Actually, it doesn't. 670 is 30 kw, and the antenna is less efficient, apparently. The 720 5 mv/m covers about 15% more people, and a heck of a lot more geography. And... KMZQ is highly directional, with most of the signal headed away from population areas daytime.
I'm referring to the directional nature in terms of daytime coverage. If not for the pattern both stations would not be competitive with each other once you get to Boulder City. KXNT has significant issues due to protecting 830 Tucson.
Very interesting I did not know that about the efficiency. Is this due to poorer ground conductivity where 670 - on a slightly sloped area or near the Snow Mtn. Indian Reservation - compared to where 720 is in a low spot in the topogaphy west of Lk. Las Vegas?
