Radioman390 wrote:
The biggest AM station was 1 Million Watts (1 megawatt).

There are a handful of 2 megawatt AMs - at least one in Saudi Arabia.
(where I'd imagine the ground conductivity is horrendous so it still
doesn't "get out" all that wellgrin)

UHF TV stations are licensed up to about 3 Megawatts, but this is "beamed" by
concentrating the signal along the horizon. The actual transmitter is 100 KW or
so.

5 megawatts is the maximum legal power for analog TV in the U.S.. I'm
aware of transmitters available up to 220KW output.

--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com