Lux, Jim (337C) wrote:
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of Robert Atkinson
Sent: Thursday, October 01, 2009 1:44 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] GPS from a window seat
Hi,
Apart from the CoCom / Itar restrictions, some early portables had limits to
differentiate the much
more expensive aviation versions. This seems to have stopped. The Garmin GPS-II
had a speed limit of
about 100mph, the GPS-II+ and GPS-III didn't.
Good thing they removed the distinction..
After all, my Datsun 280Z would go faster than my Piper Cherokee. Whether I
would want to be staring at a GPS display in my car for navigation cues at 130
mi/hr is another good question...
I guess you would like to glimps at it now and then, just as you do with
other meters. Infact, that aspect is true for both the car and the
airplane. For neither of them you should stare at the GPS. There's the
real world out there to keep control of.
At best, the GPS helps you to keep concentrated on the world around you
and your vehicle when you are going somewhere new rather than having you
dechiffering maps and correlate that with what you just saw... for the
car it is worse than for airplane.
Cheers,
Magnus
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