Question about GPS
Generally speaking, your sat nav should be perfectly ok on your dash, it does not have to 'see the sky' through all your car windows, although as mentioned tall buildings will affect it, as could a heated front screen. i bought one about 2 years ago here in the uk and was concerned because my car had a heater element in the front screen and i was advised to get an external ariel, but i didnt actually need to. so if you have a heated front screen, this could be the problem
Posted on Sep 07, 2008
In order for your GPS to calculate its own location, it needs to receive data reports from four or more GPS satellites. This process is normally pretty fast and will typically take approximately two minutes. However, this assumes that the GPS has a clear view of the sky.
Obstructions such as tall buildings, trees and local terrain such as mountains and hills can affect your receiver's ability to "see" the sky. This is also true of GPS's used indoors or inside of a vehicle. A GPS receiver without a clear view of the sky can take a long time to get a fix on its own location.
The process can also take additional time if the GPS has been powered off for an extended period of time or if you have travelled a long distance (greater then 500 miles) since it was last turned on.
Hope this helps!
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Posted on Jun 10, 2008
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Posted on Jan 02, 2017
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