this post was submitted on 15 Jul 2025
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Science Memes

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[–] Pencilnoob@lemmy.world 4 points 1 week ago (4 children)

I once made one of these with a bigger can and mounted it on an old 10' satellite dish. Managed to get Wi-Fi across several thousand yards without issue

[–] fullsquare@awful.systems 2 points 1 week ago (3 children)

wait i thought for some reason that pringles can sized waveguide would have cutoff frequency above 2.4ghz. nevermind, there's something better because bigger aperture can get you more directivity like this https://lea.hamradio.si/~s53mv/wumca/cup.html i made two out of cookie tins and it works over 500m at least

[–] Pencilnoob@lemmy.world 3 points 1 week ago (2 children)

We didn't use Pringles, I think it was these big peaches cans

[–] fullsquare@awful.systems 3 points 1 week ago

helical antennas work fine too and look goofy as hell

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