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A comment on Back-ups for GPS: Satellite-navigation systems at risk of jamming. Parent comment

Re:Back-ups for GPS: Satellite-navigation systems at risk of... by therein on Friday May 07, 2021 @10:18PM (#27083083)
All the more reasons to use something digital, isn't it? Would make it much easier to figure out the horizon without actually seeing it.
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Re:Back-ups for GPS: Satellite-navigation systems at risk of... by throw0101a on Friday May 07, 2021 @11:15PM (#27083478)
Or you can simply buy an artificial horizon for less than US$ 40:

* https://www.davisinstruments.com/product/artificial-horizon/

* https://www.starpath.com/catalog/accessories/1840h.htm

* https://www.celestaire.com/product/davis-artificial-horizon/

They've been around since (at least) 1907:

* https://www.scientificamerican.com/article/an-artificial-hor...

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