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Estimates are given of average ground-to-air interference for a ground installation utilizing a Bendix ASR-1 vertically polarized antenna operating at 2900 Mc. Coverage is defined in terms of 0, 6, 12, and 18-db protection ratios with respect to a similar installation sending out an undesired signal, with station separations of 10, 50, 100 and 150 miles being considered. ``Coverage'' here is not synonymous with the usual concept of service, for no minimum signal is taken into account, but only the ratio between desired and undesired field strengths. Limitations of the estimates are discussed, and their derivation is explained in an appendix to the report.
Airborne Electronics, Transactions of the IRE Professional Group on (Volume:PGAE-6 )
Date of Publication: Dec. 1952