[TowerTalk] Really elementary question

[Pete Smith]

Somehow in my 49 years as a ham I've managed to avoid practical experience 
with phased arrays, but now I'm working on an array of K9AY loops for 160m 
receiving, and realize that I lack an essential piece of information.  A 
cruise through the antenna Book hasn't helped.

The question is this -- when a two-element array is specified as having one 
element 90 degrees from the other -- in modeling terms, antenna A's phase 
is zero and antenna B's is 90 -- does this mean that you feed antenna A and 
then connect from there to B through 90 degrees of coax (1/4 WL x velocity 
factor) or is it the other way around?  What about 0 and -90?  If the two 
antennas are supposed to be 180 out of phase can you connect them in either 
sequence, as long as the line between them is an electrical half-wave?  I'd 
think "yes" but I've grown wary of my intuition on such things.

73, Pete N4ZR
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