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.
4 Feb 2021
Early optical experiments
One of my Facebook memories today was this photo of my 481THz optical beacon tests in daylight over a 1.6km line of sight path. Later I did much further at night "over the horizon". For the avoidance of doubt, that was 20dB S/N - so very strong.
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