On Thursday, May 15, 2014 1:52:15 PM UTC-7, wrote:
When you are circling in a 45 bank, the antennae are far from vertical and seem still to work....



mj

Yes but the signals is vertically polarized (vertical relative to the antenna) and your job as installer is to get the antennas as vertical as possible so that that average the signal transmission/reception is maximized.

Antenna design 101, they are linear/vertical polarized antennas, get the antennas as vertical as possible.