But don’t get your hopes up.
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SolderSmoke Daily News — Ham Radio Blog
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“At night the ionosphere is denser and more reflective.”
What obscure new science has determined density as a factor? I’d always been taught it was angle of incidence at the boundary (much like water/air) varying with the magnetotail’s variation in the solar ‘wind’ that accounted for the variation, with perhaps density contributing the ‘refraction’ rather than reflection …
Perhaps they’re looking at using the ‘meteor scatter’ effect? if so, they’ve got a real uphill battle. M-S is very local and transient – reliable comms would need wider path/patch of ‘mirror’ created on-demand, and longer duration – solar wind would disperse it.