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Author Topic: Propagation rings  (Read 2709 times)

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Propagation rings
« on: March 14, 2009, 09:22:50 AM »
Hello , what is exactly the purpose of the propagation rings ? (see my screenshot )


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Re: Propagation rings
« Reply #1 on: March 14, 2009, 09:46:37 AM »
Apparently it is to indicate the maximum possible Mode-S range at the maximum altitude used by most aircraft together with a clear RF path to the horizon when on flat terrain.