
The Earthmate PN-40 is a high-sensitivity, high-performance, bright-color-screen handheld GPS that offers an unrivaled selection of display options including up-to-date DeLorme Topo USA topographic maps, color aerial imagery, USGS 7.5-min. topographic quad maps, and NOAA nautical charts.
![]() The Earthmate PN-40 is a high-sensitivity, high-performance, bright-color-screen handheld GPS that offers an unrivaled selection of display options. Click to enlarge. |
With its 32-channel STMicroelectronics Cartesio chipset and DeLorme ConstantLock technology, the PN-40 acquires satellite signals quickly and retains them in the most challenging GPS environments. Map and imagery displays are lightning-quick thanks to a powerful dual-core processor.
A three-axis electronic compass can be used with the PN-40 held in any position, while a barometric altimeter provides reliable altitude readings. The on-board base map includes major highways and thoroughfares worldwide plus secondary and connector roads in the U.S. Detailed U.S. street and topo maps can be selected from the included Topo USA software.
The PN-40 holds up to 1,000 user-defined waypoints, 50 routes, and 10 tracks. All can be easily received from or sent to the included Topo USA software. The device displays both road and trail routes automatically generated using Topo USA. Road routes and direct (point-to-point) routes also can be generated on the PN-40.
Available onboard Flash memory totals 500 MB and the PN-40 also supports high-capacity SD cards (SDHC) up to 32 GB. The 65K-color daylight-readable TFT screen provides clarity in any light conditions including direct sunlight. The PN-40 is WAAS-enabled, waterproof to IPX-7 standards, comes in a rugged, impact-resistant rubberized case, and weighs just over five oz.
A Complete Out-of-the-box Solution:
Unlike other GPS receivers that require additional map data purchases, the PN-40 comes with up-to-date DeLorme Topo USA mapping software in the package. This is the full version of Topo USA, with all its desktop and GPS capabilities included. Also in the package: East, Central, and West regional DVDs with detailed U.S. street and topo maps by state or region; a 1-GB SD card--ideal for large map and imagery transfers; a detailed user manual, a Quick Start Guide, and two AA batteries. A $40 certificate is included for downloading sample supplementary datasets and then a new $29.95 Map Library annual subscription plan is offered for unlimited data downloads.
![]() The serious GPS alternative. |
Serious Performance
- New--Blazing-fast, high-sensitivity 32-channel STMicroelectronics Cartesio chipset
- New--Dual-core processor for instantaneous map and satellite imagery redraws, even with large aerial imagery files and multiple maps layers
- 360¡ raster rotation sets the PN-40 apart from other common GPS handhelds. With 360¡ rotation road, building, and other images really are on your left or right as you look at the map and walk, bike or drive
- New--3-axis electronic compass with included accelorometer performs when held in any positionÑwhile in motion or standing still
- New--Sensitive barometric altimeter for reliably accurate altitude readings
- WAAS-enabled for accuracy within 3 meters
- New--Now supports SDHC high-capacity SD cards (up to 32 GB) for fast and direct map transfer from the included maps discs
Serious Maps
- Included. Comes with three discs containing detailed hybrid topographic and street maps of the entire USA. You do not need anything else to hike, geocache, or navigate the backcountry. It's all in the box.
- Also Included: Sample Certificate. A $40 certificate is included for downloading sample supplementary datasets. Take a "test drive" with any of the supplementary datasets DeLorme offers: high-resolution aerial imagery, USGS 7.5-Minute Quad Map, NOAA Nautical Charts, and more..
- And for Only $29.95! Then, once you're convinced, subscribe to the NEW DeLorme Map Library for only $29.95 per year. Get all the USGS Quads, NOAA nautical charts and high-resolution color aerial imagery to layer WITH your topo and street maps for only $29.95! No hidden charges.
Serious Tough
- The PN-40 is waterproof to the IEC 529 IPX7 standard
- Designed to function in high-humidity environments, including consistent humidity levels over 90%, and in the rain
- The PN-40 has been rigorously tested to function in high-vibration conditions such as off-road driving
- Operating temperature range for the PN-40 is -20 degrees C to +75 degrees C. The PN-40 should function in extreme cold as well as rapidly-changing temperature environments
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What's in the Box
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Serious Value
- No one else offers COMPLETE U.S. hybrid, routable Topographic and Street maps WITH your initial purchase
- In addition, for the extremely low price of $29.95 annually, subscribe to the DeLorme Map Library of downloads for all the USGS 7.5-minute Quads, NOAA nautical charts, and Hi-Resolution Aerial Imagery you want. All downloads are accessed through the convenient NetLink tab of your DeLorme software
Serious Quality, Service & Support
And as if the PN-40, Included Topo and Detailed Street Map and the huge values of the MapLibrary Subscription were not enough, you get serious DeLorme quality:- Renowned DeLorme-Quality Maps
- Quality Geospatial Engineering
- Quality Hardware Engineering
- Quality U.S.-Based Customer Service
- Quality U.S.-Based Technical Support and Open Online GPS User Forms
What Else Should I Know?
High-Performance Technology
Features STMicroelectronics Cartesio chipset and updated DeLorme firmware for amazing signal acquisition and retention, map scrolling and redraw--even with multiple layers of imagery, topo and street maps.
Complete Detailed U.S. Street and Topographic Maps Included with ALL PN-40 Purchases |
![]() Click for U.S. Street & Topographic Map samples. |
![]() Click for World Base Reference Map samples. |
![]() Click for USGS 7.5-Minute Quad Map samples. |
![]() Click for NOAA Nautical Chart samples. |
![]() Click for Color Aerial Imagery samples. |
![]() Click for Color Satellite Imagery samples. |
![]() Click for DOQQ Aerial Imagery samples. |
Multiple Views of the Same GPS Location
On-device data layering lets you select which map or imagery type to see of your GPS location. Switch among data types to gain a comprehensive view of where you are--it's revolutionary and provides a whole new level of geographic detail.
Bright Color Screen
Works in bright sunlight to total darkness. Sharp¨ brand screen featuring the latest transflective screen technologies to maximize visibility under a variety of lighting conditions.
Rugged and Waterproof
Conforms to IPX-7 waterproof standard with impact-resistant rubberized housing for a solid grip. Concealed battery compartment with SD card slot. Includes two AA batteries.
Easy Exchange of Maps, Tracks, and Waypoints
Exchange routes, tracks and waypoints between the GPS and Topo USA (two-way transfers).
Extensive On-Device Memory
1-GB of internal flash memory available in addition to the pre-loaded world base map. Holds up to ten tracks (10,000 points per track); 1,000 user-defined waypoints; and 50 routes. SD slot also available.
Don't Forget--Complete Detailed U.S. Street and Topographic Maps Included with ALL PN-40 Purchases
Detailed U.S. Street & Topographic Maps
- Cut & transfer custom map packages of the exact coverage you want
- Detailed vector-based maps created from the USGS topographic data & the latest DeLorme U.S. street & trail network
- U.S. land cover including bodies of water, wetlands, forests, mountains, glaciers, grasslands, rock cover & more
- Contour lines with elevation numbers
- Fully routable when combined with the corresponding Regional Highway map
- By default, saved map packages include data zoom levels 8-17 (which translates to a scale of 4 miles through 40 ft). Saved maps display all roads, land cover, and contours
The DeLorme World Base Reference Map
- Preloaded on the Earthmate GPS PN series
- High-level map includes country borders, highways & major roads
- Displays interstates and major highways at scales of 500 miles to 8 miles
- Created by DeLorme's staff of professional cartographers
Sample Map Library Downloads
Each purchase comes with a Certificate for $40 worth of FREE Supplementary Data Downloads
Use Your FREE Supplementary Data Certificate, or a Map Library Subscription for Any of These Map and Imagery Types:
USGS 7.5-Minute Quad Maps
- Download through the Topo USA NetLink tab--Use your FREE Data Download Dollars
- Transfer from Topo USA to your PN-40, as needed
- The authentic scanned USGS 7.5-minute paper quad maps
- Show roads, trails, buildings, large natural landmarks & other unique features
NOAA Nautical Charts
- The complete set of U.S. waterway available, including the Great Lakes, Alaska, and Hawaii
- Include numerous aids to navigation, water depths, water body names, hazards, and more
- Great for taking along on boating trips, island explorations, and trips ashore
High-Resolution Color Aerial Imagery
- Available for many U.S. States and select U.S. Cities
- Detailed, color, aerial imagery
- Provide a unique aerial perspective, ideal in off-the-beaten-path environments
- Show roads, trails, buildings, large natural landmarks & other unique features
Sat-10 Color Satellite Imagery
- 10-meter colorized satellite imagery for viewing large geographic areas
- Provides high-level views of vegetation, topography, and large, visible geologic formations on the Earth's surface
- Natural color satellite imagery derived from merging SPOT 10m panchromatic & Landsat 30m multi-spectral scenes
B&W DOQQ (Digital Orthoquads) Aerial Imagery
- Detailed, black & white, aerial imagery
- Provide a unique aerial perspective, ideal in off-the-beaten-path environments
- View logging & 4WD roads, bodies of water, and other natural features from above
Earthmate GPS PN-40 Screen Images
USGS 7.5-min. Quads Wide-ranging USGS quad detail ![]() Geocaching ![]() Hiking in the White Mountains ![]() |
Color Aerial Imagery Following a Route to a Geocache ![]() Navigating a Route on Water ![]() On-the-job usage ![]() |
Color City Imagery Jefferson Memorial ![]() Jacobs Field, Cleveland ![]() Space Needle, Seattle ![]() |
Topo USA Hunting and Fishing ![]() Mountain Bike Trails ![]() Places of Interest ![]() |
Hybrids Imagery, Contours, Detail Cell Tower Location ![]() Pleasant Mountain Summit ![]() Glacier National Park ![]() |
Functions Barometric Altimeter ![]() Electronic Compass ![]() Trip Information ![]() |
Sun/Moon ![]() Tides ![]() Hunting/Fishing ![]() |
Data Layering ![]() Satellite Acquisition ![]() Driving Directions ![]() |
Readmore! DeLorme Earthmate PN-40 Handheld GPS (1:100k Topographic, Detailed Street Maps & POIs Included)
Technical Details
- 32-channel STMicroelectronics Cartesio chipset; dual-core processor for blazing-fast performance- 500 MB of available onboard Flash memory; support for high-capacity SD cards (SDHC) up to 32 GB
- 3-axis electronic compass; Barometric altimeter
- More detailed onboard base map data for the U.S., now with secondary and connector roads, along with major highways
- Fast USB 2.0 data transfers to in-device SD card--no external card reader required
See more: technical details

By Guillermo Hernandez (Kentucky)
I've had the Delorme PN-40 for about two months and have had no trouble with it. The unit acquires signal quickly, compared to my Magellan Meridian Gold. The color display is clear albeit smaller than I would like.
Where the value comes in is with the included street maps. The maps alone are worth the price of the unit. As far as I know Delorme is the only manufacturer that includes street maps with their device.
The $30 yearly subscription is a nice option. Frankly it's not necessary unless you want the quads, hi-res, etc, maps. But come on, for $30 take the plunge and start downloading. It's nice to have the additional maps if needed, especially if spending time in the back country.
I did find a small inconvenience when driving on the freeway. I downloaded quads and the DOQQ (b&w) maps and had them active on the GPS. At times there was a substantial delay when the screen would refresh. I don't use this GPS as a road navigation unit so it's not a big deal but it would be nice to have faster updates when traveling down the road at 60mph.
The battery life could be better and I had a small hiccup when installing Topo8 on a Vista machine. I quickly found a solution on Delorme's site and was able to install the app so it wasn't a big deal.
All in all this is a great GPS. Small, great display, fantastic value on map options. Could it be better? sure. Longer battery life and a bigger display would be nice. But in my opinion those two items do not distract from the value and quality of the unit.

By Kenneth Branch (Merritt Island Fl)
As a technical and computer savvy individual I expected to be able to overcome the poor user manual and complicated non-intuitive interface for loading data and maps. Was I wrong!
Something as simple as paying for and downloading a USGS quad segment proved impossible. Tried with both PN-40 connected to computer and not. I can pay for and receive download to my hard drive, but downloaded file cannot be transferred to PN-40 or SD card.
Attempts to repurchase and download with PN-40 connected always fail near the end of download. December 9, 2009 advice on their forum is a messy procedure to delete failed download from their list, buy a new download, and try again. Other downloads will not work until the failed one is removed from their list. Manual and help manuals ignore any of this
This does not work and no support over the weekend, so cannot use the unit for my trip. I would advise potential users to buy a more user friendly unit until they improve documentation to a minimal acceptable level
Early in my career I wrote user manuals for a living. Tech writers working for DeLorme should be terrified for their job.

By C. Tiller
I bought this unit to couple with my IPhone, now I have the ultimate 1-2 punch. I have found 100% of my caches since I bought PN-40. I got a great deal only $199. The PN-40 gets me anywhere between 1-7 feet, come on you just can't beat that. If you can't find the cache with those numbers you are looking up the wrong tree"hey is that a cache!" I'm sorry, just crazy hooked on Geocaching and always looking(smile). Why this unit did not get a 5 stars was due to the battery consumption. The PN-40 EATS regular alkaline batteries for breakfast, lunch and dinner! Excellent unit a must buy! Happy Geocaching!!
PS: I have only used this unit in the winter with temperatures at 30 degrees and below hanging on the outside exposed to the snow and winds around my neck and it has never failed, tuff little bright orange cookie!

By Gary (Georgia USA)
Minor complaint is batteries don't last long. Buy rechargeables. Major complaint is Topo Maps are complicated, for me anyway. But I bought this for geocaching only. For that purpose it is extremely accurate. Off by only 7-10 feet which is excellent. Mine was $199. Great deal !

By Brian J. Timmons
Unit is great. Accurate, easy to use. But the free maps were difficult to access.
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Buy DeLorme Earthmate PN-40 Handheld GPS (1:100k Topographic, Detailed Street Maps & POIs Included) Now! Save BIG!!
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