So to detect dark matter, you just have to show that the speed at which material orbits the center of the galaxy doesn’t fall off with distance. And radio observations are the easiest way to do that, ...

Techies and trains have always had a fairly close relationship, but some people seem to take that relationship to toxic levels. About a month ago, a 23-year-old Taiwanese student "hacked" the ...

HDMI is, for most people, just how the picture gets there. Plug it in, something appears on the screen, done. That's fair — the image is usually the whole point. But the spec has carried a lot of ...

Abstract: This study presents the design and testing of a V-dipole antenna, Quadrifilar Helix Antenna (QHA) and Turnstile Antenna for receiving NOAA satellite signals using RTL-SDR. The V-dipole, a ...

I’m sure you’ve seen the odd post on social media about people having their Flippers confiscated by airport security and also posts by other passengers on board, alarmed about someone playing with ...

Radios were once big complicated appliances, full of warm valves and paper-wrapped capacitors, all humming and glowing to ...

[Stephen] recently wrote in to share his experiments with using the LimeSDR mini to conduct a bit of piracy on the airwaves, and though we can’t immediately think of a legitimate application for ...

RTL-SDR (budget option, limited frequency range) HackRF One (full-duplex SDR with a wider frequency range) NooElec SAWbird LNA (for boosting weak signals) Wideband Antenna (e.g., helical, yagi, or ...

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