and the global coverage map shows
http://www.schriever.af.mil/GpsSupportCenter/reports/uclas_world_dop.gif


 from 
http://www.navcen.uscg.gov/gps/status_and_outage_info.htm

that China is not covered to well.  or Canada, or Hawaii,
or much of africa, or our own mid-west

Sorry. Gotta see 3 to get a fix, and your gps "remebered"
it was in SoCalif, and can't figure out what happened 
with just 2 birds visible.

That's why getting a subscription to a enhancement 
service is needed sometimes, but they run off a ground 
station.


--- Chris <[EMAIL PROTECTED]> wrote:
> 
> I have a Garmin eTrex Venture GPS unit.  Works fine in
> here in Pasadena.  I
> get the minimum number of satelite needed to make it
> work.  I dont use any
> external antennas.  It works fine out of the box plus
> batteries.
> 
> I visited southern China and was sad to find that i could
> only pick up 1
> satelite from the rural area i was in.  I went to a
> 'larger' city and tried
> it from the roof of my hotel, and still just 1 satelite.
> There were no significant mountain ranges within sight,
> and I could see a
> long way off.
> I later visited Hong Kong where there is lots of
> technology, but only could
> hit 1 and sometimes 2 satelites.  Not enough to work.
> When I returned to Pasadena I opened my suite case, fired
> it up, and it
> worked like a charm.
> 
> Does our military cripple GPS signal strength over China?
>  Can anyone offer
> another explaination?
> 
> Chris
> 
> 


=====
"Welcome to the Darwinian Gene Pool Preserve. 

Go ahead and lean over the safety rail as far 
as you like and hand feed the carnivores."
                    Non-Sequitor by Wiley

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