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222 of 230 found the following review helpful:
 Excellent upgrade from etrex vista hCX Oct 11, 2009
By Mark Witt
After losing a Garmin etrex vista hCX which I loved, I decided to go with the Dakota 20 (D20). I will be comparing the two in the review.
Maps and Storage:
The D20 comes loaded with a basemap, which has most major highways, but no streets. So for your purpose, you can choose City Navigator (required for auto navigation to work), or Topo 2008 (shows mountain countours & most lakes). Luckily, I had both Topo and City Nav on my computer.
Since the D20 comes with 850mb of internal memory, it's enough for self selected regions in Topo 2008 and/or Inland Lakes map, but not for City Nav. I put in a 4gb microSDHC card, which handled the 1.2gb .IMG file of the city navigator map. What might trouble some is that the D20 does not come with Mapsource(a great program for making custom maps, and upload trails and routes) or any kind of software. The hCX comes bundled with Mapsource. Although if you purchase the City Navigator, it comes with Mapsource.
When combining multiple maps onto the device, the D20 is much more convenient as you simply add the .IMG files (must have different file names) into the Garmin folder. D20 will automatically detect the maps and enable them. In the hCX, you had to merge all of the .IMG files into one or use seperate microSD cards, which was a toll. The D20 stores the saved tracks individually as .GPX files, whereas the hcx clumps all the trails into one file(named by date).
Auto Navigation:
I didn't find much info about Auto Navigation for the D20 before purchased, so I wasn't sure what to expect. After trying it a few times, it's definitely a step up from the hCX. There's an Automobile mode for navigation, where the map is tilted so you can see the turn coming from farther ahead. The directions text is noticeably smaller on the D20, which might be hard for some to read, but luckily you can adjust the text size of the directions. You can also customize what information you want to see (i.e-distance to destination, odometer, etc.). The D20 gives almost the same beep as the hCX when turns are approaching(no voice of course). The D20 navigation overall is more pleasing to the eye.
Battery Life:
The hCX wins on battery life 25 hrs vs 20 hours on the D20. There is a battery save mode on the D20 that definitely improves battery life. How it works is the screen will turn off in about 15 idle seconds to save power, and you simply touch the screen to see again. On D20's regular battery mode, I noticed the battery drains very quickly -definitely less than 20 hours. Recharcheable NiMH AA batteries are a must since you'll be going through them quickly. I use Sanyo Eneloop and Rayovac Hybrid. Be sure to change the Battery type under Setup>System to get the correct battery meter.
Visibility:
This has been the biggest complain by some, but I found the visibility/brightness on the D20 to be suitable for most types of lighting, including in the sun and in the dark. You can adjust the backlight (although brighter means less battery life). I'll admit it can be harder to see in certain angles of sunlight, but this hasn't been a problem during auto nav or regular use. The hCX is slightly brighter, but it's not a significant difference.
Accuracy:
During initial use, the satelites weren't detected on the D20. I had to walk outside before the Satelites could lock on. The D20 has three modes for Satellite: Normal, WAAS, and Demo. I've had the most accurate luck with WAAS as i'm assuming it's using the new satelite technology. On the D20 i've gotten accuracy as close as 10 ft, whereas on the hCX 20ft was usually the closest it would ever get. In general though, the satelite signal on the D20 is about the same as the hCX.
GPS Interface:
This is where the D20 far outshines the hCX. You navigate through all of the menus by touch. This is such a relief from using hCX's mini joystick and side buttons. What's nice about the D20 is you can move the map around by sliding your finger on it, whereas on the hCX joystick you have to sluggishly go at an angle. The D20 works much faster in operation. For example, it refreshes the maps considerably faster than the hCX. This equals less headaches when trying to pinpoint a location.
The layout on the D20 is very straight forward. The main menu contains all of the icons (Map, Where to, Track Manager, Setup, etc.) and you can scroll through all of the features by the arrows on the bottom corners. The hCX has a higher learning curve as you have to manipulate multiple buttons to get somewhere.
GPS Use:
I use the D20 for fitness activities: kayaking, jogging, cycling, and hiking. I can easily plot my map with distance and tracks(breadcrumb trails) onto websites that map .GPX files(Mapmyfitness, Motionbased). I use it too, of course, for auto navigation. The hCX is capable of doing all these things as well, but its not nearly as modern and simple as the D20. Resetting the track took me a few minutes to figure out, but it's simply Setup>Reset>Reset Trip Data. You have to use this command right before you go jogging, biking, rowing, etc. -otherwise your new track will mix in with the prior/current track. It'd be nice to have shortcuts on the D20, but no biggie.
Profiles and Customizing:
A nice feature on the D20 is the ability to create profiles. I have a profile for driving, and one for exercising. It keeps the settings and maps you want selected automatically saved into the profile (i.e- City Nav for auto, Topo for exercising). You can also rearrange or get rid of buttons in the main menu, specifically for each profile. This is extremely useful in having all the features you need in one or two screens. With the hCX, you can customize the features, although it is not nearly as simple to rearrange as the D20. The hCX does not have profiles.
Overall:
While it was quite unfortunate I dropped the hCX in the lake, the D20 has proven to be a suitable upgrade and replacement. The D20 and hCX both have their strengths and weaknesses, but i'm definitely enjoying the experience of the user friendly D20. I have yet to determine it's true ruggedness, but will post updates if anything else should be mentioned.
89 of 90 found the following review helpful:
Easiest to use handheld yet Dec 13, 2009
By Warren Merrill
I recently decided to start spending some time geocaching with my son. I finally settled on either the Geomate, Jr., the Garmin Dakota, Garmin Oregon or DeLorme PN-40. I asked questions at forums, looked at on-line reviews, checked out the ones I could find in stores (Oregon and PN-20) and finally decided on either the Dakota 10 (a great price on a bundle was the big attraction at the time) or the Oregon 300. The Geomate got great reviews and the most reasonably priced of the group, but it's only good for one thing, geocaching, tho it does it well. The PN-40 also got pretty good reviews, but the screen is smaller than the Oregon's, the computer software is in addition to the device purchase and an annual subscription (at a very fair price tho) is needed for all the available advertised map features. It's also a device with a pretty steep learning curve, especially on the trip planning side. That left the Dakota and Oregon. My two concerns on the Dakota 10 was lack of an SD slot, and a lower resolution screen than the Oregon. But for $100 savings I took a gamble and ordered the Dakota geocache and hike bundle. Turns out my worries were all for naught.
This little navigator has been a pleasant surprise. Dead simple to use, the menus made sense right out of the box, screen sensitively is excellent, even text-entry on the touch-screen is surprisingly easy and accurate. The bundle included the 100K US maps on DVD, which while very good were not as detailed as I had hoped. Not to worry. FREE user-contributed maps are available and many are very good to absolutely excellent. The Florida 24K topo I found at GPSFileDepot was in the latter category. Bathyspheric data, roads, trails, poi's, extended text descriptions of land features like springs, waterways, landmarks, historical features. All I could ask for, no added charge. No other manufacturer has a following creating compatible maps like Garmin's. And a recent Garmin application update has even added the ability to easily import and use raster maps(ie, paper maps, attractions maps, etc) in your Dakota. I'm actually working on adding an early 1900's Central Florida railroad map that I can overlay on my 24K topo for searching out old railway junctions and stations. With any luck I might dig up a little Florida history.
Here's the best part, and something I didn't know about in advance. Garmin's "Profiles" is a powerful menu feature. Out of the box, the menus are customized/organized for specific uses like Geocaching, Recreational, Marine and Automotive. I modified my Automotive to use Garmin's City Navigator (2009) map, Florida section only, with my 24K topographic maps disabled. I moved "Active Route" and "Route Planner" to the first page and customized the data I wanted displayed on my trip computer and compass pages, then saved it. Now when I tap Change Profile>Automotive, all my settings are ready to go. I customized Geocaching in the same manner, disabling road maps and enabling topo's, even disabling "ground cover" display so the map screen is even easier to see. What other device other than Garmin's Oregon series is this easy to use and set-up for your specific needs? Nothing that I've seen.
My only complaint, and it's not even a serious issue, is screen readability. It seems all the newer high-resolution handheld screens suffer screen legibilty issues compared to the older devices like the tried-and-true 60CSx. So far no one has come up with a solution. The Dakota is certainly more readable than the Oregon, even tho the backlight is not as strong. I haven't yet found a lighting condition that rendered the screen unreadable, unlike the Oregon I looked at side by side with it. Even the Oregon only needed to be turned a bit to see in light shade, a problematic light. Even when used tie-wrapped to my bike I never found the Dakota completely unreadable. But as mentioned by others, there's room for improvement. For now it's just a necessary trade-off for the better graphics and detail and easier use on these new off-road devices.
My concern on the lack of additional SD storage for maps was unwarranted. Loading the 24K map for the entire State of Florida, routable City Navigator road maps for all of Florida, 100K topos for Georgia and Alabama and a hundred or so geocache locations with details (gpx files) took less than 300MB of the available 850MB+ of on board storage. I don't think I'm going to run out of space for hundred's more geocache locations, waypoints, routes or even additional maps if needed. The Dakota 10 also lacks the tri-axial compass and barometric altimeter of the Dakota 20 (and Oregons), but I can't see any situations where I would need those. The compass on the Dakota 10 is fine for almost all my uses and I have no need for the altimeter anyway, especially in Florida.
So all in all, I really have only a single complaint. Screen brightness in certain specific lighting conditions could be improved. But in MOST sun and shade conditions it's not any problem whatsoever. My 14 year old son used it all day yesterday as both a highway navigator, calling out turns to me to an EarthCache, and a geocaching device once we got there with not a single complaint. Why is that important? He's never used a handheld before. I only pointed out the "Profiles" feature and a one-minute tutorial on getting to and reading the road map screen. The rest he figured out on his own. That's how simple it is to use. I honestly can't think of anything I missed out on by passing up the Delorme PN-40 or even Garmin's Oregon.
I recommend the Dakota highly.
40 of 42 found the following review helpful:
Great GPS Oct 01, 2009
By Glenn Gordon
I had previously owned and lost an eTrex Legend Cx. This is a giant leap forward. Garmin advertises this as their new entry level unit, but its 800 MB internal memory holds all of the topo and street maps for the eastern US. The inability to do street routing without first buying City Navigator® North America NT seems to be an artificial limitation.
The lock in is almost instant when I turn it back on at the same location that I turned it off, and it can pick up a signal from inside my house. I no longer lose the signal when I go under deep forest cover.
The screen is bright, and better than on my old unit. When I first got it, the compass was not functional, but once I updated the unit online, it worked great.
I wholeheartedly recommend this unit.
26 of 26 found the following review helpful:
 Great for the outdoors, and training - In both wet and cold conditions! Dec 23, 2010
By E. Holm
I will try to be as objective as I can.
THE SIZE/SCREEN
It has a smaller screen than it's big brother Oregon (and others), and the resolution is not the best. When that is said, if you go bigger, it will require more battery power. I have big hands, and often use gloves when hiking this time at year (December). I have mostly no problems with using the touch screen, mostly because of the big buttons. Even small buttons, when typing addresses etc, aren't smaller than what I'm used to from mobile phones etc. No big problem.
Yes, compared to a mobile phone with the same screen size, this unit could look worse. But is that really a problem?? It's more than good enough to view maps, and everything else that matters, and the colors are good. Actually, I think it's a good idea! This screen requires less battery power, and make it last longer.
One small useful possibility if you are low on batteries; The screen can be watched without the backlit on, but quite weak, of course (I often use it like this).
RELIABILITY
My unite is very rugged. A lot of soft-grip plastic all around, and the screen it self, sits a little lower in front. Nice if you should drop it, would be hard to hit the screen first unless if there was rocks ot other things in the way. Also, the unit is built tightly. The battery lid and the mini-usb flap sits tightly.
GPS-SENSITIVITY/CONNECTION
I must admit that older Garmin models (don't remember their name) was a bit more sensitive. But I have had no problems so far. It locks quite fast to the satellites, and I use EGNOS (for Europe), not WAAS that Americans use. Also no problems in heavy forest or around "tall" buildings (not much of them here in Oslo :) )
WATERPROOF
It says it's waterproof down to one meter. Since I often hike in pretty bad weather, I wanted to test this. After I bought it I turned it on, made sure that everything was fitted tightly, and put it in a bucket of water for 20 minutes. Not a bubble came out of it. Later on, after hikes, I wash the unit in the sink, getting rid of any gravel and dust, and finish with wiping the screen with a quality cloth.
COLD WEATHER
I was a little concerned when it came to a touch screen and cold weather. So far it hasn't been a problem. On one hike the temperature was minus -22 degrees Celcius (about -7.6 Fahrenheit), but since it was windy effective temperature propably was around -25 Celcius (-13 Fahrenheit). It can be A LOT colder her in Norway, but this is was the temperature I tested it in (using gloves). No problems. Just removed some ice and fog from the screen and it was ready to go. BTW, I was carrying it on my backpack, so it hadn't been in an warm environment before I used it. But,I guess there is a limit to what a touchscreen and the LCD technology can handle, so take that into account.
MAPS
One thing is for sure; Garmin/Navteq maps are expensive! It comes with a basemap, but isn't that useful for almost anything. Luckily, you can get free and legal maps from the web (often based on OpenStreetMaps, and others, incuding Topo-maps), making it quite good for most people. On the other hand, some of the Garmin maps are just fantastic! Here in Norway, there are maps called TOPO Premium-series. For the Oslo region (Norway is split in A LOT of regions), it's in 1:20000, extremely detailed, and can be routed (small hiking tracks for example). Fantastic. Here it cost about $260 US for this single map...
MENUS
Easy to use, and you can set different profile-menus for different types of tasks, like hiking, geocaching, boating, training etc.
TRAINING
Dakota 20 can receive signals from supported puls belts and cadens (cycle) sensors. This works well and can in many situations replace a typical pulse/training watch. Everything (puls and its percentage) can be uploaded to Garmin Connect. Nice feature.
COMPARED WITH OREGON 550t
I compared this unit (the Dakota 20) with the big brother Oregon 550t. The Oregon had a bigger screen, a camera and pre-installed TOPO-maps of Norway (but not the "good"/high quality TOPO-maps I wanted). Also, on paper it had about 4 hours less battery life. Even though the sceen was bigger, I found that the Dakota 20 was easier to read in direct sunlight (seems to be a problem withe the Oregon-series). So, all-in-all, I chose the Dakota because of the better screen (not bigger), much longer battery life, and that it was smaller (not taking to much space), and it was easy to use even with my big hands. Since I had to buy maps that fitted my needs (better ones than fitted on the Oregon, the price became almost the same. I didn't need the camere on the Oregon since I almost always bring a better camera on hikes (I just record the position).
BATTERY LIFE
Great! This unit uses AA batteries (two). Extremely practical since you can get them pretty much anywhere. It runs on alkalines, NiMH rechargeables and lithium AA batteries. My 2800 NiMH has made it last around 21 hours. This is important if you are planning longer trips. I would never have chosen a GPS that only worked on special lithium batteries. Please read my extra added comment regarding NiMH battery chargers so you can get the best performance out of them.
Ok, that was all I could think of when reviewing this little GPS unit. Hope it was useful.
EDIT:
When I mentioned that I had/have gotten 21 hours out of it from two 2700 mAh batteries, I forgot to mention that was in power-save use. Short backlight time, low backlight settings, compass off, often used without the backlight on at all. If I use the unit with high backlight on, for longer time, the battery life is much lower.
19 of 19 found the following review helpful:
Dakota 20 Visibility Feb 21, 2010
By Just Ducky
When I purchased the Dakota 20 I was somewhat concerned about using it on a bicycle because of mixed reviews (here and elsewhere) on its visibility during the day in various sunny and cloudy conditions. My first bike ride with the Dakota 20 confirmed the visibility problems, especially when not in direct sunlight. Visibility was especially a problem when the sun was on either the right or left side. When the sun is in front I twisted the Dakota until it was horizontal on the handlebars and this worked fine.
Then I decided to test ride the Dakota with sunglasses (polarized clip-ons), thinking if visibility got worse, then I would diffently return the Dakota. I was pleasantly surprized. The Polarized sunglasses greatly improved visibility in all angles of the sun. The reduction in glare from the polarized sunglasses greatly improve the contrast on the Dakota screen. The screen was not brighter, just more distinctively clearer. I repeated the test ride with polarized sunglasses on and off to confirm their effectiveness in improving the screen visibility in all angles of the sun.
The backlight on the Dakota is only effective at night or inside, not in daylight or even in shade.
One note, I loaded the Dakota with Garmin's City Navigator for the test rides. This software map has a white background with varying colored streets and markers. I did not test Topo mapping software on a bike. It may have different results even with polarized sunglasses, but I don't intend to add it to the unit.
Bottomline: I'm keeping the Dakota 20. I like the ease of using the touch screen and many of the other features, including the possibility of adding a heart rate monitor and cadance option. I just wanted to mention the use of polarized sunglasses (either green or brown)to improve visibility, because nowhere, in any of the reviews that have I read, has anyone identified this solution to the visibility issue.
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