REFLECTOR: ipad

Mon Jun 17 12:45:28 CDT 2013

I agree.  The cellular radio is not needed to obtain GPS position.  My 
point is that the iPads that have cellular radios also have true GPS 
receivers.  It is not to say that the GPS receiver and the cellular 
radio are one and the same.  It's just that if you buy an iPad that has 
Wi-Fi only (without a cellular radio) you also will not have a true GPS 
receiver and thus you will not be able to use it to navigate in an 
airplane.  I can guarantee you that when you navigated from CA to TX 
using your iPad that the GPS radio was turned on and functioning 
regardless of whether the cellular radio was acquiring a signal or not.  
If a person with a Wi-Fi only iPad were to try the same thing it would 
not work because their iPad does not contain a GPS receiver.

You mentioned that you "think a wireless iPad without cell radio will 
navigate fine" but then you said that you "drove my V on my iPhone with 
no cell signal...with no bars on the cellular radio". So, if your iPad 
*does* have a cell radio then how do you know that an iPad without a 
cell radio will navigate fine?

Dave Philipsen
Velocity STD FG
N83DP

On 6/17/2013 11:08 AM, Mark Magee wrote:
> Dave,
> This is weird (data), I understand triangulation on cell towers, yet a 
> GPS radio does not have to have this to know where it is. As I 
> understood it, cell phones -without- a GPS radio can nonetheless know 
> where they are (eg. for a 911 call) via cell tower triangulation. In 
> other words a cell phone without a GPS can nonetheless serve as a 
> navigation interface for Google Maps and simars. I think a wireless 
> iPad without cell radio will navigate fine, I drove my V on my iPhone 
> with no cell signal on Navigation Pro from CA to Texas with no bars on 
> the cellular radio.
>
>
> Mark B. Magee
> N34XL
> Sent from IPhone 4S
> 1COR 16:13-14
>
> On Jun 17, 2013, at 10:18 AM, Dave Philipsen <velocity at davebiz.com 
> <mailto:velocity at davebiz.com>> wrote:
>
>> I use the internal GPS on mine and it works just fine.  As someone 
>> mentioned earlier on this thread only the iPads with the cellular 
>> radio have true GPS.  The wifi only iPads use wifi to interpolate 
>> your position and obviously wouldn't work on an airplane.
>> Dave Philipsen
>> Velocity STD FG
>> N83DP
>> On 6/17/2013 9:03 AM, Dave T Nelson wrote:
>>>
>>> Slight twist on this topic -
>>>
>>> I'm a very happy Foreflight user... I use it on my ipad 1 and ipad 3 
>>> versions... using only the internal GPS.  I've never had an external 
>>> GPS, and it seems to work fine (and yes, I do use it IFR).  Am I the 
>>> only person able to reliably use the internal GPS?
>>>
>>> It unlocks once in a great, great while... basically near enough to 
>>> never that it's not an issue.  And, since I don't use it as anything 
>>> even close to my primary navigation reference (esp. for IFR), it's 
>>> just never an issue when it does.
>>>
>>> What is your experience?
>>>
>>> Thanks,
>>>
>>> Dave
>>>
>>> Dave T. Nelson
>>> T/L 553-4327, Voice 507-253-4327, Fax 507-253-3648
>>> Program Director, ISC ECAT NPI & Test Engineering
>>>
>>>
>>>     ----- Message from Don Johnston <numa at comcast.net> on Mon, 17
>>>     Jun 2013 08:17:48 -0500 -----
>>>     *To:*
>>>     	
>>>         Velocity Aircraft Owners and Builders list <reflector at tvbf.org> 
>>>     *Subject:*
>>>     	
>>>         Re: REFLECTOR: ipad 
>>>
>>> I had Anywhere map years ago. It was okay but I didn't stick with 
>>> it. Then again, this was before touch screens and the stylus 
>>> approach was not a good entry tool in turbulence.  I got an iPad 
>>> right after they came out. Been running Foreflight ever since. 
>>>  Looked at the others but still like Foreflight.
>>>
>>> If you didn't get a wireless version and you want a moving map, 
>>> *you'll need an external GPS*. I have the GNS5870 but there are 
>>> others. The pro version of Foreflight has georeferenced approach 
>>> plates. I got the GPS almost for free so I decided to get the pro 
>>> version of Foreflight for a year to try it.  I decided to keep the 
>>> pro version. You can't have too much situational awareness, right?  :-)
>>>
>>> For weather, I'm still using my 396 with XM. I prefer the resolution 
>>> of the radar and the number of products of XM over the ADS weather.
>>>
>>>
>>> _______________________________________________
>>> To change your email address, visithttp://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery!www.tvbf.org/gallery
>>> user:pw = tvbf:jamaicangoose
>>> Check new archives:www.tvbf.org/pipermail
>>> Check old archives:http://www.tvbf.org/archives/velocity/maillist.html
>>
>> _______________________________________________
>> To change your email address, visit 
>> http://www.tvbf.org/mailman/listinfo/reflector
>>
>> Visit the gallery! www.tvbf.org/gallery <http://www.tvbf.org/gallery>
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail 
>> <http://www.tvbf.org/pipermail>
>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>
>
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery!  www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.tvbf.org/mailman/private/reflector/attachments/20130617/45b52320/attachment.html>