https://fox.hamradio.my/ weekly 1.0 https://fox.hamradio.my/logo.png 9M2PJU ESP32 Fox Hunt Beacon logo ESP32 firmware for amateur radio fox hunting with browser-based web flasher https://fox.hamradio.my/wiring-diagram.svg ESP32 to handheld radio wiring diagram Wiring diagram for connecting ESP32 to a handheld radio via PTT and audio interface