• shortwavesurfer@lemmy.zip
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    13 days ago

    The article says that it’s six gigahertz and that they are putting one unit on each side of the wall they want to blast through. So the signal is extremely strong right at the wall and then goes through it weakening and hits the other device and then is re-transmitted or whatever. By putting the routers directly on the wall, next to each other, they have enough power to get through the obstruction. But if they were in the middle of the room, for example, they probably would not.

    Source: A passion for wireless technologies and myself being a licensed amateur radio operator.

    • InvertedParallax@lemm.ee
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      13 days ago

      It’s the medium transfer that always kills you, this minimizes that by limiting it to 1 medium (concrete) and not doing air-concrete-air.

      You can do eq and compensation for 1 medium, 2 media are harder.

      • this_1_is_mine@lemmy.world
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        13 days ago

        2 media is concrete air or… Its 3 media when you have add another air gap. And each transition is orders of magnitude of power requirments