Many years ago I experimented with this QRP transceiver circuit on 80m CW. It is hard to find anything much simpler!
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/80m-xbm80-2
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.
Many years ago I experimented with this QRP transceiver circuit on 80m CW. It is hard to find anything much simpler!
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/80m-xbm80-2
This evening is the November 70cm activity contest organised by the RSGB. I go on briefly with my 10W SSB and the 2m omni big-wheel. UPDATE...
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