I agree re turning on Airplane mode as my 3G iPhone stopped receiving any GPS signal when I tried this option.
15 minutes for acquisition is far too long compared to up to a couple of minutes for my Garmin dedicated GPS and my HP iPaq Travel Companion with built in Tom Tom. I will let you know how I go when hiking in the forest assuming I return safely!! The plan is to walk from Pemberton the 55km to Northcliffe over the weekend when it will only be a few degrees cooler there than in Perth. Eeek! Cheers Tim On 11/1/10 1:45 PM, "Rod Blitvich" <rb...@iinet.net.au> wrote: > Thanks Tim > I have GPS Lite. > Let me know how you go. > > It's all confusing - GPS or Assisted GPS utilizing phone towers. > The FAQs for GPS seem to suggest that you can still use the ap out of phone > coverage, but it may take up to 15 mins to acquire satellite signal: > I also read that you can't simulate this by turning Airplane Mode on, because > it not only block phone reception but also GPS reception. > > "The 3G and 3GS iPhone uses an A-GPS (Assisted-GPS) chipset which uses cell > tower triangulation to speed up GPS signal acquisition. Cellular coverage is > not needed to acquire a signal, however the signal acquisition will be much > quicker if you have data coverage. Without data services, it can take 15 > minutes or longer to acquire a signal. This is simply because it takes longer > to determine which satellites to use out of the 31 available around the world. > With data services, it typically takes under a minute, but can take up to 5 > min. You do need data services or WiFi if you want to share your > waypoints/tracks via email or view a waypoint in Google Maps." > > cheers > Rod > On 11/01/2010, at 7:22 AM, Tim Law wrote: > >> Hello Rod, >> >> I cannot help you with that particular app, but I have just purchased GPS by >> MotionX which I intend to play with in Pemberton next weekend. I don¹t have >> Optus coverage in Pemberton or out on the tracks, so I have downloaded some >> of their own maps that are stored on the iPhone and I will see if the app >> works as it should away from wifi and mobile signals. It allowed me to upload >> some waypoints I created too, which is handy. >> >> Why this might be relevant to you, is that your app may either store the >> worldwide calculations and data in the iPhone and use the inbuilt GPS to >> produce viewable data no matter where you are, OR, it may cache them once you >> have gone looking at the area from afar and whilst in network range allowing >> you to re-view it later. Either way, it does appear these apps are useful >> away from normal coverage. >> >> Tim >> >> >> On 10/1/10 9:34 AM, "Rod Blitvich" <rb...@iinet.net.au> wrote: >> >>> >>> http://itunes.apple.com/au/app/marine-australia/id306693075?mt=8 >>> >>> Gidday WAMUGers >>> Navonics Marine Australia is an ap on the itunes store. >>> It seems to suggest it will work WITHOUT phone coverage. >>> eg i could use it to determine tides and mark spots, get coordinates etc in >>> faraway places like north/south of Broome whilst outside of phone coverage. >>> Is this possible or have I misinterpreted?? >>> Thanks for your advice >>> cheers >>> Blitto >>> >>> >>> >>> <image.gif> >>> Rod Blitvich - Amy & Sam¹s Dad >>> . . . . . . . . . . . . . . . . . . . . . . . . . . >>> 0409 681 256 >>> rb...@iinet.net.au <x-msg://181/rb...@iinet.net.au> >>> http://web.me.com/blitto <http://web.mac.com/blitto> >>> >>> I haven't lost my mind...... >>> .......it's backed up on disk somewhere! >>> >>> >>> >>> >>> >>> -- The WA Macintosh User Group Mailing List -- >>> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> >>> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> >>> Unsubscribe - <mailto:wamug-unsubscr...@wamug.org.au> >>> >> >> >> >> >> >> -- The WA Macintosh User Group Mailing List -- >> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> >> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> >> Unsubscribe - <mailto:wamug-unsubscr...@wamug.org.au> > > > > Rod Blitvich - Amy & Sam¹s Dad > . . . . . . . . . . . . . . . . . . . . . . . . . . > 0409 681 256 > rb...@iinet.net.au > http://web.me.com/blitto <http://web.mac.com/blitto> > > The day Microsoft makes something that doesn't suck > is probably the day they start making vacuum cleaners > > > > > > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Unsubscribe - <mailto:wamug-unsubscr...@wamug.org.au> > -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Unsubscribe - <mailto:wamug-unsubscr...@wamug.org.au>
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