!!!UNDERCONSTRUCTION!!!
This transceiver have some problems and it's not good to build.
CM2KMK 20 m (14MHz) SSB transceiver in progress.
I don't use relay to switch VFO/BFO. I will make some changes in arduino code to switch frequencies in Si5351 CLK exits when press PTT.
Now I'm not ready with arduino code/sketch and work with github repository is in progress and not finished.
ALL SOURCES AND SCHEMATICS:
https://github.com/LZ1DPN/CM2KMK20mSSBtrx/
Be aware ! This is not finished yet !
73 ES MNI DX'es!LZ7DP