Kraken A5/1 on macOS ARM64 (port notes)
Frank Stevenson’s Kraken builds on Apple Silicon with three patches and a semaphore shim. CPU cracker only. Cross-checked against libosmocore.
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Setting up an SDR lab on macOS Apple Silicon: Part 1
A small passive SDR research lab on MacBook Pro M4 with LibreSDR B220 Mini. GSM BCCH decode from wideband capture, 35 2G and 34 4G cells inventoried across all Bucharest operators, full srsRAN LTE stack in loopback, native macOS ARM64. Notes on the four porting problems and the bitstream trap that looked like a UHD bug.
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Crazy Danish Hacker – SDR Series – International Space Station
Crazy Danish Hacker traces the ISS overhead using RTL-SDR, a directional antenna, and open-source tracking software. A fun radio experiment that shows how much you can hear from low Earth orbit with modest equipment.
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Crazy Danish Hacker – Signal jamming
Crazy Danish Hacker demonstrates GSM signal jamming with a Raspberry Pi running RPITX: a low-power transmitter that can disrupt cellular reception in a controlled test environment. Illegal in the wild; instructive in a Faraday cage.
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Crazy Danish Hacker – Spy on anyone’s location
Crazy Danish Hacker uses GSM sniffing techniques to correlate cell tower interactions and infer a target device’s approximate location: a demonstration of how the GSM protocol leaks location metadata by design.
