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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.
Regen receivers are simple, but effective. I have designed and built several. See my website . One of the classics was by Charles Kitchen N...
2 comments:
Interesting Roger. I believe 40 MHz is used for RC remote control of toys, model planes and cars.
Suspect many administrations would be sympathetic to spot frequencies and low power on a non interference basis.
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