This photo, taken about 10 years ago, shows my 137kHz TX transverter. I still have it...... somewhere.
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/2200m-137khz-transverter .
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.
This photo, taken about 10 years ago, shows my 137kHz TX transverter. I still have it...... somewhere.
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/2200m-137khz-transverter .
VK3YE is well known in amateur radio circles. This is his video on very low powered experiments with WSPR.
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