• @freijon@feddit.de
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      02 years ago

      I’m no expert but from my experience it is the other way around: Upload speed increased, Download speed decreased. Which makes sense because the outgoing data is boosted by the wind whereas the incoming traffic has to overcome the wind. If you want to increase download speed I suggest placing a hoover behind the router.

  • @conditional_soup@lemm.ee
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    2 years ago

    I am a computer programmer, this is exactly how it works. Why else do you think electronics have fans in them if not to blow fresh, crisp wifi in and stale, soggy wifi out?

  • @npz@lemm.ee
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    222 years ago

    yes and you can also leave out a plate of cookies where you want a strong signal so the wifi waves will go there when they’re hungry

  • @Gladaed@feddit.de
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    212 years ago

    May work in niche cases where passive cooling is insufficient and overeating causes Instabilität.

  • Marxism-Fennekinism
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    2 years ago

    If it has metal blades then it will reflect some of the radio signals, making the transceiver more directional. With how it’s set up in the post, it could potentially be a benefit to devices that face the front of the router and fan, but a disadvantage to devices behind the fan. Same logic with that Facebook trick of putting tin foil or cut up drink cans behind the antennae.

    However, most newer and higher end routers use beam forming antenna arrays which are already directional and can automatically focus the signal toward your devices. Having reflectors around those can actually interfere with the antenna array and decrease speeds for all devices.

    • @MystikIncarnate@lemmy.ca
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      52 years ago

      Beam forming is a bit more complex than just being directional.

      It makes the signal stronger in the target location, but the antenna is still very Omni-directional. It’s just using extremely small signal offsets between transmission antennas to optimise the amplitude of the signal in the area of the receiver.

      Directional antennas can still very much help, as well as wave guides to push more signal in the desired direction (sacrificing signal in another, potentially undesired or unrequired direction).

      Source: over 10 years in IT with a focus on wireless network technologies.

      It gets really interesting when you get into mimo and multi-user mimo, and the system is transmitting on the same channel to multiple endpoints at once, with different data for each. Shit is crazy.

  • @Agent641@lemmy.world
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    2 years ago

    The wifi beams come out in all direction. You can help boost the wifi by placing a mirror behind the router. Then the rays will be reflected back to you and not wasted.

    • kase
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      72 years ago

      I’m about 62% sure this is a joke…

      Please help, I’m clueless about this kind of stuff.

      • Obinice
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        62 years ago

        Look up the DIY parabolic reflectors people used to use on their WiFi antennas, they did actually work! I used one and recorded a marked improvement in WiFi strength at the furthest point in my home that was previously a low connection quality spot.

        Radio waves come out of an antenna and just go in every direction, so a router against your outer wall is wasting a lot of its energy just directed into the neighbour’s house. If you can reflect some of that back in, you get improved signal reception. It’s very cool :-)

        • @AccountMaker@slrpnk.net
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          32 years ago

          But if waves transmit information, and the same information comes at all sides, won’t the signals that bounce off the reflector arrive after the waves with a direct line and thus transmit redundant information?

          • @MystikIncarnate@lemmy.ca
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            32 years ago

            Yes. They will.

            When creating a reflector, you want to place it a specific distance from the focal point, so the waves are in sync with the waves going direct to the device, they will be offset one or two full wavelengths, but that hardly matters. About a half wavelength away from the emitter/antenna is ideal.

            There’s also a way to calculate the parabolic arc you want to make the signal very directional (the way a satellite dish works, but in reverse. Those dishes collect and concentrate the signal, in this case you want to redirect the emission in the same direction - think about it like a flashlight, where the majority of the light is in a small cone in the middle, but there’s still some light going everywhere that isn’t blocked by the mirror reflector dish in the flashlight).

            There’s a hundred different ways to get this done, tons of antenna designs to work with, but in general, wifi uses beamforming, which is a method to use multiple antennas that are transmitting the same signal, but they have the exact waveform slightly offset from eachother, which makes the signal much stronger in the complementary direction. It basically generates a beam the hard way. Wifi has gotten very good at doing this, so reflectors and directors, and all that fancy antenna design stuff isn’t really required.

            The only real improvement to be made, given wifi’s current complexities, is to put in larger antennas; most wifi antennas are quarter wavelength or often smaller… “Upgrading” to well matched full wavelength antennas may yield some benefit, but there’s a lot of nuance there too. It’s a deep subject so I’m just touching on how things go. I find it fascinating, I’m sure not everyone does.

      • @NicolasVerdi@lemm.ee
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        42 years ago

        It’s the same principle of al satellite dish and it works, but I’m 86% sure that mirrors won’t affect wifi, so we’re still not at 100% but getting there.

        • @pedro@lemm.ee
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          62 years ago

          Depends on what frequency your “mirror” mirrors.

          A traditional one reflects higher frequency of electromagnetic rays (visible light) than what you need for wifi (in the microwave frequencies)

          • @Bene7rddso@feddit.de
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            22 years ago

            If it’s a silver layer on a glass/plastic pane (like basically any mirror) and it’s big enough (more than idk, let’s say 20 cm to be safe) why wouldn’t it mirror the lower frequencies too?

            • @MystikIncarnate@lemmy.ca
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              32 years ago

              Not enough interaction with the waves.

              I’m not fully versed on all the physics of it, but to my understanding, the layer of silver that makes up the reflective surface of a mirror is crazy thin, like, less than the thickness of paint.

              The basic concept I was explained is that the longer the wavelength (lower frequency) the easier it is for it to penetrate obstacles, specifically things that are relatively opaque to radio waves. The very high frequency (small wavelength) waves of light, are so small that almost everything interacts with them; so when they make it to the silver layer, despite that silver layer being impossibly thin, the >100THz waves, will bounce. When dealing with stuff that’s much lower frequency (like 2GHz to 5Ghz, many orders of magnitude lower frequency), there’s not enough of the material to interact with the wave to have any significant effect on its propagation, so it passes right through.

              This is a good observation and a great question. I’m sorry I couldn’t be more specific, I’m just not as well versed in the physics of it all to really get into the details; but I hope this helps.

      • @MystikIncarnate@lemmy.ca
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        22 years ago

        So, wifi is made up of radio waves, specifically micro waves, which are all sub-classifications of electromagnetic waves.

        There’s another common electromagnetic wave you’ve certainly heard of: visible light.

        While the wording is a bit awkward, the previous poster isn’t wrong. Just, in radio, it’s referred to as a reflector, not a mirror. Same principle, different area of technology.

        EM is incredibly interesting especially since all data communication, with the exception of copper wires, is EM. Fiber optic is light, which we’ve established, is EM, and wifi is radio, which is also EM. Apart from the copper in your ethernet/DSL/Coax cable, it’s all EM. It’s fascinating to me that we use EM for so much, and fiber is considered the pinnacle of data connections, yet, light propagates slower through glass than radio propagates through the atmosphere, so technically, wifi can get a signal from A to B faster than fiber can… and we put that stuff in our house.

        All EM is at, or near, the speed of light. Glass, used in fiber, tends to slow the light down about 30% or so… that’s fascinating because the internet is largely fiber, and so the information for this or anything else on the internet is being delivered to your device at, or very near the speed of light.

        Anyway, I’m off topic. I’m just a gigantic nerd about this stuff.

  • raubarno
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    62 years ago

    Ask ElectroBOOM, he would definitely make a video rectifying it *bang* OUCH F___ S___ why is there a loose wire?