• AmidFuror@fedia.io
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    2 days ago

    If they’re anything like the ones used for cell towers in the US, they’re very obvious.

  • tal@lemmy.today
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    2 days ago

    I have, in the past, wondered how practical it would be to take a highly-directional antenna and a camera mounted on a computer-controlled tripod head and then pan the thing around for a bit and create an image with a heat map overlay showing where the signal is strongest. I was thinking about making a map showing WiFi networks.

    If you have some fancy RDF antenna array, which I imagine that military signals intelligence people do, might not even need to do the panning.

    • CanadaPlus@lemmy.sdf.org
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      14 hours ago

      Hmm, how much heat does it take for something to become visible? A high power antenna will get hot, but if it’s a signal type that’s jamming resistant otherwise maybe it can use a normal civilian level of power.

      • lemming741@lemmy.world
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        14 hours ago

        Emissivity is probably different, and if the shell is thin and plastic, probably closer to ambient temp

        • CanadaPlus@lemmy.sdf.org
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          13 hours ago

          Oh right. I supposed unless it’s absolutely cooking a thermal blanket would hide it decently well. You’d need to be careful the radio/microwave frequencies of interest aren’t blocked as well, though.

          Edit: If it’s a non-directional transmitter you can just find it pretty easily from it’s transmissions anyway.

          A receiver should be totally cold.