A base map. This is very highly recommended. The additional cost is marginal, and the increase in the equipment's usefulness is substantial. Driving directions to the area near a cache can be incredibly useful, so consider this feature in a higher end device. How many channels? Most GPS units today now have 12 parallel channels. Channels help to acquire GPS satellite signals faster and more accurately.
An external antenna jack? With new GPS devices this has become less important since the newer chips are sensitive enough to acquire signal inside a vehicle. However, it is not always possible to obtain good satellite coverage through a front windshield; this is when an external antenna can help. Even backpackers will benefit from the ability to safely store the receiver inside a pack with an antenna attached to backpack shoulder straps. It can also help outdoor use in places, like heavy tree cover, where signals are weak.
Interface jack. If you are using the receiver with a computer, be sure that it includes an interface cable so you can quickly load maps and waypoints onto your device. Newer GPS units often support USB. If you purchase an older GPS device and have a newer computer, you may need to purchase a USB to serial port adapter as well. If you own a Mac, you should check to ensure that it supports the Mac operating system. The amount of memory will determine how many maps you can hold. This is used to load detailed topographic maps, street-level maps, or additional waypoints into the receiver. Detailed maps can use a great deal of memory on your device. Consider internal storage capacity. Higher end devices also usually accept a memory card for additional storage.
The power source. It is preferable to have a device that can support external power, like a cigarette lighter power cable. Due to the power requirements the device should support standard batteries (AA or AAA) for easy replacement on the trail. Lithium batteries are recommended for newer GPS models to ensure a longer battery life, and power geocachers should consider rechargeable batteries.
A rocker keypad, or touchscreen. Using a receiver without a rocker keypad is like using a computer without a mouse. Some newer GPS units have touchscreens which helps immensely when navigating using the maps. The screen size for visual ease of operation, use a device with the largest screen that can be realistically carried. Screen size is measured diagonally. Color is great and helps define map features and a backlight is important, although both features burn additional battery power. A screen protector is important in preventing scratches out on the trail.
Waterproof? Sooner or later your device will get submerged. Get a device that is at least water-resistant, although an IPX7 designation is preferred. (An IPX7 designation means the GPS case can withstand accidental immersion in one meter of water for up to 30 minutes). Plastic bags and boxes are also recommended for added protection. Geocaching mode. An increasing number of higher end GPS devices now have functionality specifically created for geocaching. Some will also store your field notes to help you log your caches after a hunt. Specifically for Geocaching the Garmin GPSMAP 60CSx, Garmin 76CSx, Garmin Etrex Vista HCX, and Garmin Colorado 400t.
Diana is an expert in handheld GPS devices online
Buy 760 GarminBuy 350 Nuvi GPS
Garmin Nuvi GPS Best Buy
No comments:
Post a Comment