PPI antenna for long range early warning

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.4224/21276393
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  1. National Research Council of Canada
FormatText, Technical Report
Series titlePRA; no. PRA-86
Physical description27 p.
Abstract
The PPI (LREW) was developed to provide an all-round looking early warning system on 90 cm. The considerations leading up to the choice of this frequency will be found in PRA-85. It was required to obtain ranges of 150 miles with an azimuthal accuracy of +1°. This meant that as narrow a beam width as possible was required, and as great a gain. To speed of approximately 4 r.p.m., low angle coverage was to be accomplished by mounting the antenna on the top of two hundred foot tower. This latter fact made the problem of wind resistance of great importance.
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PublisherNational Research Council of Canada, Radio Branch
LanguageEnglish
NPARC number21276393
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Record identifiere4d5621c-2797-4430-b1e5-6422819cb9fe
Record created2015-10-07
Record modified2020-06-02
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