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Abstract
Using two transmitters and two receivers operating in the 2000 mc./sec. region, the following experiments were carried out, in the presence of an intervening ridge, between terminals which were 14 km. apart: (i) Using horizontal as well as vertical polarizations, beam shapes were determined in the azimuth plane and vertical plane; (ii) dependence of signal level on the angles of elevation of the axes of the parabolic mirrors was also studied; (iii) polarization patterns were recorded by rotating one dipole and keeping the other fixed; (iv) the effect of defocussing of the dipole with respect to the parabola on the received signal intensity was studied.