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Re: [TowerTalk] Using an iPhone App to line up your antenna

To: <TOWERTALK@contesting.com>
Subject: Re: [TowerTalk] Using an iPhone App to line up your antenna
From: <john@kk9a.com>
Date: Thu, 5 Jan 2012 00:23:21 -0000
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Can you use this compass in the woods or do trees attenuate the earths 
magnetic field?


To: towertalk@contesting.com
Subject: Re: [TowerTalk] Using an iPhone App to line up your antenna
From: Jim Lux <jimlux@earthlink.net>
Date: Wed, 04 Jan 2012 15:45:10 -0800

3G doesn't have magnetic sensors
3GS does

There are compass apps for 3G that use GPS and velocity to infer heading. 

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