Skip Navigation

DeLorme Earthmate® GPS PN-40

Handheld GPS navigator with 3-axis electric compass

3 Reviews

Item # 093PN40

This item is no longer available.

Shop all Fitness Watches & Golf GPS


Our take on the DeLorme Earthmate® GPS PN-40

The DeLorme Earthmate GPS PN-40 handheld navigator offers a wide array of navigation features to enhance your explorations over trails, roads, or waterways. This compact, waterproof navigator's highly sensitive 32-channel GPS receiver locks onto satellites quickly, while its lightning-fast processor redraws maps and images with your every move. The built-in electronic compass and barometric altimeter give this handheld an edge out in the field.

Check outDelorme's interactive demo for more info on the PN-40.

The DeLorme Earthmate GPS PN-40 handheld navigator offers a wide array of navigation features to enhance your explorations over trails, roads, or waterways. This compact, waterproof navigator's highly sensitive 32-channel GPS receiver locks onto satellites quickly, while its lightning-fast processor redraws maps and images with your every move. The built-in electronic compass and barometric altimeter give this handheld an edge out in the field.

Plenty of memory for maps and more
The PN-40 includes a preloaded worldwide highway and major road basemap, including U.S. secondary and connector roads, plus a whopping 500 megabytes of user-available internal flash memory. It also comes with DeLorme's most recent Topo USA software DVD which features full, updated U.S. topographic and street maps, plus 4 million points of interest. The included 1GB SD™ memory card and card reader make it easy to transfer the maps you want to the PN-40 before you hit the trail.

You can add maps with supplemental SD memory cards or downloads from the DeLorme Map Library, giving you access to updated USGS 7.5-minute quad maps, nautical charts, color satellite imagery, and black-and-white and color aerial images. The navigator's memory card slot is contained inside its waterproof battery compartment, protecting your additional maps from loss or damage.

Detail-rich display
You can check out all the stunning visuals the GPS PN-40 has to offer on its 2.2" TFT display. It shows you full U.S. topo and street maps, a worldwide basemap, and U.S. regional routable highways for road trips. You can switch among maps and imagery types to view the same GPS location, for a comprehensive view of where you are. The navigator's tough, sensitive control buttons provide convenient operation and reliable performance.

Features for exceptional guidance
The Earthmate GPS PN-40's 3-axis electronic compass with included accelerometer helps you keep your bearings when held in any position — while in motion or standing still. The built-in barometric altimeter provides reliably accurate altitude readings, making it ideal for geocaching and hiking expeditions.

You can store up to 10 tracks, 1,000 custom waypoints, and 50 routes on the PN-40. Its simple interface makes it easy to upload data to and from your computer, and to share your info with others via Topo USA. Built-in almanac listings tell you when the sun and moon rise and set, and keep you filled in on local tide schedules and hunting and fishing information. DeLorme includes two "AA" batteries needed for operation.

Product Highlights:

  • handheld GPS navigator for use outdoors, in a car, or on a boat
  • 2.2" TFT color display (220 x 176 pixels)
  • Topo USA 8.0 DVD software with U.S. topographic maps and regional routable highway/major roads maps
  • 1GB SD™ memory card and memory card reader
  • USB cable, lanyard, and 2 AA batteries included
  • WAAS (Wide Area Augmentation System) capability improves GPS accuracy to within 3 meters
  • 500MB user-available embedded memory
  • dual-core processor
  • 3-axis electronic compass with accelerometer
  • barometric altimeter
  • preloaded highway-level worldwide basemap
  • holds up to 10 tracks (10,000 points per track)
  • holds up to 1,000 user-defined waypoints
  • holds up to 50 routes
  • SD™ card slot (supports up to 32GB) allows for storage of optional DeLorme Map Library maps and images
  • displays aerial, nautical, satellite, and topo images and maps from DeLorme Map Library
  • 360° raster rotation provides accurate directional representation of your surroundings
  • almanac info with tides schedule, sunrise/sunset times, and best fishing/hunting times
  • IPX-7 waterproof design (can withstand accidental immersion in one meter of water for up to 30 minutes)
  • 14 hours typical use on two "AA" batteries
  • 2-1/2"W x 5-5/16"H x 1-9/16"D
  • weight: 5.12 oz.
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • Orange/black Earthmate PN-40 handheld GPS receiver
  • Neck lanyard
  • 80" USB Data transfer cable (with Type A USB connector on one end and a proprietary connector on the other end)
  • 1GB SD Memory card (in plastic case)
  • 2 "AA" alkaline batteries
  • Topo USA DVD-ROM in jewel case
  • 3 Topo USA Detailed Maps for PN-40 (East Region/Central Region/West Region)
  • User Manual
  • Quick Start Guide
  • Card regarding downloading large map packages

DeLorme Earthmate® GPS PN-40 Reviews

Average Customer Review(s):

(3 Reviews)

Not for common use

Flyfisher from Madison, MS on 7/31/2010

I purchased my PN40 about one year ago. The learning curve was 5 times greater than I expected and history has now proven it is/was not worth the jump for me. My usage is backpacking, hunting, fishing, trip navigation. I do not do the geo-cache thing. Battery life is short. DC Power cord use causes the unit to "lock up". Screen is smaller than other brands with same capabilities. Downloadable maps are a joke - to time consuming. Why not just have an option to download a county or a state at one time.



totally awesome technology

JB1 from Newcastle, CA on 1/24/2010

Crutchfield Customer Review (What's this?)

I'm a serious Jeeper. I hang out w/ the Cal4WD Club, Friends of the Rubicon and of course The Pirates of pirate4x4. The unit came in on time, fired up immediately and I downloaded the topos of the West. I really like the ergonomic design of the unit and the color screen. Just got back from wheelin in The Sierra @ the Lower Fordyce Trail in 10' of snow w/ 24 other rigs. The unit worked flawlessly and I am a VERY happy customer. This unit is a must if U do the crazy things I do and go places that most people are scared...rightly go. Heading 2 Moab, UT over Easter weekend 2 meet up w/ several thousand other Jeepers. Already have the GPS co-ordinates of a very cool, quiet place to back my JK Rubicon 2 camp during the madness.




Bob from Pinconning, MI on 8/16/2009

Crutchfield Customer Review (What's this?)

This gps is awesome, Crutchfield has been very helpfull in my ordering and fast in the shipment of my pn-40. The reviews I have read online are pretty much right on the money, except for the battery part. My batteries have lastest for some time. Plus this pn-40 is layed out alot like the Garmin I used to have. Makes me wonder if Garmin and DeLorme might be sharing technology. You will have to play with it for awhile to figure out all it can do, but that is the fun of it. Downloading maps is alittle tricky, but it is worth it. Once you get it you will love the maps. Get the DeLorme PN-40. It is awesome and so is Crutchfield. Thanks to the people at Crutchfield.




Hands-on research

Product Research



Overview: The DeLorme Earthmate PN-40 is a versatile hand-held GPS unit that is ideally suited for hiking, biking, boating, hunting, fishing, and geocaching. It features a bright, 2.2" daylight-readable color screen. The PN-40 includes topographic, street, and satellite maps, plus nautical charts, to give you accurate detail as you navigate. It comes with a 1 GB SD Memory card for quickly loading additional map data to your device.

Waterproof Design: The PN-40 conforms to IPX-7 waterproof standards with an impact-resistant rubberized housing for a solid grip.

GPS Receiver: The PN-40 is equipped with a new, high-sensitivity, extremely fast 32-channel GPS Chipset with a dual core processor for fast map redraws when panning or zooming. The STMicroelectronics Cartesio chip technology and DeLorme firmware give you faster acquisition times and ConstantLock for outstanding satellite signal retention. The PN-40 is WAAS enabled to give you accuracy within 3 meters. It also employs a proprietary Kalman filter for enhanced GPS accuracy.

Color LCD Display: The unit offers a 2.2" Sharp (brand) color TFT (220 x 176 pixels) backlit LCD display. The display's backlight comes on whenever a button is pressed. You can set the backlight intensity incrementally between 100% (max) and 10% (min).

Power Requirements: The unit comes with two "AA" batteries. The unit can operate on alkaline, Lithium, NiCd, or NiMH batteries. An optional PN-series power kit comes with a rechargeable Lithium-Ion battery, along with an AC wall charger and a 12-volt in-vehicle charger. The Device Setup page allows you to indicate the type of batteries being used.

Internal Flash Memory: The PN-40 stores waypoints, tracks, routes, and the basemap data in its internal memory. An additional 500MB of internal memory is available for transferring and saving maps in the unit. The PN-40 can hold up to 10 tracks with up to 10,000 points per track, and up to 1000 user-defined waypoints and up to 50 routes.

SD Card Slot: The unit features an SD Card slot inside the battery compartment to load additional detailed maps. The PN-40 supports high-capacity SDHC cards up to 32 GB; a 1 GB SD card is included, but adding a larger SD card allows more map storage.

Built-in SD Card Reader: The PN-40 supports fast USB 2.0 data transfer to the internal memory or directly to an inserted SD card. For large map packages (over 350MB), using an external SD card reader with your PC would be a faster download. It takes about 10 minutes to transfer a 350MB map to a card loaded in the unit, but it takes about 2 minutes using an SD card reader.

Included Maps: The Earthmate PN-40 comes with the full version of the newly-released Topo USA 8.0. The included DeLorme Topo USA 8.0 DVD software gives you full, updated U.S. topographic and street maps to export as needed to the PN-40. You can transfer many types of data to the unit, including satellite imagery, aerial imagery, USGS Topo Quad maps, and NOAA nautical charts. The unit has a pre-loaded world basemap that includes major highways as well as secondary and connector roads in the U.S.

Sensors: The unit is equipped with a 3-axis electronic compass with an accelerometer which allows it to work in virtually any position, while in motion or standing still. It also has a sensitive barometric altimeter to give you reliable, accurate altitude readings.

Map Orientation: The PN-40 features a two-dimensional on-screen map that can be set to one of three orientations.

  • North Up: North is always represented at the top of the map screen.
  • Heading Up: The direction in which you are traveling is always represented at the top of the map screen. The North arrow is shown in the upper right corner.
  • Course Up: The direction of the finish of your route is always represented at the top of the map screen. The North arrow is shown in the upper right corner when navigating.

Find Button: You can use the Find button (indicated by a magnifying glass) to search for addresses, roads, cities, points of interest, waypoints, coordinates, and more. You can search for a destination near the map center or by the location's name.

Mark Button: The Mark button (indicated by a push pin) lets you mark a waypoint at your current GPS location, or if you're panning the map, at the cursor position. The waypoint is saved to allow you to navigate to it at a later time.

Geocaching: Geocaching is a popular hide-and-seek sport for GPS users. The PN-40 allows you to locate and navigate to a desired cache, as well as marking the location of a cache you may hide.

Almanac: The PN-40 has a Sun/Moon page which allows you to view sunrise/sunset and moonrise/moonset/moon phase information for your current GPS location. You can also see high and low tide information based on a specific time, date, and tide station. For sportsmen, you can view a prediction of the type of day it will be, and the best times to hunt or fish.



  • Receiver: Super high-sensitivity 32 channel Cartesio chipset by STMicroelectronics; WAAS-enabled
  • Acquisition Time:
    • < 60 seconds (cold start)
    • < 45 seconds (warm start)
    • < 5-6 seconds (hot start)
  • Update Rate: 1 second, continuous
  • Maximum Velocity: 1000 knots
  • GPS Accuracy:
    • Position: < 15 meters, 95% typical
    • Velocity: 0.05 meter/sec steady state
  • WAAS Accuracy: < 3 meters, 95% typical
  • Weak Signal Tracking: down to -159dBm
  • Weight: 5.35 ounces

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.