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Noise from the Sun with the RTL-SDR
YouTube user tvdxrools . has posted a short video showing what solar activity noise from the sun looks like on the waterfall at 31 MHz. He used an RTL-SDR dongle and 1/2 wave vertical antenna. The post...
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Receiving a 10 GHz Reflected Moon Beacon with the RTL-SDR
There is an amateur radio group in Germany known as DL0SHF which transmits a 10 GHz (QRG = 10.368.025 MHz) beacon at the moon whenever it is visible at their site. The goal of this transmission is to...
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Meteor Detection with the RTL-SDR
YouTube user Tim Havens has uploaded two videos showing his meteor detection results with an RTL-SDR dongle. Tim uses a stock R820T dongle, and a 6 element yagi antenna with LNA. For the software he...
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Radio Astronomy with a 0.2dB Noise Figure LNA
Over on our Facebook page member Александр has let us know about a Russian amateur astronomer, Alex who has been using the RTL-SDR for radio astronomy. Alex uses an Elonics E4000 RTL-SDR combined with...
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RTL-SDR Based Itty Bitty Radio Telescope
On his website, David has posted a page showing his results with an “Itty Bitty Radio Telescope” connected to an RTL-SDR dongle. The Itty Bitty Radio Telescope is a small radio telescope that can be...
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Low Cost Hydrogen Line Telescope using the RTL-SDR
Amateur radio astronomer Y1PWE has uploaded a pdf document describing how he created a low cost hydrogen line telescope using an RTL-SDR dongle. Hydrogen atoms randomly emit photons at a wavelength of...
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Rebooting the ISEE-3 with USRP Software Defined Radios
The ISEE-3 is a exploratory spacecraft that was launched in 1978 and placed in an orbit around the sun. It was mission was to study the interaction between solar wind and the earth’s magnetic field and...
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Radio Astronomy with RTL Bridge and Radio-Sky Spectrograph
Amateur radio astronomy hobbyist Jim Sky has written on his blog about his new program called RTL Bridge with allows the RTL-SDR to directly connect to his other radio astronomy programs Radio-SkyPipe...
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SDR Touch Updated to Version 2.0
SDR Touch, the popular Android based software defined radio software for the RTL-SDR has been updated to version 2.0. This new version is a complete rewrite with many optimizations listed below. 100%...
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Observing the 21cm Hydrogen Line with Linrad and an RTL-SDR
Over on YouTube user S53RM has uploaded a video showing his and S53MM’s observation of the 1420 MHz galactic hydrogen line with an RTL-SDR. Hydrogen atoms randomly emit photons at a wavelength of 21cm...
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Radio Astronomy using a Differential Radiometer and Interferometer with an...
Amateur radio astronomer Marcus Leech often makes use of RTL-SDR dongles for his amateur radio astronomy experiments. Recently Marcus wrote a technical paper discussing a modern SDR implementation of a...
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Techniques for using the RTL Dongle for Detecting Meteors
Back in 2013 we posted about a Dr. David Morgan who had written a tutorial paper discussing how he used the Funcube Dongle Pro+ for radio astronomy. Recently Dr Morgan has also written another paper...
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Capturing Noise Bursts from Jupiter with an RTL-SDR
Recently amateur radio astronomer Jim Brown used an RTL-SDR dongle together with a Ham-it-up upconverter and preamp to capture noise bursts from the planet Jupiter. Not much information about his...
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RTL-SDR Tests: R820T vs R820T2 Stability Tests for Radio Astronomy
Amateur Radio astronomer Peter Kalberla recently wrote in to let us know about a paper he has written exploring stability issues and comparing the R820T and R820T2 RTL-SDR tuner chips (pdf warning)....
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Determining the Radiant of Meteors using the Graves Radar
With an RTL-SDR or other radio it is possible to record the echoes of the 143.050 MHz Graves radar bouncing off the ionized trails of meteors. This is called meteor scatter and it is usually used to...
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New method for generating wideband spectograph’s with Radio-Sky and an RTL-SDR
Radio-Sky Spectrograph is a software application that is designed to produce waterfall displays similar to other software, but with a focus on observing radio astronomy phenomena. Radio-Sky...
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Building a Passive Radar System with RTL-SDR Dongles
Back in 2013 we posted about Juha Vierinen’s project in which he created a passive radar system from two RTL-SDR dongles, two Yagi antennas, and some custom processing code. Passive radar can be used...
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Some new RF filters from Adam 9A4QV
Adam 9A4QAV is mostly known as the manufacturer of the popular LNA4ALL, a low cost low noise amplifier which is often used together with the RTL-SDR to improve reception of weak signals. He also sells...
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Two New SDR# Plugins for Passive Radar and IF Signal Averaging
Recently Dr. Daniel Kaminski wrote into RTL-SDR.com to let us know about two very interesting new SDR# plugins that he has developed to use with the RTL-SDR dongle. The first plugin is called “Passive...
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Detecting meteor radio echoes using the RTL-SDR USB dongle
At the recent 2015 Society of Amateur Radio Astronomers (SARA) Conference Ciprian Sufitchi (N2YO) presented a paper titled “Detecting meteor radio echoes using the RTL/SDR USB dongle” (pdf). His paper...
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