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Date:      Thu, 15 Nov 2001 09:06:00 -0700
From:      Nate Williams <nate@yogotech.com>
To:        Warner Losh <imp@harmony.village.org>
Cc:        Patrick Li <pat@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: ports/astro/xearth/files freebsd.committers.markers 
Message-ID:  <15347.59368.149899.649916@caddis.yogotech.com>
In-Reply-To: <200111150335.fAF3ZW708276@harmony.village.org>
References:  <200111150305.fAF35PA38949@freefall.freebsd.org> <200111150335.fAF3ZW708276@harmony.village.org>

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> : Follow traditions and add coordinates of where i currently reside to
> : the ever growing list of GPS guided missle targets
> 
> One of the few US export restrictions is still in GPS receivers.  If
> you are moving at more than 1000m/s, the recievers are required to
> stop giving position data that is changing faster than that.

The actual limits are as follows:

US export restrictions limit most receivers to 60000 ft or 18000 m. 
US export restrictions limit most receivers to 999 kts or 515 m/s. 

So, you could theoretically go faster than 1000 knots if you were under
the 60.000 foot limit, but most GPS's enforce the limit for either
violation.

Also, as I understand this (from doing research lately), all
consumer-grade GPS receivers enforce the limit, since I doubt any
consumer needs to worry about going faster and/or higher than the
limits.



Nate

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