Accession Number : AD0650838

Title :   EVALUATION OF VHF AND UHF ANTENNA ASSEMBLIES FA-5526, FA-5527, FA-5528.

Descriptive Note : Final rept.,

Corporate Author : NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J

Personal Author(s) : Jones,Floyd F.

Report Date : DEC 1965

Pagination or Media Count : 85

Abstract : An evaluation of developmental models of VHF Antenna Assemblies FA-5526, FA-5527, and UHF Antenna Assembly FA-5528, was conducted to determine their performance characteristics, capabilities, and limitations for utilization in future developmental efforts. The evaluation included the accomplishment of antenna range and flight radiation patterns for each type of antenna, measurements of voltage standing wave ratios, intercoupling measurements between antennas when installed in a hexagonal configuration, and signal intensities received during light aircraft operations, while landing and taking off at airports ranging from eight to fifty-one miles from the antenna test site. It was concluded that, although the FA-5526, FA-5527, and FA-5528 Antenna Assemblies provided adequate overhead coverage, and acceptable isolation between antennas installed in a hexagonal configuration, the large size of the antenna assemblies, initial cost, weight, installation requirements, and siting effect on low angle coverage, reduced the desirability of the antennas for operational application. It was recommended that development efforts be continued with due consideration accorded the overhead coverage provided by the antennas evaluated, and the reduction of cost, size, weight, and installation requirements. (Author)

Descriptors :   (*DIPOLE ANTENNAS, PERFORMANCE(ENGINEERING)), VERY HIGH FREQUENCY, ULTRAHIGH FREQUENCY, ANTENNA RADIATION PATTERNS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE