Vacuum tube equipment

[rogerkirk]

"Stephanie Weil" 

>It's the height of the antenna  (on the top of the Empire State >Building) that gives them the coverage.

>Imagine how much ground you could cover from that height if you indeed
>were cranking 50 (or even 100) kilowatts!!

Am I mistaken, or is there some sort of "effect" where the coverage directly around the base of tower is less if the antenna is high and the power is great?   Calling tower engineers!