What potable gps to order tonight

Bumpyroad wrote:

SCVJeff wrote:


So what's the difference?

OLYLEN answered your question.
bumpy

Because you couldn't?

So now we are talking about a literal difference in feet while driving at 60MPH so you can grasp at a few straws?

One more time.... It is EXACTLY the same database, lane assist, and display. They are the SAME company doing the same thing, I suggest both of you do a little homework.

As far as trusting GLONASS... Really? You don't think the Russians can't point missles as accurate as we can? I have seen A-B comparisons of an iPhone with and without GLONASS enabled in and around city streets in San Francisco and the error correction is amazing. That same test also used a Garmin NUVI as the benchmark and it was no better than the iPhone sans GLONASS, and since Garmin no longer allows you to switch WASS Off, it was obviously On. WHY?... Do either of you even realize that the WASS system is only 3 additional satellites flying around? All 3 are geo-sync, meaning you need a view of the southern belt, exactly as one does with DSS. And you expect 100% accuracy on your GPS dash mounted in the car with a completely occluded view of the sky straight up, and now let's add city buildings and trees? Good luck. For those who don't know WASS, that system was designed for and commissioned by the FAA to assist aircraft that fly with external antennas in open sky, not someone in a car shadowed by the car itself at best.

Do I work for Apple? That snipe isn't worth the response, but one of my work hats is precision location of TV and Microwave towers for licensing and registration purposes to the FCC AND FAA all over the country, and for that I often use the iPhone and my NUVI because, in the OPEN sky they are never more than 1/10 sec off, as good as my old professional Trimble that I don't even bother with anymore. Wanna put this to bed now?