G8AGN/P and G0EWN/P achieved a 111km speech QSO on optical communications using 0.5W red LEDs and Fresnel lenses on April 6th 2011. Brilliant stuff.
11 Apr 2011
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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.
In our quiet part of the village is this delightful green. One of the trees has half its leaves of a different colour.
1 comment:
That was amazing, this is why we do amateur radio ! Any more info on how they modulated the LED, so the LED was the antenna..geez !
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