Sauce: https://xcancel.com/chiefofautism/status/2032465595896074574 Wonder for how long JLPCB will let people upload those gerbers. >someone built an OPENSOURCE MILITARY RADAR that tracks multiple targets up to 20km away > its called AERIS-10, full github repo schematics, PCB layouts, FPGA code, python GUI, everything under MIT license > commercial phased array radar starts at $250,000. military surplus is $10,000-50,000 but its decades old analog junk with no electronic beam steering > this does electronic beam steering at 10.5GHz, pulse compression, doppler processing, multi-target tracking on a real time map > two versions: 3km range with patch antenna array, 20km range with 32x16 slotted waveguide array and GaN AMPLIFIERS > custom frequency synthesizer, 16 front-end chips, FPGA doing all signal processing, GPS and IMU for ACCURATE target coordinates when the platform moves > all gerber files included so you can order the PCBs and build it yourself > one person built what defense contractors charge a quarter MILLION for and open sourced it