking company RadarBox.com who had launched their 1090 MHz ADS-B optimized RTL-SDR. Like other ADS-B optimized RTL-SDR's, the dongle contains a 1090 MHz filter and a low noise amplifier that reduces the noise figure,...

On his latest video Corrosive from the SignalsEverywhere YouTube channel discusses Inmarsat LES EGC and AERO ACARS decoding. Inmarsat is a satellite provider that has multiple geosynchronous satellites that can be received from almost anywhere in the world at around...

Daniel Estévez has posted on the LimeSDR Mini CrowdSupply blog about his ground-station build for the Es'Hail-2 satellite. Es'Hail-2 is the first geostationary satellite with amateur radio transponders on board. The LimeSDR Mini is a $159 RX/TX capable SDR with...

Over on YouTube Curious Droid has uploaded an interesting video that attempts to explain the purpose of the HAARP transmitter project. The High Frequency Active Auroral Research Program (HAARP) is an ionospheric research program based in Alaska. It consists of a high power...

Thank you to Shreyas Ubale for submitting his blog post about reverse engineering a wireless doorbell, and then performing a replay attack. Shreyas had purchased a wireless doorbell set containing one button transmitter and two bell receivers. However, his situation...

Over on our forums user qrp has released a modified ExtIO that allows the direct sampling mode to work correctly in SDRUno. SDRUno is SDRplay's official software for their RSP line of software defined radios, but SDRUno can also work...

Corrosive from the SignalsEverywhere YouTube channel has released a new episode of his podcast. In this episode Corrosive interviews an anonymous informant who has an interesting story about his involvement with the UHF Military SATCOM pirate radio scene in Brazil. Corrosive also explains...

Over on YouTube OLHZN High Altitude Balloons has posted a very entertaining video showing how to use an RTL-SDR and small grid dish antenna to track and recover a fallen weather balloon and its radiosonde. OLHZN writes: The US National Weather Service...

This week on the SignalsEverywhere YouTube channel, host Corrosive gives us a tutorial on common modulations that you'll see on your software defined radio. His tutorial covers Amplitude Modulation (AM), Frequency Modulation (FM), Single Side Band (SSB) and Conintuous Wave...

CubeSats are small and light satellites that can these days be built and launched into orbit by almost anyone with a small budget of roughly $40,000. They are a great way for schools and other organizations to get into a...

Over on YouTube user ModernHam has uploaded a useful tutorial showing how to use our RTL-SDR Blog V3 dongles for FT8 monitoring. The RTL-SDR Blog V3 has a built in direct sampling circuit which allows for reception of HF signals without the...

Circle City Con is a yearly conference that focuses on information security talks. At this years conference Josh Conway presented an interesting talk titled "SigInt for the Masses Building and Using a Signals Intelligence Platform for Less than $150". Josh's talk...

Over on his YouTube channel SignalsEverywhere, Corrosive has just released a new video titled "Software Defined Radio Introduction | What SDR To Buy? | Choose the Right one For You". The video is an introduction to low cost software defined radios...

Due to various human activities causing the environmental destruction of it's habitat, the Orangutan is now classed as a critically endangered species. In addition to being endangered, Orangutans face another problem in that they are often captured and sold as...

Hanselminutes is a weekly podcast that aims to promote fresh technology and fresh voices to software developers. Last Friday they interviewed Ben Hilburn who is the project lead and president of the GNU Radio Foundation and Director of Engineering at DeepSig...

Over on YouTube Andreas Spiess has been helping his friend create a pressure monitoring system for his home brew beer bottles. In order to do this, Andreas uses an externally mounted after market wireless tire pressure sensor whose data can...

Back in August, 2018 we posted about NOAA-APT, which back then was a new NOAA APT image decoder program. Recently Martin, the author of NOAA-APT has written in and wanted to note that he's now created a guide and video...

Thank you to Steve Bossert who wrote in and wanted to share his notes about getting a LimeSDR Mini SDR to run in SDR#. The LimeSDR Mini is a $159 RX and TX capable SDR with 12-bit ADC, 10 MHz...

QIRX SDR is an RTL-SDR compatible program that focuses on DAB+ decoding and listening. In a recent update programmer Clem notes that the newest feature is a map powered by OpenStreetMap that can display a the location of received DAB...

At this years Hamvention Chris Howard from ICQ Amateur interviewed Andy at the SDRplay booth. In the interview they discuss various new features and improvements to SDRuno, the official software for SDRplay devices. Later they also discuss the RSPduo, and...

Several years ago back in 2013 and 2014 we uploaded two posts showing how it was possible to use an SDR to listen in to restaurant pagers and collect data from them, and also to spoof their signal and activate...

The Airspy team have recently announced the release of their new "Airspy HF+ Discovery". The Discovery is a smaller, lighter and improved version of the Airspy HF+. The frequency range, bandwidth and bit depth and specs all remain the same,...

If the math behind software defined radio and digital signal processing (DSP) concepts does your head in, the RSGB has a short document that explains core DSP concepts without any math. If you're just looking for an overview of what...

The Africa Report, an online newspaper specializing in African stories recently ran a story titled "A Tunisian spy story". The story discusses the circumstances behind the mysterious arrest of a UN expert in Tunisian, supposedly for having used an RTL-SDR...

Over on YouTube Corrosive from the SignalsEverywhere channel has uploaded a new video showing us how to set up P25 trunking and decoding with DSDPlus Fastlane and only a single RTL-SDR. Normally two dongles are required to follow a P25...