There are files on the bitx20smd at /g/BITX20/files/M0ZHN%20smdBITX This was available about 6 years or so ago but now you would have to use the gerber files to have a board made. It was basically an exciter only. You can see it at ? The version 4 was the actual production version. It couls be used on any band as the vfo, bandpass filter and PA were separate to the main board.
