These are discussed more below under “Customizing the Garmin eTrex 20.” More eTrex 20 features of note Route, Track and Waypoint management Profiles allow you to save different groups of settings you can have one for geocaching, one for mountain biking, one for road riding, etc. The Calendar displays dates when waypoints and tracks are saved, and it also displays geocaches that you’ve logged.
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Now that we have BirdsEye Topo, there isn’t as much need for custom maps, but hey, you can put a PDF park map on your eTrex, and that’s pretty sweet. Simply choose a track to navigate and it will construct a route of waypoints along the track, add in high and low points, and give you the actual track mileage to each point, as shown at left. I have written before about advanced track navigation, but basically it will give you the best of both worlds when it comes to following a track or route. There is nothing quite like having the map on your device look exactly like the USGS topo in your hand. I absolutely love the BirdsEye topo product. I find it less useful under the dense canopy of the eastern US. While the images below weren’t captured on an eTrex, they should give you an idea of the capabilities…īirdsEye aerial imagery is particularly useful for urban cachers, outdoors lovers in the open landscapes of the American west, and for boaters. Each runs $30 for a one-year subscription imagery you’ve downloaded during that period can still be used, even if you don’t renew. The eTrex 20 is fully compatible with Garmin’s BirdsEye products, including their aerial imagery and topo maps of the US and Canada. I’ll have more to say about geocaching in the performance section of this review. The eTrex 20 also allows you to filter caches, letting you search by size, difficulty, terrain, etc. This gives you the ability to view description, hints, log, etc., in the field. Many of the features found on higher-end Garmin handhelds are now available on the eTrex 20. I’ll talk about this a bit more in the performance section of this review. This may be especially true at northerly latitudes and in urban (and natural) canyons. Theoretically, GLONASS will improve accuracy. There is an option to use GPS only, but no option for GLONASS only.
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The one item found on the new eTrex series missing from all other Garmin units is the ability to use GLONASS as well as GPS satellites. If you select another screen (e.g., map) and then press the menu button, you’ll find a context-sensitive menu (shown below at right). You can change the order of items by pressing the menu button. When you power up the eTrex 20, you’re taken to the Main Menu (below at left). With 1.7 GB of internal memory, many users will never need to make use of the memory expansion slot.
Here’s the battery compartment, showing the microSD card slot and the mini-USB connector under the top rear flap… Oddly enough, I had no trouble removing it from the standard Garmin bike mount. Here it is with a carabiner clip attached, which I found somewhat difficult to remove. Unlike the Oregon and 62 series, the spine is plastic, which could lead to some wear. The image below of the rear of the unit shows the mounting spine for a bike mount or carabiner clip (not included with the purchase of the eTrex 20, sad to say, although a lanyard is). The eTrex 20 has a bright but small display that is easily visible in sunlight or with the backlight engaged.
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