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So how do you choose which GPS to buy? Well with the wide range on offer it's sometimes hard to differentiate. The secret is deciding what you want to use it for.
If you just want it as an additional safety device in case you need to check your position, but most of the time it will sit in your pack, then you don't really need to look beyond the basic models.
If you want the ability to transfer routes to a computer and use digital mapping the choice comes down to a combination of factors including weight/battery life and the number of routes and tracks you need to store.
If you prefer to have an on-screen OS map then you need to look at the high end stand alone GPS units or a PDA based solution.
For hill walking-use, any GPS should as a bare minimum:
Display your position as a grid reference related to the mapping system of the country where it is being used
- Be capable of updating at least every second
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Allow the recording of a position as a “Waypoint”
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Allow you to save the positional and route data for future reference
Facilitate the navigation between set locations by displaying information on distance and bearing
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Be simple to use in the outdoors environment
Once you progress from a basic receiver there are a number of additional features available:
- On-screen mapping
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Increased storage of waypoints, routes and tracks
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PC connection
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Memory Card storage expansion
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Electronic compass
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Altimeter
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Waterproof rugged casing
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Audible alarms
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Upgradeable firmware
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EGNOS compatibility
Obviously the more features you choose the more you can do with your receiver, but also the higher price you’ll have to pay.
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