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    Re: GPS AntiSpoof and integrating sextants?
    From: David Pike
    Date: 2021 Jan 22, 01:45 -0800

    Tony
    Just to clarify, 40, 120, 200 suggests a Russian Plath SOLD sextant copy, either bubble, or gyro.  If ‘GPS Spoof Pro’ is set to ‘Pause’ after the 120-second shot, subtracting 15.coslat.sine azimuth from the ‘GPS Spoof’ altitude should give a value comparable with the sextant altitude at mid-time.  You will no doubt have read these: 
    The SOLD KM2 Bubble Sextant | The Nautical Sextant (sextantbook.com) 
    The German Gyro Sextant.pdf
    Microsoft Word - ARL report Plath Gyro Octant Complete.doc (fer3.com)
    DaveP  


       
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