Conference Talk on PICTOR A Free-to-Use Open Source Radio Telescope based on...
At this years FOSDEM 2020 conference Apostolos Spanakis-Misirlis has presented a talk on his PICTOR open source radio telescope project. We have posted about PICTOR in the past [1, 2] as it makes use...
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Using an RTL-SDR to Measure the Basis for the Dark Matter Hypothesis
From calculations depending on the distribution of visible star mass in our galaxy, a certain galactic rotational velocity vs distance from center curve is expected. However, when scientists actually...
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Notes on Observing Pulsars with an SDR from CCERA
A pulsar is a rotating neutron star that emits a beam of electromagnetic radiation. If this beam points towards the earth, it can then be observed with a large dish or directional antenna and a...
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Job’s Radio Telescope: Hydrogen Line Northern Sky Survey with RTL-SDR
We've posted about Job Geheniau's RTL-SDR radio telescope a few times in the past [1] [2] [3], and every time his results improve. This time is no exception as he's created his highest resolution radio...
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Building an 11.2 GHz Radio Telescope with an Airspy and 1.2m TV Satellite Dish
In the past we've posted several times about how 1.42 GHz Hydrogen Line amateur radio telescopes used with RTL-SDRs or other SDRs for Hydrogen line observations of the galaxy. Recently Hackaday ran a...
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GPU Accelerated RTL-SDR Radio Interferometer Code For Radio Astronomy
Evan Mayer (@millijanskys) has recently released some code called “effex” that allows you to use two RTL-SDR dongles as an interferometer for radio astronomy and other experiments. The hardware used is...
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SDRA2021 Talks: Electrosense, Neural Network Signal Classification, gr-rpitx,...
The 2021 Software Defined Radio Academy conference was held online this year on June 26/27 and the talks have been recently uploaded to YouTube. There are some interesting talks this year including a...
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CCERA Memo on Building Small Introductory 21cm Telescopes for use with SDRs
CCERA is the Canadian Centre for Experimental Radio Astronomy which is run by Marcus Leech who is well known for experimenting with low cost SDR based radio astronomy projects. In the past we've seen...
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Imaging the Cygnus Star Forming Region with an RTL-SDR and Amateur Radio...
Over on Facebook Job Geheniau has posted results from his latest radio astronomy experiment which involves imaging the Cygnus-X star forming region at 1424 MHz with a 1.9m radio telescope, an RTL-SDR...
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Imaging the Cassiopeia A Supernova Remnant with an RTL-SDR and Amateur Radio...
Just a few days ago we posted about Job Geheniau's success at radio imaging the Cygnus-X star forming region at 1424 MHz with a 1.9m radio telescope, an RTL-SDR and some additional filtering and LNAs....
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SDRAngel Features Overview: ADS-B, APT, DVB-S, DAB+, AIS, VOR, APRS, and many...
SDRAngel is a general purpose software defined radio program that is compatible with most SDRs including the RTL-SDR. We've posted about it several times before on the blog, however we did not realize...
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Observing the NML Cygni Red Supergiant Star with an Airspy Mini SDR and Home...
Job Genheniau's projects have been featured several times on this blog in the past for imaging the Milkyway and other astronomical objects like supernova's and protostar regions with a 1.8m...
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Detecting Interstellar High-Velocity Clouds with a Radio Telescope and an...
Over on Facebook Job Geheniau has recently described his success in detecting interstellar high-velocity clouds with his telescope consisting of a 1.8 meter dish, amplifiers, band pass filters, and an...
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Pulsar B0329+54 Detected with a 1.9m Dish and RTL-SDR
Over the past few years Job Geheniau has been constantly surprising us with his amateur radio astronomy results coming from modest dish sizes and low cost SDR equipment like an RTL-SDR. We've seen him...
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WiFi Grid RTL-SDR Radio Telescopes featured in SARA2022 Conference Talks
Over on YouTube the Society of Amateur Radio Astronomers have recently uploaded talks from their SARA 2022 online conference. Two of the talks we've seen focus on describing results produced by small...
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Radio Jove Spectrograph Hardware and Software
NASA's Radio Jove is a project that enables students and amateur scientists from around the world to observe and analyze the HF radio emissions from Jupiter, our Sun and our galaxy using easy to...
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Job’s Radio Telescope Observes Maser W3(OH)
Over the past few years we've seen a lot of interesting observations coming from Job's Radio Telescope, which is Job Geheniau's 1.5m dish connected to an RTL-SDR (with additional filters and LNAs). He...
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RSGB 2022: The UK Meteor Beacon Project
During last years Radio Society of Great Britain (RSGB) 2022 convention, Brian Coleman (G4NNS) presented a talk about the UK Meteor Beacon Project. The idea behind the project is to use a transmit...
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Video Demonstrating Hydrogen Line Detection with an RTL-SDR and WiFi Dish
Back in January 2020 we posted a tutorial showing how it's possible to detect and measure the galactic Hydrogen line using a simple 2.4 GHz WiFi dish, RTL-SDR Blog V3 and a filtered LNA. Since then...
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Passive Radar Sensing via Ambient Radio Noise from the Sun and Jupiter
Recently Dr. Sean Peters from the Naval Postgraduate School, in Monterey, CA presented an interesting webinar titled "Leveraging Ambient Radio Noise for Passive Radar Sensing of the Terrestrial and...
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