4m QRP transverter progressing well

4m QRP transverter (so far)

Today I got on with the 4m transverter build adding the TX LO buffer, the TX mixer, drivers and PA. Output power is around 2-3W pep from an MRF237 PA device (SD1127 equivalent) I had in the junk box. All seems stable and well. All that now remains is to add the TX-RX switching circuit and put it in a box. At the current rate of progress, and barring disasters (like blowing up the PA - my last MRF237) the project could be completed next week.