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[aprssig] WiFi APRS traveler

Gregg Wonderly gregg at wonderly.org
Mon Dec 13 14:17:05 UTC 2010


On 12/11/2010 5:28 PM, Keith VE7GDH wrote:
> Arno PE1ICQ wrote...
>
>> I started PocketAPRS on my iPad and was curious which position it would
>> report. It placed me right smack in the middle of Minneapolis/St.Paul Airport.
>> Apparently that's were the gw IP-address was registered.
>
> I'm using OpenAPRS on an iPhone. The iPhone 4 actually has a
> GPS chip embedded in it. Still, a position based on where the IP
> is registered is still pretty good when you look at the big picture.

My cell modem comes out onto the internet in Dallas Texas.  When I am on the 
road with it, largely NOT in Texas, it is very confusing to push the "where am 
I" button on my wifi iPad and have it tell me "texas" and not anywhere close to 
where I actually am.

Gregg

> I believe the term is "assisted GPS". If it can see the sky, it gives an
> accurate position. If you are indoors, it comes up with a position based
> on where you are in relation to the cell sites. At the very least, it speeds
> up the initial position, and gets you close when the sky is completely
> obscured - as long as you can get a cell signal - but it has a real GPS
> chip embedded in it for when you can see the sky.
>
> http://en.wikipedia.org/wiki/Assisted_GPS
>
> 73 es cul - Keith VE7GDH
> --
> "I may be lost, but I know exactly where I am!"
>
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