Global Position Systems
We have been using GPS coupled to our mapping systems for several years. We are currently down to three map programs, the Microsoft Streets & trips 2003, Delorme Street Atlas 2003 and Delorme version of AAA Map N Go, which is no longer available. We do have the Delorme GPS units (the Earthmate and Tripmate) which are probably the poorest excuse for a GPS I have come across. We use our Garmin with external antenna which has "NEVER" lost a signal. The Delorme units do frequently loose signals most often around large buildings, trees or anything that will block the signal. I do like the Delorme mapping product because of their spoken voice capability in giving directions. The MS program is a better program, but, no voice... Delorme is limited to the lower 48 states and Alaska. MS program works pretty much in North America, including Canada & Mexico.