On Fri, 17 Feb 2017 17:12:20 -0800, Jeff Liebermann wrote:

As for the tower antenna patterns being direction, it's a matter of
what you consider directional. In the typical 3 sided tower
configuration, the sector antennas have a horizontal beamwidth of
about 60 degrees. The tower can and does indicate which sector is
being used, but that has a granularity of 120 degrees, which is hardly
accurate enough to determine anyones position.

Hi Jeff,

This article describes the three 120-degree sectors:
Alpha is the North FACING vertical antenna on the cell tower
Beta is the Southeast FACING vertical antenna on the cell tower
Gamma is the Southwest FACING vertical antenna on the cell tower
http://www.evdoforums.com/thread15374.html

There is a way to tell which sector antenna you're connected to from the
cell id. Also, the newer Android APIs now seem to expose the frequency
bands:
http://people.csail.mit.edu/bkph/cel...r_inside.shtml