well it is because they are not allowed to put cell towers / antenas in national parks > -----Original Message----- > From: gps-talkusers-bounce@xxxxxxxxxxxxx [mailto:gps-talkusers- > bounce@xxxxxxxxxxxxx] On Behalf Of Michael May > Sent: Saturday, July 24, 2010 18:39 > To: GPS-talkusers-freelists.org > Subject: [gps-talkusers] phone based GPS systems > > I have spent the past couple days in Yellowstone National Park, > mostly in Wyoming but spilling over into Montana. > > I doubt there are any cell towers in the park and I would guess the > state of Rhode Island would fit in this huge national park. It is > rare to drive for 3 hours anywhere and never get any cellular > service. This is what we experienced driving from Jackson Hole > Wyoming to Gardiner Montana through the park. > > Furthermore, there are lots of points that are not marked in this > area. All the geysers seem to be marked but not everything. I have > already added 60 points and have 3 more days of travel to mark many > more key points. > > With no cellular service, GPS systems like Wayfinder and Navigon > cannot function at all. I used my BrailleNote quite enjoyably the > whole time and the Garmin Nuvi kept my family members happy with > visual maps. We had 3 phone platforms between us, Android, Symbian > and iPhone. None of those were a bit of help. > > This is something to be aware of as we consider various on-line phone > GPS services. Without a connection, they are no use. > > Mike > > > > Michael G. May > > CEO Sendero Group > > Distributors and developers of Sendero GPS for 5 platforms, > BrailleNote, BrailleSense, Pac Mate, Windows PC and Mobile Geo for > Windows phones. Also, distributing Trekker Breeze, Victor Stream, > KNFB Mobile Reader, Talks, Mobile Speak, Miniguide and ID Mate. > > Crashing Through, a book about Mike May, by Robert Kurson, available > at http://www.CrashingThrough.com > > MikeMay@xxxxxxxxxxxxxxxx > http://www.SenderoGroup.com > > 1-530-757-6800, Fax (530) 757-6830, Mobile (530) 304-0007 > Sendero Group, LLC > 429 F Street, Davis, CA 95616, USA > > > To change your email settings (unsubscribe, digest only, or vacation > mode): > http://senderogroup.com/social_media/email.htm > > Additionally, to unsubscribe send an email to gps-talkusers- > request@xxxxxxxxxxxxx with "unsubscribe" in the Subject. To change your email settings (unsubscribe, digest only, or vacation mode): http://senderogroup.com/social_media/email.htm Additionally, to unsubscribe send an email to gps-talkusers-request@xxxxxxxxxxxxx with "unsubscribe" in the Subject.