The CW and SWR application source is original ON4CRD code.
The compiled AVR programs link Arduino AVR Core 1.8.6 and, for SWR, its EEPROM library.
Arduino AVR Core sources, copyright notices and license terms are available at:
https://github.com/arduino/ArduinoCore-avr/tree/1.8.6
https://github.com/arduino/ArduinoCore-avr/blob/1.8.6/cores/arduino/Arduino.h
https://github.com/arduino/ArduinoCore-avr/blob/1.8.6/libraries/EEPROM/src/EEPROM.h
The corresponding ON4CRD sketch sources, build commands and pinned core version
are included so that these programs can be rebuilt and relinked with that core.
The package does not contain third-party binaries or firmware from Radio-kits.
AVR8js 0.21.0 is a development-only simulation dependency, not linked into the firmware.
https://github.com/wokwi/avr8js
