GPS: Global Positioning System. If I buy a GPS system do I also have to pay a fee to find addresses?

No fee, but you may have to buy map updates every couple of years.

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Well through triangulation and radio waves. It's quite interesting. You should see some of the new surveying equipment and how accurate it is using GPS. When staking oil wells, pipelines, ect..... you can be no more than I think 3 inches off. Especially with power poles they have to be right in line. But anyway the new equipment gets within a 100th of an inch. It's amazing. Especially when your base is a mile or two away and your within that tolerance on both elevation and distance. When I was a surveyors hand we would set up a base consisting of a satellite dish and an antenna over a cap marking section lines. You had to level the dish right over these caps placed in section corners. Then you had a dish you carried on a pole. Well the dish you carried, the base, and orbiting satellites would all communicate to form a triangle and put you right where you need to be. Whether it was a corner of a location, a pit corner, a pipe line, center of a road, exact spot to drill for oil, etc..... all within a 100th of an inch. Well good luck I hope this helped. Oh and most handheld GPS devices will get you within 10 to 20 feet of accuracy.

Most GPS devices are free to use. You may have to pay to get optional software and map updates.

Siempre he confiados en los GPS que he comprado aquí, la ultima vez he comprado un GPS para ponerlo en la bici, además de una buena entrega el producto cumple mis expectativas, un GPS interesante que además de su función, que esta perfecta , tiene también pulsometro, una compra muy buena.

No they are free to use !

GPS HOME PAGE

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