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    Re: sextant without paper charts
    From: Lu Abel
    Date: 2008 Nov 11, 10:11 -0800
    SPS - Standard Positioning Service -- the ones we civilians get.   Accuracy 15 meters

    PPS - Precise Positioning Service -- encrypted signal only for the US military, accuracy 2 meters.

    Sounds like Scott was flying something with a US military logo on it...

    Bill wrote:
    Scott Owen wrote:
      
    I could receive both SPS and PPS
    signals so I always knew my position very accurately.
        
    
    For those of us--at least me--that lug around a sextant and hand-held GPS,
    could you go into more detail on the meaning of "SPS and PPS
    signals?"
    
    Thanks
    
    Bill B.
    
    
    
      

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