December 1969 | NTIA Technical Memo ER LTM ITS 210

UHF propagation measurements from elevated to buried antennas

F. George Kimmett; Larry G. Hause; P. L. McQuate

Abstract: This report describes many of the UHF propagation characteristics between aircraft or satellites and buried antennas. A vertical monopole was used as a reference antenna, and the propagation characteristics of an annular slot and other antennas, omnidirectional in azimuth, were measured. The effects of reflecting planes used in conjunction with buried elementary antennas were measured. Site power gain patterns were measured from the buried antenna site at elevation angles up to 700 • These tests were made over a reasonably smooth plane, on paths of O. 03, 0.06, and 1 kIn, and at various transmitting antenna heights, with a helium-filled balloon. In some of the tests security fences were used.

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Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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