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<p>[QUOTE=&quot;Fid, post: 427512, member: 7724&quot;]here in Europe we call those circles around a centerpoint zones. they have a certain radius, here they increase by a quarter mile and the enclosed area becomes bigger.</p><p>when you look in google maps you&#039;ll see that the center point lies on the university campus.</p><p>so, it could be for the signal strentgh of an antenna for mobile phones or a campus radio station.</p><p>or it could be showing the different danger zones when a nuclear&nbsp; or chemical incident happens in the center of the circle to help police where to intervene first.[/QUOTE]</p><p><br /></p>

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