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    Re: Practical Radar Plotting
    From: John D. Howard
    Date: 2018 Aug 13, 21:01 -0700

    Mark,

    As I had said before, if the map is small area then any projection will be OK.  A UPS we all use to plot our cel-nav LOPs is an example of a small area chart.  Usually 2 degrees by 2 degrees - 120 NM high and maby 100 MN wide.  Not Mercator or Lambert or anything but a good approximation.  At the small range you say your radar is used at then plot a straight line without fear.  Just rember, a radar bearing, a RDF, or even a visual sight is a great circle.

    When we flew across oceans we could get a radar fix at 250+ NM and radio bearings much longer.  A Mercator chart was not a good choice.

    John H

       
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