A project of Luc ON7DQ and Gilbert ONL12523 the OST Morse Box
A circuit build arround an arduino microcontroller and some passive components that enables a connection between a CW key and a microphone input of any 2m tranceiver that works on FM. This enables the study and excersise of cw on 2m via FM.
https://on7dq.blogspot.com/2020/07/the-ost-morse-box.html
https://on7dq.blogspot.com/2020/07/ost-morse-box-build-by-gilbert-onl12523.html
https://github.com/on7dq/OST-Morse-Box