GPS tracking systems offer several types of mapping for you to select from. Some units have multiple choices while others have a specialized mapping system.
• Street maps
These are for use of navigation through a city or on a longer journey. In high density areas such as an urban area, you will want to look for WAAS reception as this will provide you with more accuracy. Even better is SiRF Star III Chip Set which allows you to get even better accuracy in dense areas.
• Nautical Maps
On the high seas or the neighborhood stream, having the ability to know where you are going and to find that small little cove where all of the fish are located is a great way for you to use nautical maps. GPS units with nautical maps provide you with a good amount of sight into areas that are not charted. Some will download up to the minute details for you to use.
• Topographic Maps
How about knowing the hills and bumps in the road before you get them?
• Aeronautical Maps
If you are flying your favorite little plane, these are ideal tools to keep with you.
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