Navigating with an iPhone? - Page 2 - SailNet Community
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post #11 of 43 Old 11-24-2008
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Pictures the commies doing a "TRAINING EXERCIZE" off the coast of VEN>>>>

They move north and suddenly your GPS systems are not accurate anymore...This cant happen.........

OPSY,,, they are off the coast of SA now....grins....
Takes a moon sight and is content he knows where he is......

Mark
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post #12 of 43 Old 11-24-2008
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Laurie, my wife, has an Iphone and the chart program, very impressive. We have checked it against our Garmin 3210 and Sitex chartplotters and it's right on the money. Great back up for suburban sailing within cell range, and you can't beat the price if you already have the phone. John

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post #13 of 43 Old 11-24-2008
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While I don't use an iPhone, I DO use my smartphone for navigation. I have a Palm Treo 650, external bluetooth receiver, and Pathaway

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post #14 of 43 Old 11-24-2008
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Quote:
Originally Posted by jrd22 View Post
Laurie, my wife, has an Iphone and the chart program, very impressive. We have checked it against our Garmin 3210 and Sitex chartplotters and it's right on the money. Great back up for suburban sailing within cell range, and you can't beat the price if you already have the phone. John
Anyone used it away from the puddle? How far out can you get and still have the GPS functionality? I'm never quite sure whether "No Service" means "Yer Skrewed".
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post #15 of 43 Old 11-25-2008
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Anyone used it away from the puddle? How far out can you get and still have the GPS functionality? I'm never quite sure whether "No Service" means "Yer Skrewed".

Well, the "G" in "GPS" does mean Global. The iPhone has a GPS receiver in it so it should be able to receive a GPS signal anywhere in the world regardless of whether you have cell signal.

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post #16 of 43 Old 11-25-2008
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Actually, the iPhone 3G has a built-in GPS chip, the iPhone does not. Big difference.

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Well, the "G" in "GPS" does mean Global. The iPhone has a GPS receiver in it so it should be able to receive a GPS signal anywhere in the world regardless of whether you have cell signal.

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post #17 of 43 Old 11-25-2008
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Sorry SD, I assumed that's what we were discussing for just that reason. Any mention of GPS IMPLIES the iPhone 3G since it's the only version to date to have an integrated GPS receiver. Granted it is possible to use an external GPS receiver but since that has not been mentioned in the thread I think it's safe to conclude that the OP isn't using an external unit.

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post #18 of 43 Old 11-25-2008
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Smack- Maybe your question has already been answered above, I assumed you would need cell coverage but as long as you had the correct charts downloaded beforehand maybe it's not necessary. I'll ask the technologically advanced member of the crew (it's her phone, I don't know how you are supposed to use something that only has one button ) Yep, she says it'll work anywhere as long as you already have the charts.

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post #19 of 43 Old 11-25-2008
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Dog, dude, get with the program. Of course we're talking about the 3G. It's like you get distracted by shiny objects or something. But at least you screw up with complete confidence. That's something.

And CK - thanks for helping me with the G. I was really puzzled. Of course, you did nothing to answer the actual question. Focus, man, focus!

Maybe Paul (the OP) is the only one who knows anything about this. You know, from experience. And now he's quiet. Go figure. Well at least I have you guys to help me achieve certain death through your sound, well-informed advice.

Jrd - thanks for checking with the expert. Then I presume this means that the charts are fully local (i.e. - downloaded to the phone)? And do not need satellite or cell access to work?

I'm still a bit leery simply because I've had spotty to no reception (GPS and/or cell) in some remote areas on the iPhone. So I'm just wondering about the actual limitations.
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post #20 of 43 Old 11-25-2008
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Smack. Technically I did answer part of it. The GPS receiver in the phone will work WITHOUT cell signal. I did overlook the chart issue however. I always download my charts to my smartphone so that part didn't cross my mind.

Anyway, looks like you got a definitive answer for all points in question.

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