Decoding DMR on OSX using a RTL SDR and DSD Plus
DSD+ (Digital Speech Decoder+) is a popular Windows tool that can be used together with an RTL-SDR to decode digital speech signals such as P25 and DMR. There is unfortunately no version for OSX....
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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...
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KiwiSDR: 30 MHz Bandwidth SDR for VLF/LF/MF/HF
The KiwiSDR is an up and coming VLF/LF/MF/HF capable SDR that has a large 30 MHz of instantaneous bandwidth and coverage from 10 kHz to 30 MHz. It is designed to be low cost and used as an online...
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New L-Band Filters from Adam Available
Adam (9A4QV) is well known in the RTL-SDR community for producing the LNA4ALL low noise amplifier as well as various RF filters that work well with the RTL-SDR. Adam is now selling some L-Band filters...
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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Review: Airspy vs. SDRplay RSP vs. HackRF
When people consider upgrading from the RTL-SDR, there are three mid priced software defined radios that come to most peoples minds: The Airspy, the SDRplay RSP and the HackRF. These three are all in...
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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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Budget HackRF: A $150 HackRF Clone
Back in December 2014 the HackRF Blue came out via a crowd funded Indiegogo campaign as a HackRF board that was $100 cheaper than the official version ($199 vs $299 USD). The HackRF is a 8-bit receive...
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Receiving C-Band AERO Signals
Jonti, the programmer of JAERO has recently updated his software to version 1.04 which can now be used to decode C-Band AERO signals. Previously only L-Band (1.5 GHz) AERO signals could be decoded with...
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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...
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SoDeRa: An upcoming low cost app-enabled open-source 100 kHz to 3.8 GHz SDR...
A new software defined radio called SoDeRa (SOftware DEfined RAdio) is currently under joint development by companies Canonical (the company behind the Ubuntu OS) and Lime Micro. SoDeRa is based on the...
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Reverse Engineering the SimpliSafe Wireless Burglar Alarm
SimpliSafe is a home security system that relies on wireless radio communications between its various sensors and control panels. They claim that their system is installed in over 300,000 homes in...
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...
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