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Old June 12th 09, 05:17 AM posted to rec.aviation.piloting
Bob Noel[_2_]
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Posts: 39
Default ATC Radar Question

Jackie wrote:
Clark wrote:
Jackie wrote in
:
[snip]
Does precision approach radar require a transponder to report altitude?

PAR uses a height finder radar to provide sufficient vertical
resolution for precision approaches.


Could you elaborate on how the "height finder" works?


the elevation radar determines altitude the same way the azimuth radar
determines bearing.