When I was still in Denmark, I started building a HF transceiver based on a design by G4CLF and later published in the Danish ham radio magazine 'OZ' in August 1980 by OZ1AM.
Over the years it has undergone many modification, and this time I will be using a Arduino Mega-256 and a sketch by JA2NKD. I have modified the code to be used with a larger 4.3" display. It can be downloaded from here. Please note, this is a work in progress, please check back, it should end up as a 100W TX/RX.