If you are looking where to get the Tripmate and the software (Street Atlas USA), you can click on here and go direct to Delorme sales.

I have replaced the Tripmate with a Garmin GPS II unit and placed it on the dash.  It displays the bearing, speed, ETA, Trip, Distance, and more all the time.  I also use an external antenna that help keep constant contact with the satellites.  When I wish, I also hook up my laptop using Street Atlas USA for constantly updated map of where I am at.

As of  Nov. 26, 1997,  I have just got the Garmin GPS III with built in maps (only the major roads) and a very nice display over the GPS II. Lots of new nice features.  Cost was about $350 from the local boat shop, list is $519. (After I have used it for a few weeks, I will post my findings)
 
The Garmin GPS II is powered from the 12 volts of the truck, but can also be powered by 4 AA batteries.  This unit when I got it cost me about $240, the power/data cord was about $40, and a mobile mounting bracket was about $30.  The mobile mounting bracket is nice to have since you can angle the display where it is best for you.  A few of the down points of this GPS unit  are:  Back lighting is not bright enough for night time viewing compared to the other dash light.  From time to time it will get a weak signal and stops working. It's does not attempt to make a fix on the satellites again unless I turn the unit off and back on again, then I got to turn the back lighting if I am using it at night.  Normally getting the fix only take about 1 minute or less, but you got to keep an eye on it.  It does not provide any alarm output, which would be nice to let you know where you are getting close to your landmark (like an exit).

I also have a Magellan Trailblazer that I sometime use but I normally keep it in my other truck.  It too can be hooked up to my laptop, but Street Atlas USA does not support something in the Trail Blazer unit. So I normally will use Map Expert 2.0 (that is also by Delorme & is older software that they are not planning on updating) that requires some linking software to work with the GPS data.  The Magellan was my first GPS unit, and  to me has a more user friendly menu.  Display is not as good as their cheaper units like the 2000,3000, or the 4000, and like the Garmin has a dull back lighting system when being used along with your dash lights.  The mounting was really made for a boat, and not seem to go to well in the Hummer (my option).  This unit does have a nice large display and is easier to read on the road during normal daylight driving.  Good thing it runs on 12 volts, cause it will only run 4 hours on a set of 3 AA batteries. Also does provide an alarm output.
 

	Here is a photo of the Garmin GPS III in the mobile mounting bracket mounted to the dash.  Works out great here.
	Here is the notebook computer that I use for the mapping software. It is Velcroed to the dash on one side and to the clove box on the other side. Easy to remove and re-install into place when needed.  Even on the ruffest trails, the notebook never budges from it's place. Even the cup holders still works, well, the right one does anyway, left one, no.
	And as you can see, easy to read.  Some of the few features of the GPS III that I do not like are:  Does not retain last settings, on/off, back light setting on or off, no alarm output, or audio signaling.

Note for Topo 2 installing on HD