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Your Lost or Hurt - What is Your Latitude and Longitude?

post #1 of 10
Thread Starter 

How many of you have a smartphone and know how to find your current Latitude and Longitude to text to friends when you have a weak signal? 

 

If you don't know how to find your Latitude & Longitude you may want to figure out how you do that on you smartphone before heading into the mountains or out on open water.

 

With an iPhone its easy. Just bring up the COMPASS application that comes on every iPhone and it displays Latitude & Longitude.  The COMPASS application may be found in your UTILITIES folder.  Practice using COMPASS application.  Note COMPASS has to be enabled for GPS under settings.

 

If you have an Android smartphone well lets just say you may need to download an application that shows Latitude & Longitude.;)

 

Yes most 911 dispatcher centers have the capability to find your location after a minute making a voice call to 911.  In cases of weak signal text message to friends may be your best option.

 

NOTE:

AT&T, Sprint, T-Mobile, and Verizon have voluntarily committed to provide text-to-911 service by May 15, 2014 in all areas served by their networks where a 911 call center is prepared to receive texts.  Note not all 911 centers will be prepared to receive texts on that date. 


Edited by catskills - 12/27/13 at 2:14pm
post #2 of 10

it depends on your android version but it's even easier, especially if you can get network access.

 

If you know you need to text out your location: 
You bring up messaging, and just click the paperclip and choose share location from the equally ubiquitous on android google maps.  It'll bring up the map, locks onto gps, you hit OK for your location (or have it search for somewhere else), then it'll prepare the text with a google map link that you can also just see the long/lat in the URL it sends.

 

Alternatively, starting from maps, longpress anywhere on the map and it'll place a pin, then press the section below for that pin, and it'll bring up share icon and choose from all your other applications that know how to "share" an URL (email, messaging, social network apps, etc).

 

If you don't have internet access, then yes, download one of the many gps apps like "Gps test".


Edited by raytseng - 12/27/13 at 12:41pm
post #3 of 10

Edited post that was not accurate. Checked my Iphone 5s, where I did not have compass enabled. When this was enabled Latitude and Longitude do appear.


Edited by Living Proof - 12/27/13 at 1:02pm
post #4 of 10
Thread Starter 
Quote:
Originally Posted by Living Proof View Post
 

Edited post that was not accurate. Checked my Iphone 5s, where I did not have compass enabled. When this was enabled Latitude and Longitude do appear.


Good point I updated my OP

post #5 of 10

Keep in mind these position fixes can be about 15m (50 feet) off: http://paulzandbergen.com/PUBLICATIONS_files/Zandbergen_TGIS_2009.pdf

 

FCC only requires accuracy for E911 to 50 m for 67% of calls and to 150 m for 95% of calls. 

post #6 of 10
Would that not be plenty accurate for calling in a search and rescue team? Seems it would be in most cases.
post #7 of 10
Quote:
Originally Posted by GorgeSkier View Post

Would that not be plenty accurate for calling in a search and rescue team? Seems it would be in most cases.

 

Probably so but accuracy can be worse in dense forest... something worth considering.

post #8 of 10

word of advice, if your lost never waste your limited battery life by calling friends. Call responders first.then stay off the phone other than in direct communication with them. Often that battery life is critical to locating you and hopefully will result in an actual rescue.    

post #9 of 10
Quote:
Originally Posted by spknmike View Post
 

 

Probably so but accuracy can be worse in dense forest... something worth considering.


Hmmm, interesting thought. Sometime I'll have to compare the iPhone (dependent on cell tower?) with my GPS (once locked on) while in the woods and see if the accuracy differs.

post #10 of 10
Quote:
Originally Posted by spknmike View Post
 

 

Probably so but accuracy can be worse in dense forest... something worth considering.

it's less about the forest but more about the mountains, both for gps and the cell. The signals bounce off the rocks but the triangulation algorithms can only assume straight-line signals.

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