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DeLorme software on Android or Windows 8 devices
DrAlloway
Quote:
Originally Posted by DrAlloway
Thanks again.

The market for Win 8 on tablets (and small laptops that convert into tablets) is new
and rapidly changing -- so I am going to keep investigating while they work the bugs out.

However, I have to buy and integrate components in March as I have a 1,500 mile motorcycle trip starting April 3 which would be a great time to test my systems integration.
I have a Tank Bag (sits on top of gas tank) with a clear map pouch into which a 10 inch tablet will fit. So it is locked in place and I can see the screen.

You are right about visibility in direct sun but - hopefully - voice turn-by-turn will compensate.
DrAlloway
Is there any place that lists accuracy by GPS chip-set ??
Even better by model of GPS receiver
Best by tablet mfg & model ??
tcassidy
Not that I know of. Unless you are expecting to be in difficult mountainous terrain with lots of tight valleys or high density cities with tall buildings, any GPS chip set should do the job just fine. It is the difficult situations where the S4 and MTK II chips really show their stuff. I expect on a bike trip that any one device can do the job you need. They are all way better than years ago!

Terry
DrAlloway
So I don't need the best chipset made - that is good to know.

I suspect the GPS chipsets in tablets are far from the best
do you think they are good enough for navigating back roads in the middle of nowhere ??
tcassidy
The quality of the GPS is not the determing factor in success on back roads. Unless, as stated before, you expect to be in tight canyons where the view of satellites is limited. What is really important is the accuracy of the mapping software you use in those areas!!

Terry
malaki86
I recently bought a Samsung Galaxy Tab 2 tablet. I'm running CoPilot on it for my navigation. I drive some very tight 2 lane roads in WV & VA and have yet to have it drop a GPS lock. Some of the canyons are literally 2 lanes wide, plus a small stream, with steep walls on both sides, covered with trees. In those areas, I do drop my XM signal.

Just thought I'd weigh in.
tcassidy
That's good to know Malaki. There seems to be a dearth of information of the performance of internal GPS in devices and how they compare to external ones these days. I wonder if it is using a common chipset.

Terry
malaki86
The only thing I see for the specs on the GPS is "A-GPS".

I have the tablet mounted in a holder on the dash of the truck. But, I've had it in my basement bathroom (center of my house) and it kept a full GPS signal.
tcassidy
If I understand it correctly, A-GPS refers to the ability of the device to use cell tower triangulation to assist in GPS accuracy. You would have to have the cellular service activated and nearby service to use this though. This could be a problem in remote and mountainous terrain.

Terry
DrAlloway
It is my understanding that A-GPS is just a cell tower faster assist on First location acquisition but provides no help thereafter.
malaki86
My tablet is a wifi-only version - it doesn't have the cellular "functions".

http://en.wikipedia.org/wiki/Assisted_GPS

You're correct on the cellular part of it, though. Strange.
tcassidy
That is good to know Malaki. So, the GPS is sensitive enough to work in a difficult location without the cellular assist.

Terry
tcassidy
I believe there was some confusing advertising that came out with standalone GPS devices about the time cellular assist a-gps was introduced. From what I saw AGPS was just a method of getting a faster initialization by using an ephemeris table from the internet.

True assited gps uses traingulation of known cell tower locations to give an accurate location to the device. I assume the cell towers broadcast there location as it is certainly fixed. If 3 or more were available it would provide a very detailed fix.

Terry
DrAlloway
BTW:: I have been trying to find Tablets with GPS built-in
and it is very difficult to figure out, even on the mfg websites

Trick that works:: search for 3G Tablets.
Turns out the chipset that does 3G also does GPS
You still have to dig deep to get confirmation - but the odds are in your favor.
tcassidy
Sort of silly paying extra for 3g (cellular) if you aren't planning on using it though. It usually costs as much as a standalone BT GPS.

Terry
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