DeLorme Earthmate PN-20 Waterproof Hiking GPS Review

Average Reviews:

(More customer reviews)The Topo 6.0 maps that come with this unit contain surprisingly detailed topographic information. Most popular hiking trails are included. You can preview them at (you need to create a free account)...
data.delorme.com
The PN-20's main rivals are the Garmin units. The Garmin mapping software can be previewed by following the appropriate links here...
www8.garmin.com/cartography
These topographic maps are generally inferior to those of the Delorme unit (you can discover this for yourself by accessing the websites above). The PN-20 nicely superimposes street and topographic/hiking info into the one map which I don't believe the Garmin units do. The mapping software is included free with the purchase of the PN-20. You have to pay an additional amount of more than $200 for both topo and street maps with the Garmin units. One drawback of the PN-20 mapping software is that is highly user UNfriendly. Also, if you want to cut a large map section (say of the entire state of California, with all contour information included), it will take your computer many, many hours. It is possible however to download all street information, from interstate freeways down to tiny alleys, for an entire state, without contour information, in an hour or so. On the plus side, once you master it, the mapping software can be very powerful.
The screen is full-color as opposed to the Garmin models which only display 256 colors. The PN-20 can display aerial, satellite and usgs topo quad images that you download for $0.25 per square kilometer. The unit comes with a free voucher for $100 of image downloads (400 sq. kilometers). This can be a very useful feature for hiking, as many unnamed trails and paths are visible from the air, and hence appear in the aerial photographs. One warning, if you have poor eyesight you might have difficulty reading the small type on the screen.
The signal reception is good. It works inside a car and under moderately dense canopy. Under very dense canopy it will loose the signal. The initial lock can take a few minutes, depending on how far you have moved since the device last registered a location. I haven't used the Garmin units but my guess is that the PN-20's signal reception is significantly better than the Etrex's but not quite up there with the 60cx's, which apparently acquires an initial lock within a few seconds. I've found the typical accuracy the device settles down to is roughly +/-50ft under some canopy, +/-30ft if you're driving down a suburban street, and +/- 10ft if you're on a freeway.
The battery life is good, ~8 hours with moderate use and medium backlight.
Auto-routing functionality is built in, but limited. If you want the unit to direct you from address A to address B you have to use the Topo 6.0 software on your computer, to create the route and then upload it onto the device. The procedure is fast and straightforward once you learn how to do it. The software enables you to create via and stop points for your route, which can be useful. You can also calculate road-routes by clicking on start and end points on the map (ie without entering addresses). Once you enable auto-navigation, below the map will be displayed the distance and expected time to next turn, the name of the street or exit, and an arrow indicating the direction to turn. It will beep twice for each turn, once to alert you in advance, and a second time to indicate when the actual turn should take place. All in all I found the auto-navigation feature was quite effective, though not as user-friendly as a purpose built auto-GPS such as the Garmin Street-Pilot. Perhaps the biggest downside to using this device for auto-navigation is that you have to wait a minute or two after switching it on for an initial-lock.
One general drawback is the slow processor. Map redraws can take up to 30 seconds depending on what information is being loaded, though typically they take 5-10 seconds. At times it can be frustrating, though for conventional use the delay is tolerable.
Another drawback is the street maps are a tad crude. For example, a curved street will appear as a couple of straight lines joined together. Also, some sections of the street maps are misaligned by more than 100ft. These are typically streets in suburban (non-metropolitan) areas but it can occasionally be frustrating, particularly when driving, as the unit can display your position as in between two roads. I believe the Delorme Street-Atlas maps don't have this problem, but they are not compatible with the PN-20 yet (apparently Delorme is working on a patch to make them compatible).
All in all, the ability to display aerial photography and accurate hiking information makes this a break-through device, though the slow processor detracts a little from the novelty.

Click Here to see more reviews about: DeLorme Earthmate PN-20 Waterproof Hiking GPS

Includes Topo USA 8.0DVD mapping software with full U.S. topographic and street maps, plus aerial imagery

Click here for more information about DeLorme Earthmate PN-20 Waterproof Hiking GPS

Read More...

TOPO National Geographic USGS Topographic Maps (Minnesota and Iowa) Review

Average Reviews:

(More customer reviews)UPDATE 1/1/08: I just got a Mac after always previously using Windows. Great news--when I installed this 4.0 software, not only did it work fine, but it also corrected the two most serious objections I previously had with it. I now have no problems importing waypoints from my Garmin GPSmap 60CSx, and the software is now compatible with all the states I own from the previous Version 3 software. I don't know whether this is unique to Mac or whether it now works just as well with Windows, but when I did the installation, it automatically went to the National Geographic web site and downloaded a software update. I still give it 4 stars because of some of the other non-standard user interface choices, but these are easy enough to get used to. I didn't change the rest of the review, so keep this update in mind as you read it.
National Geographic topo maps are great if your understand their strengths and limitations (I have the Nevada version but they all work the same). First, don't expect to import the actual maps into a GPS receiver. These maps are raster-scanned directly from USGS 7.5' topos; GPS receivers use vector-graphic maps that are only available from your receiver's manufacturer (and they are much less detailed than NG maps). But you should never expect your GPS receiver's display to completely replace a paper map anyway. It's too small to show much detail, and if your receiver fails, you'd be out of luck. NOTE: Magellan has just introduced the Triton series, which is the first product designed to import maps from Topo!. This is a great advancement, but I haven't yet evaluated it to see how well it works.
Since these are based on USGS maps, they have the same high quality including tons of detail, but since many USGS maps are more than 10 years old, you won't necessarily get up-to-date information. Since topographic features don't ordinarily change as frequently as man-made features, you're usually OK, but keep this in mind.
These maps allow you do a lot of other things with your GPS. You can create waypoints on the computer, either by placing a marker on the map or by entering in the latitudes and longitudes of your points, then transferring them to the GPS. This is much easier than manually entering the info through your GPS user interface. You can also download tracks from your GPS receiver onto the map to see where you've been. And you can draw intended journeys directly on the map screen, then measure the distance and elevation profile of the route. The elevation profile is a bit noisy, but you get a pretty good idea of how much elevation change you'll experience on a hike. The tool you use to draw the route on the screen could benefit from an improved user interface, but with a little practice you can get pretty good at it. If you make a mistake, hold down the right mouse button to erase the error. One thing I like is that you can print out a custom paper map, and if you print using your inkjet on NG's waterproof paper, you can get a custom color map that really is waterproof. This latest edition is designed to work with USB receivers like the Garmin GPSMap 60-series. This is a tremendous advantage compared to the previous edition. BUT please note that it isn't completely compatible with the new GPSMap60CSx. It doesn't import waypoint names properly, they end up being simple numbers starting at 001. For some reason this isn't a problem with the older GPSMap60Cs.
The main objection I have is that it isn't easily compatible with the previous edition. In my case, I had the prior edition for California, and expected the California CDs to work with the new software. But for some reason they don't. So I have to leave the old edition installed for the California maps and the new one for Nevada maps. Fortunately I can use the USB capability of the Nevada software to download the California waypoints and tracks from my 60CSx. I then have to save the .tpo file, launch the old edition software and pull up the California map, then import the .tpo file. Very inconvenient, but at least there is a way to make it work. I guess they would prefer I buy a new edition of the California maps.
The only other thing to note is that they still haven't completely adopted Windows user interface conventions. For example, there are no scroll bars on the side and bottom of the map to allow you to move the map on your screen. You have to move your cursor to the edge of the map, watch for the cursor to change to an arrow, and hold down the mouse button. The direction of scroll depends on exactly where on the screen your cursor is. Another observation is that there is no EDIT menu, so I can't easily cut and paste data into other applications. But these are relatively small concerns that you can quickly adapt to. All in all this is a very valuable tool that I highly recommend.

Click Here to see more reviews about: TOPO National Geographic USGS Topographic Maps (Minnesota and Iowa)

TOPO! harnesses the power of authentic USGS topographic maps in an intuitive software product that recreation enthusiasts and professionals use to customize and print photo-quality topographic maps. TOPO! includes five levels of seamless mapping, including USA maps from the National Geographic World Atlas, USGS 1:100,000 scale mapping - perfect for back road navigation - and USGS 1:24,000 scale maps, also known as 7.5 minute quads. Users can custom-center the map in any location, add their routes, trails and notes. In addition, users can transfer waypoints and routes between TOPO! and their GPS units. TOPO! includes added content and features not on USGS maps: updated streets and roads, shaded relief, 3D views and fly-throughs and elevation profiles. Users can download map and software updates, and can print waterproof maps on their inkjet printers with Adventure Paper. The USA Placefinder locates more than a million places and natural features.

Get 3% OFF

Click here for more information about TOPO National Geographic USGS Topographic Maps (Minnesota and Iowa)

Read More...