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Bypassing Rolling Code Systems – CodeGrabbing/RollJam
A while back we posted about Samy Kamkars popular “RollJam” device, which was a $32 home made device that was able to defeat rolling code based wireless security systems such as those used on modern...
View ArticleHow to use DSD+ with WineSkin on OSX
Last week we posted about how Matthew Miller deomnstrated that he was able to get the Windows digital speech decoder (DSD+) software running under OSX with WineSkin. DSD+ allows you to decode digital...
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Testing a frequency synthesizer with an RTL-SDR
Harris Butler is designing his own software defined radio out of a Cypress PSOC5 (processor and ADC), an RF mixer, LNA and a frequency synthesizer (for use as a local oscillator) all purchased from...
View ArticleBroadcasting Analgoue NTSC TV with a $7 ESP8266
The ESP8266 is a $7 WiFi module that can be used to give any microcontroller access to a WiFi network. It is designed for creating Internet of Things (IoT) devices and has various features such as it’s...
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Using AIS Share, OpenCPN and an RTL-SDR on a Sailboat
AIS Share is an app for Android that allows you to turn an Android device into an AIS receiver by using an RTL-SDR. AIS stands for Automatic Identification System and is used by ships to broadcast...
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New Version of the Frequency Manager Suite Plugin for SDR# Released
Recently the commonly used Frequency Manager Suite Plugin for SDR# has been updated. The plugin suite works well with the RTL-SDR and includes features such as a frequency scanner and manager, a...
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Enclosing two RTL-SDRs in a metal box to reduce noise
Over on his blog, Twitch has uploaded a post showing how he mounted two RTL-SDR dongles into a single metal case in order to reduce noise. Twitch used a $2 aluminium metal case that he obtained from a...
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Meteor M-N1 Still Working, Meteor M-N2 Still Down
The Meteor M N-2 is a polar orbiting Russian weather satellite that was launched in July 2014. It transmits with the LRPT protocol which allows us to receive weather satellite images that are of a much...
View ArticleBuilding a Wideband Helix Antenna for L/S/C Bands
Over on YouTube user Adam Alicajic (creator of the popular LNA4ALL low noise amplifier) has uploaded a video showing the performance of a home made wideband helix antenna that he has created for...
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RTLSDR4Everyone: Review of 5 RTL-SDR Dongles
Over on the rtlsdr4everyone blog (previously known as the sdr4mariners blog), author Akos has uploaded a new post that compares 5 different RTL-SDR dongles against one another. He compares a Terratec...
View ArticleGetting SDR# and RTL-SDR to run on OSX El Capitan with Mono
A few weeks ago Matthew Miller showed us how it was possible to run DSD+ in OSX using a program called Wineskin. Now he’s uploaded a new video that shows how to get SDR# working in OSX El Capitan with...
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RTLSDR4Everyone: Avoiding RTL-SDR Rip-Offs
Akos from the rtlsdr4everyone blog has come up with a new post that aims to help people avoid getting ripped off when trying to buy an RTL-SDR dongle. He shows that there are several sellers on eBay...
View ArticleComparing LHCP and RHCP Reception of a Thuraya Satellite with an RTL-SDR and...
Over on YouTube Adam Alicajic 9A4QV (creator of the popular LNA4ALL) has uploaded a video showing a comparison of reception of Thuraya satellites with a LHCP (left hand circular polarization) and RHCP...
View ArticleCreating an RF Proximity Alarm (Close Call) with an RTL-SDR
“Close Call” is a feature that some radio scanners have which notifies the user when there is a radio transmitter that is in the near vicinity (such as from a police radio). It works by detecting the...
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FlightBox: Commercial RTL-SDR Based ADS-B (1090ES & 978UAT) Receiver for Pilots
For some time now, small aircraft pilots who don’t have access to expensive ~$1000+ ADS-B gear have been successfully using an RTL-SDR and Raspberry Pi combination to receive ADS-B and UAT to display...
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RTLSDR4Everyone: Reivew of the Nooelec Ham-It-Up V1.3 and Balun 1:9
Over on his blog rtlsdr4everyone, Akos has posted two new reviews. One post reviews the latest ham-it-up v.13 upconverter and the other reviews the “Balun 1:9″ impedance transformer. An upconverter...
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Hacking Alarm Systems with an RTL-SDR and RFcat
Back in 2014 the author of boredhackerblog.blogspot.com did a final year project for his wireless security class on hacking home alarm systems. His presentation was titled “How we broke into your...
View ArticleListening to an Astronaut Transmitting from the International Space Station
Over on YouTube user surfrockuk shows a fun and educational use of the RTL-SDR. Every now and then astronauts will arrange a ham radio session where they will communicate with a school. An RTL-SDR can...
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Beta testing a modified RTL-SDR Driver for L-band heat issues
The R820T/2 RTL-SDR’s are known to have a problem that surfaces when trying to listen at L-band frequencies above about 1.5 GHz. As the dongle heats up the internal PLL appears to loose lock, causing...
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Creating a wireless RTL-SDR server with a small OpenWRT WiFi Router
Over on his blog yo2ldk has been experimenting with creating a wireless RTL-SDR server by using a mini OpenWRT based WiFi router (page in Romanian, use Google Translate for English). The router he uses...
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