MF Radio Field Strength Measurements in Desert Terrain near Yuma, Arizona.

Abstract : The field strength of the commercial radio broadcast station KBLU was measured at several hundred locations in the desert southeast of Yuma, Arizona, to study MF ground-wave propagation over the desert valleys and mountain ridges. Field strengths below the surface of the desert floor were measured in specially drilled holes to observe the penetration of MF into the desert soil. Idealized propagation path models are shown to produce effects similar to the observations. (Author)