Kinda cool, but if you want radon levels why not buy a radon detector? Like this one: https://www.airthings.com/wave-plus https://www.airthings.com/wave-plus

Kinda cool, but if you want radon levels why not buy a radon detector? Like this one: https://www.airthings.com/wave-plus https://www.airthings.com/wave-plus No need to try to find and calibrate some used Russian geiger counter.