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Characterizing Yagi Antenna Directionality via ADS-B Reception
Over on his blog Alex Krotz has been investigating whether adding more passive director elements actually affects the directionality of his home made Yagi-Uda antenna. Instead of using modelling...
View ArticleFrugal Radio: 2020 SDR Guide Ep 1 – The Incredible World of Software Defined...
Frugal Radio has begun his YouTube channel a few weeks ago, and we've already posted about his YouLoop and SDR-Kits L-band patch antenna reviews as well as his results with the YouLoop on LF & VLF....
View ArticleStep-by-step Guide to Creating a GNU Radio Based QO-100 SSB Receiver
Thank you to M Khanfar for submitting his video that shows a step-by-step tutorial on building your own SSB receiver in Windows GNU Radio for QO-100 satellite reception. His tutorial includes adding...
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Guest Post: So you’ve bought an RTL-SDR, now what?
Thank you to Merlin from the SignalsEverywhere discord channel for writing this guest post. A package arrives at the door, a world of signal exploration awaits you. Ripping the package open you quickly...
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A Simple Guide to Setting up a DIY NOAA Weather Satellite Ground Station
A few weeks ago we posted about Sophie Dyer and Sasha Engelmann's work in creating an artistic performance based on weather satellite reception with SDRs. More recently they have uploaded their own...
View ArticleAn Introduction to Radio Trunking Systems with a Focus on P25 and SDR Trunk
Thank you to Carl Makin (VK1KCM) for submitting a video that he produced for his local ham radio club in Australia. In the video Carl first gives an overview on radio trunking systems and explains why...
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Imaging the Milky Way in Neutral Hydrogen with an RTL-SDR Part 2
Last month we shared information about Job Geheniau's success with using an RTL-SDR dongle to image our galaxy in neutral Hydrogen. Our galaxy is full of neutral Hydrogen, and lots of neutral Hydrogen...
View ArticleTech Minds: Eavesdropping on Video Monitors with TempestSDR
Over on his latest video Tech Minds' explores the use of TempestSDR to eavesdrop on video monitors with his Airspy Mini. TempestSDR is a program that we've posted about several times in the past. With...
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Electrosense+: Global Network of RTL-SDR Sensors with Decoding of FM/AM ADS-B...
Back in late 2019 we posted about the Electrosense network which is an open source project aiming to deploy radio spectrum sensors worldwide. The idea is to help analyze and understand radio spectrum...
View ArticleTesting a YouLoop on an RTL-SDR Blog V3 with Direct Sampling
Thank you to Frugal Radio for submitting a YouTube video where he tests the YouLoop on an RTL-SDR Blog V3 running in direct sampling mode. The YouLoop is a passive HF loop antenna that requires a...
View ArticleControlling Frequency in SDR# with a Barcode Scanner
Thank you to Manuel Lausmann for submitting his YouTube video showing how he has set up a system that allows him to rapidly change frequencies in SDR# with a barcode scanner and some barcodes printed...
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Tracking Wild Bats with SDRs – Featured in Science Magazine
Recently research from Tel-Aviv University by Sivan Toledo et al. involving the use of USRP SDRs to track wild bats was published in Science. The Journal Science (aka Science Magazine) is one of the...
View ArticleFrugal Radio: 2020 SDR Guide Ep 2 – Using Free Online SDRs
Over on his YouTube channel Frugal Radio has released the second episode in his 2020 SDR Guide series. In this video, Frugal Radio shows how to connect to remote SDRs such as KiwiSDR OpenWebRX, WebSDR,...
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Using CubicSDR, rtl_433, MQTT and Telegraf to Stream Live Data to InfluxDB
Nimrod makes his own sourdough and wanted a way to track the temperature and humidity of the bread making environment. To do this he's set up a system involving rtl_433 on a Raspberry Pi which live...
View ArticleFrugal Radio: Using an Airspy and RTL-SDR To Scan the UHF Military Airband in...
In Frugal Radio's latest video he explores how you can use an Airspy or RTL-SDR dongle to scan the entire military UHF airband spectrum in a few seconds via SDR#. Frugal Radio notes that there are...
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Alpha Version of SDR++ Released
SDR++ is an open source general purpose cross platform SDR program that Alexandre Rouma (@WhatsTheGeekYT) has been working on for the past few months. Recently he released his first Windows Alpha...
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Australian Teenager Exposes COVID-19 Patient Data via POCSAG Pager Network
A 15 year old Australian teenager has been accused of leaking sensitive COVID-19 patient data such as the phone numbers and addresses of people in quarantine, and conversations between health officials...
View ArticleSignalsEverywhere: SDRTrunk P25 Police Scanner Tutorial with two RTL-SDRs
Over on YouTube Sarah from SignalsEverywhere has uploaded a new tutorial video showing how to use two RTL-SDR dongles with the free SDRTrunk software to create a P25 Police scanner. In the video she...
View ArticleFrugal Radio: SDR Guide Ep 3 – Beginner Budget SDR Shootout
In this episode Frugal Radio explores the differences between three RTL-SDR dongles. In the video he compares a generic RTL-SDR, a Nooelec SMART and one of our RTL-SDR Blog V3 units. Initially the...
View ArticleFrugal Radio: SDR Guide Ep 4 – Antenna Basics for SDR Beginners
In this episode of Frugal Radio's series of SDR beginners guide videos he discusses some antenna basics. He shows the most common types of antennas, provides several tips to help improve reception, and...
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