Many years ago I designed and built this circuit for 10m WSPR. It was later adapted for 10m FT8. It works really well.
Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.
There are an unbelievable number of planets believed to exist in the universe. Human consciousness should just cease when we die. The truth ...
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