An experimental study of the propagation of 10 cm radio waves over a short non-optical sea path

A series of tests in microwave propagation over a sea path of length 1.14 times the optical horizon was conducted off the coast of Natal during the winter months, April¿August, 1953. The purpose of the investigation was to study the effect upon signal strength of variations in the structure of the refractive-index profile of the atmosphere in the first few hundred feet above sea level. The radio equipment operated at a wavelength of 10cm, and vertical polarization was used throughout the tests.