• 9point6@lemmy.world
      link
      fedilink
      arrow-up
      51
      ·
      edit-2
      1 year ago

      Funnily enough this may actually have a positive impact

      People used to create tinfoil, tin can or wok based reflectors for WiFi to guide the omnidirectional signal into becoming a directional one.

      I think the reflective part of some mirrors is essentially tin foil, so it probably would have a mild boosting effect in the direction of the mirror

      Edit: in fact if OP’s fan has a rounded metal cage on it, you could take the front half off and you’ve basically got a WokFi setup there, with added danger

      • 🐑🇸 🇭 🇪 🇪 🇵 🇱 🇪🐑@lemmy.world
        link
        fedilink
        English
        arrow-up
        10
        ·
        edit-2
        1 year ago

        Also if it’s close enough, the metal of the fan itself serves as a pretty decent antennae. You can accomplish the same by taping a fork to the box!

        It’s the silliest little lifehack yet wrapping a wire around a fork, then wrapping the other end around the router works so well

      • over_clox@lemmy.world
        link
        fedilink
        arrow-up
        4
        ·
        1 year ago

        You’re not wrong. Matter of fact, you’re absolutely right!

        Back around 2011, I used a pie pan and USB WiFi dongle to snag the neighbor’s WiFi. My pie pan contraption basically tripled the signal strength, and I never had a single dropout. 👍

      • umbrella@lemmy.ml
        link
        fedilink
        arrow-up
        4
        ·
        1 year ago

        i have used a long tin can, similar to a pringles can before to steal a neighbour wifi back in the day. this is legit

        • 9point6@lemmy.world
          link
          fedilink
          arrow-up
          2
          ·
          1 year ago

          I’ve heard about this but not had loads of time to read into how it works and how effective the algorithms are. Do you happen to know about it in depth? I’ve wondered for a while how much efficiency is actually improved by the beamforming and what the limitations are

          Like I’ve read about cantennas that fire 802.11g over several hundred meters, which in my understanding is obviously is out of reach for regular WiFi antenna even with beamforming algorithms (or is it? I actually don’t know)

          • Bytemeister@lemmy.world
            link
            fedilink
            Ελληνικά
            arrow-up
            3
            ·
            1 year ago

            Read up on Yagi antennas.

            Essentially you are stacking waves. If you have an array of trasmitters, you can have them send a constructive signal or a destructive signal as a signal “wave” passes them. Using this property, you can change the shape of the wave propagation. Think of it like throwing a stone in a pond, and then throwing in a second or third stone at the exact right moment to combine the ripples, creating a stronger wave in a particular direction depending on when and where you throw the stones.

            • 9point6@lemmy.world
              link
              fedilink
              arrow-up
              2
              ·
              1 year ago

              Man, I’ve always wondered how yagi antennas actually managed to produce a directional beam vs something like a dipole. Your comment has really made it click for me, honestly big thanks! Very clear 5-9

              • Bytemeister@lemmy.world
                link
                fedilink
                Ελληνικά
                arrow-up
                2
                ·
                1 year ago

                Yep. Now imagine each element on the yagi antenna is its own antenna that can be triggered by a controller, instead of just being one big “dumb” antenna. Now by timing the “firing” of each antenna you can create a directional beam in pretty much any direction.

            • Natanael@slrpnk.net
              link
              fedilink
              arrow-up
              2
              ·
              1 year ago

              We use it for talking to distant satellites, but then we also combine arrays of large directional dish antennas with beam shaping algorithms

        • kbotc@lemmy.world
          link
          fedilink
          English
          arrow-up
          2
          ·
          1 year ago

          Yep, and the fan moving in back almost certainly will fuck up beamforming as reflections are fairly important to get the beam to do object avoidance and if your reflective surface is angled and moving quickly…