I agree with most of this.

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  "content": "I agree with most of this.\n\nBut tropospheric ducting also applies.\n\nAnd of course signal attenuation due to ambient atmospherics particulates.\n\nAlso, I'm not sure whether modulation scheme has any bearing on bendyness; I thought only wavelength and ducting.\n\nI think my point is that RF wave propagation is a suboptimal way to prove or disprove flat earth, due to an overabundance of confounders.",
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