-=> Quoting MIKE ROSS to Leonard Erickson <=-

 MR> "Leonard Erickson" wrote to "Phil Marlowe" (06
Jul 03  01:24:06)
 MR> --- on the topic of "RECEPTION, TV"
 
 LE> Don't forget that "flat" land *curves*. That antenna may be low the
 LE> horizon where you are. I don't have the formulas handy to figure out
 LE> how high you need to be to see something over the bulge of the Earth's
 LE> surface at a given distance.

 MR> I just read a chart for VHF propagation. There's a dotted line labeled
 MR> "Line of sight" at about 70-80 miles. It shows reception of VHF at
 MR> over a 200 mile limit however I suspect that would be mostly for FM
 MR> radio. High UHF is mostly limited to "line of sight"
unless there is
 MR> ducting. As for the flat land, the "line of sight"
distance increases a
 MR> lot if the antenna site is elevated such as when erected on a mountain
 MR> top. 

Yep. The "horizon" distance calcs get a bit weird.


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