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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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Using Multiple RTL-SDR’s to Capture a Trunking System
An RTL-SDR dongle has a maximum usable bandwidth of about 2.4 MHz which most often isn’t enough to capture an entire trunking system that may be spread out over a larger bandwidth. In order to get...
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Review: FlightAware 1090 MHz ADS-B Antenna and Filter
In this post we will review the FlightAware ADS-B Antenna and their 1090 MHz band pass filter. The FlightAware ADS-B antenna is a collinear type antenna, with 5.5 dBi of gain, a rugged weatherproof...
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Dave from EEVBlog Reviews the Red Pitaya
The Red Pitaya is a type of advanced digital acquisition device (DAQ) that is marketed mainly for use as a type of digital oscilloscope. But it has an on board programmable FPGA and through various...
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HamRadioScience Reviews the Elad FDM-DUO Software Defined Transceiver
The Elad FDM-DUO is a high end $1149 USD Italian made software defined radio transceiver (transmit and receiver) with a frequency range of 10 kHz – 54 MHz, a 16-bit ADC, a bandwidth of up to 6 MHz and...
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Finding GPS Signals from within the Noise Floor with an RTL-SDR
If you were to try to simply spot a GPS signal at 1.575 GHz in the spectrum on a waterfall in a program like SDR# you would probably fail to see anything. This is because GPS signals are very weak, and...
View ArticleBuilding a simple NOAA APT Antenna out of an Umbrella
In order to optimally receive NOAA weather satellite images a special satellite antenna tuned for 137 MHz should to be built. Generally either a QFH or turnstile antenna is recommended as these receive...
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Creating a FSK SSDV data system for High Altitude Balloons
David and Mark are building a 115 kbit/s FSK SSDV (slow scan digital video) data system for high altitude balloons. In their system, on the balloon transmit side they use a Raspberry Pi, Raspberry Pi...
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RTLSDR4Everyone: Raspberry Pi guide & choosing your first dongle
Over on his blog rtlsdr4everyone author Akos has recently uploaded three new posts. The first post is about the Raspberry Pi minicomputer and the post discusses the merits of using the Raspberry Pi...
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Bootable Linux image with the telive TETRA decoder now available
Back in 2014 the telive decoder by sq5bpf was released which allowed RTL-SDR users to decode and listen in to unencrypted TETRA radio. TETRA is a type of digital voice and trunked radio communications...
View ArticleSpectrum Spy: New Spectrum Analyzer Software for the Airspy
Software defined radio’s can easily be used a very wideband spectrum analyzers by quickly stepping through the spectrum at the largest stable bandwidth supported. The RTL-SDR has had this functionality...
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KiwiSDR: 30 MHz Bandwidth VLF to HF SDR now on KickStarter
Back on February 8 we posted about the up and coming KiwiSDR, a software defined radio with 30 MHz of bandwidth and a tuning range that covers 0 – 30 MHz (VLF to HF). It is intended to be a low cost...
View ArticleInspectrum: A New Tool for Analysing Captured Signals
Inspectrum is a Linux and OSX based tool that can be used for analysing captured signals. It is compatible with the IQ files generated from SDRs, such as the RTL-SDR or HackRF. Over on YouTube user...
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ADS-B Decoder for the SDRplay RSP Now Available
A new ADS-B decoder for the SDRplay RSP has recently been released by the SDRplay programmers. The SDRplay is a $149 USD software defined radio with a 0.1 – 2000 MHz range, 12-bit ADC and up to 8 MHz...
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A GNU Radio Based ISDB-T and RTL-SDR Compatible 1Seg Decoder
In most parts of the world the DVB-T standard is used to air digital HDTV. In the USA the ATSC standard is used, and in China DTMB is used instead. In other countries such as Brazil, Peru, Argentina,...
View ArticleBuilding a 28.8 MHz TCXO for the RTL-SDR
For accurate frequency tuning even amongst large temperature in an SDR, a Temperature Compensated Crystal Oscillator (TCXO) should be used as the main oscillator. Standard RTL-SDR dongles used a...
View ArticleMichael Ossmann’s Talk on RF Circuit Design
At the 2015 Hackaday super conference Michael Ossmann (designer of the HackRF SDR and various other RF products) gave a talk called “Simple RF Circuit Design”. His talk explains in very simple terms...
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Meteor M-N2 now active again
According to various reports the Russian Meteor M-N2 satellite appears to be active again once more. The Meteor M N-2 is a polar orbiting Russian weather satellite that was launched in July 2014. It...
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FlightAware ProStick: A new ADS-B optimized RTL-SDR with built in LNA
The FlightAware team have today announced the release of the “ProStick”, an RTL-SDR dongle that they write has been modified for improved ADS-B reception. The new FlightAware RTL-SDR’s main defining...
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Comparing ADS-B Reception with the RTL-SDR, Airspy and Beast Receivers
Over on satsignal.eu the author has set up a page showing live statistics of his ADS-B reception for the RTL-SDR and Airspy software defined radios, and also for the Beast ADS-B receiver. The Airspy is...
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