Radio signals dissipate per inverse square law, and due to l...

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  "content": "Radio signals dissipate per inverse square law, and due to limited permeability \u0026 permittivity of free space.\n\nAlso, radio signals can and often do bend through free space.\n\nSignal in Oahu can't be heard in LA because the signal-noise ratio is insufficient for the receiving equipment to be able to filter.",
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