Waldemar DK3VN wrote:
> Hi,
> during my last business trip I have thought about a new concept.
> OK, OK, it's not so very new, but new in the RTTY scene. ~:)
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This is a great idea.
----------------------------
> The calculation should assume the earth is a perfect sphere with
> a radius of 6378 km. The basing point for the distance calculation
> is the south west corner of the Maidenhead Grid Square.
------------------------------
But, acknowledging that the Earth is not a perfect sphere ( It's
squashed at the poles )
but making it a perfect sphere, the radius of the Earth is not 6378
km, but 12756.597 km or 24,902 statute miles. ( and that distance is
almost exactly twice the 6378 quoted)
All should also keep in mind that when I attempted to qualify as a
"command navigator" in the USN, my "test" star shot put us over the
Sahara, while in fact, we were in the Denmark Straits. Also note that
with a bit of extra instruction, I subsequently qualified as a
"command pilot" for the flights we called "Polar Stars", which located
the exact position of the magnetic North pole. Little bugger moves
around quite a bit. Interesting point is that while at the magnetic
North Pole, the only way you can go is South.
):>
Ed
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