Quote from SunHyuk

Mr.Radio (mrradio.kr) is a radio frequency (RF) and satellite signal security wargame platform. Players learn RF basics through progressively difficult challenges — from simple modulation to satellite signal decoding. The site provides a custom ground station simulator (Virtual Satellite Antenna) that simulates a real satellite signal receiving environment, allowing players to experience the full flow of satellite hacking from signal acquisition to data extraction.

The site was founded by SunHyuk Hwang, a graduate student in South Korea researching satellite security. There was no existing platform focused specifically on RF signal analysis challenges, so mrradio.kr was built to fill that gap. The goal is to make radio and satellite security hands-on and accessible to anyone with curiosity.