[Moon] [Moon-Net] GPS accuracy

Conrad PA5Y g0ruz at g0ruz.com
Wed Jun 12 09:34:39 CEST 2019

I completely agree, I have never in my life seen such a load of nonsense! A complete clown among clowns I would say. But they are only fooling themselves.


Conrad PA5Y

From: Moon-net <moon-net-bounces at mailman.pe1itr.com> On Behalf Of Keith Naylor via Moon-net
Sent: 12 June 2019 08:29
To: moon-net at mailman.pe1itr.com
Subject: Re: [Moon-Net] GPS accuracy

Like most thing in life there are uncertainties....

"The United States government currently claims 4 meter RMS (7.8 meter 95% Confidence Interval) horizontal accuracy for civilian (SPS) GPS. Vertical accuracy is worse."

"Garmin GPS receivers are accurate to within 15 meters (49 feet) 95% of the time with a clear view of the sky. Generally, users will see accuracy within 5 to 10 meters (16 to 33 feet)

under normal conditions. Certain atmospheric factors and other sources of error can affect the accuracy of GPS receivers."

So there you have it. You do not know exactly where you are or what Grid Square you are in unless the error margins are added to where you "think" you are.

Frankly, my entire point, is that who ever dreamt up this rule 4(d) is a complete clown....


Keith G4FUF

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