Datus has given us the following comment as of May 4, 2000.  This is a result of the financial problems at Daewoo(Korea),  Datus' parent company.   "At this time, it does not appear likely that production of the DATUS PNA will resume... "

Mobile Technology Sales, Inc.   was a DATUS distributor and  is  providing ongoing service and support for the DATUS ROUTEFINDER.   They can be reached at 1-925-513-4797

DATUS Personal Navigation Assistant GPS System
Product Review revision 3 (12/23/99)
by Joe Mehaffey and Jack Yeazel
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The Datus Routefinder Personal Navigation Assistant  (PNA) is a new kind of handheld GPS navigator.  Functionally,  it is more similar to the Magellan PathMaster (now 750NAV) or to the Alpine automobile navigation system than it is to a "standard" GPS receiver.  It is designed specifically for automobile navigation and it does this job EXTREMELY well.  It is NOT suited for hiking or marine use.  The DATUS PNA is the first HANDHELD portable vehicle navigation system with automatic address-to-address route calculation, turn-by-turn voice instructions and with a built in GPS receiver.  PNA uses an external amplified antenna module and does not contain a built in antenna.  Joe and Jack consider the Datus PNA a "breakthrough" product in the category of handheld GPS automobile navigation technology.

What's Different about the PNA?
Having a  Datus PNA with you is a lot like having a human co-pilot in the right hand car seat with a map book and total familiarity with your travel area.  To use the PNA,  you enter a destination city and a destination street address (or two cross streets) and enter "GO".  In half a minute or so,  the DATUS PNA will begin VOICE GUIDANCE INSTRUCTIONS.  Unlike the Delorme SA7 and SkyMap 2000,  the available audio level from the PNA's built in speaker was more than adequate in a noisy car at 70 mph.  In about 500 miles of travel with the PNA,  we found it to give extremely good directions and best of all TIMELY and clear directions.  We found that it was totally unnecessary to refer to the PNA's built in maps for navigation help.  The voice instructions are all that is needed to get you from address to address efficiently.  If you wish to deviate from your set route for a period,  you press a few keys and PNA recomputes your new route.

Map Accuracy
The maps in Datus PNA appear (in the Atlanta area) to be the most accurate digital maps we have seen.  So far,  we have found zero errors in the road maps excepting in areas built or changed within the last year.  (That is not to say that there may not be a few!)  The one way streets,  expressway ramps,  are all in the right place and pointing in the right direction as far as our checks determined.  This was a major contributor to the smoothness of operation we felt when driving in "tricky" road areas.  Often,  PNA would take us one way going in and another way coming back to take advantage of one way streets.  At a glance,  you might infer that Datus Maps provide street level detail in all areas of its map coverage.  Unfortunately,  this is not true.  Basically it covers "large cities and metropolitan areas" with extraordinarily detailed maps.  Then many areas OUTSIDE these "large cities and metro areas" have just state and federal roads and highways and the better known local arteries.  Be sure to carefully review the map coverage data HERE for details.  For instance,  in the Atlanta area,  Cherokee  and Hall Counties have no detailed  coverage despite officially being in the Atlanta Metro Area  <When the coverage is there,  it is excellent.  When it is missing,  you will need your map book.>

How does PNA work?
The user enters an address  easily using the familiar telephone style keypad.  PNA knows there are multiple letters per key and when it figures out cities (and street address names) which are matches for your input,  it presents a list and then you scroll down the list to your exact name.   (ATLA is enought for Atlanta,  DAWS gets you Dawsonville, etc.)  This works very well indeed.   After you enter the destination address (with or without house number),  the PNA automatically calculates the best route to your destination, then speaks turn-by-turn directions automatically as you approach each turn.  Amazingly,  we found that in a local complex expressway ramp configuration (locally known as spagetti junction),  PNA guided us unerringly to the correct ramps by NAME on the ramp sign.  (We were IMPRESSED!)

The PNA also includes a built-in directory with over 40 categories of Places To Go such as gas stations, ATMs, restaurants, hotels, tourist attractions, civic centers, sports arenas and more.  We found the restaurant category reasonably accurate.  The SHOPPING category failed to display major shopping malls.   We did not check other categories extensively.   Datus allows you to maintain a personal address book and phone book with over 1000+ names.  Then you can select a destination address from these listings.   Also included is a calendar and four function calculator.

PNA runs on a 486 cpu platform  using WinCE.  Map memory is a PCMCIA memory card with 64,  85, or 128 megabytes of memory storage optional.  Our 85 meg system allowed us to load detailed street maps and "places to go" information for North and South Carolina,  Georgia,  Florida and Alabama in a single load.  The USA is divided up into nine different geographical areas.    According to Datus (division of Daewoo),  " the PNA uses detailed road maps designed specifically for street navigation. These maps contain  the  critical routing information such as one-way streets, median strips, turn restrictions and connectivity to freeway on-ramps and off-ramps necessary for accurate routing".  With the PNA, (according to Datus)  "you will never be routed the wrong way on a one-way street, directed to turn left across a median strip or directed to exit a freeway where no off ramp exists."  We found this to be the case in the Atlanta area and PNA often chooses a different return path to optimize the use of one way streets.  We were extremely impressed at the overall quality of the routes provided.  There were a few "anomalies" in a small number of routes and these are discussed below.

Datus tells us that a WIRELESS communications capability is planned for 2000 which will provide the PNA with traffic information to facilitate rerouting in metro areas equipped with this capability.  A PCMCIA RF modem will be able to link into the wireless data services provided by one of several digital data common carriers.  No price for this addition is currently available.

What are the Routing Options?
To enter a destination address, you press the [New Route] key on the keypad to display this screen.  PNA then provides four options from which to select a destination address - Last Routes, Places To Go, Address Book, or Enter Address.   Multiple destination routes are available for situations where it is desired to make a "round robin" tour with multiple stops.  Once a route is set up,  it can be saved for reuse.  This system seems ideal for use by a company needing to teach a new driver a delivery route to follow.

What we didn't like about Datus PNA.
1)  Although Datus PNA routed us beautifully most of the time,  we found it equated all US highways the same in choosing a route.  This caused it to sometimes choose slow and heavily traveled US 9 in our area when a freeway (US 19) was the highly preferable route.   You can force the issue by driving on US 19 and "re-route"  but there is no ability for a user to provide preference information on specific roads.
2)  We found that "occasionally" Datus would route us through a shorter but heavily traveled "surface street" area rather than a slightly longer but much faster freeway route.  We think that the "fastest" selection should place higher emphasis on freeway routing.
3) Datus PNA requires that you enter a destination address or cross street as a destination.  (You can also use the Points-of-Interest destinations).  It is not currently possible to "point" on the PNA's high detail map and have that point become your destination.
4) Some words pronounced by PNA are difficult to understand.  However,  you quickly get used to the computer generated dialect.
5) It took a lot of work,  but we did find one BUG.  Consider a triangle of roads.  If you are driving down road A where road A crosses roads B and C,  then if your destination is on road C,  Datus PNA will always turn you onto road B,  take you over to road C and then to your destination on road C.  This even if just driving down road A to road C would be shorter/quicker.  Hopefully Datus will correct this minor problem quickly.


Even with the few "warts",  we found the Datus PNA the most satisfying automatic navigation system we have used.   Datus has told us that most of our observed "don't like" items are on their list of items to correct in a future software update.

The VOICE DIRECTIONS are excellent and provide timely and adequate directions in virtually every situation we came across.   In fact,  the voice directions were of such quality that we found it totally unnecessary to refer to the PNA's map display page.   This makes the PNA much safer to use that systems which require reference to moving map displays.  While the $1300 price tag is high,  it is about half the price of the built in models and its portability allows it to be used in multiple vehicles.

Datus provides a detailed feature summary including screen photographs,  and details of feature operation on their website at:  http://www.datusinc.com

Please feel free to send us your comments,  and any corrections or additions.

Joe Mehaffey