[BC] KOMO Towers

[Tom Dimeo]

Again I'm going to show my lack of knowledge of AM 
directional arrays.  I was looking at the FCC antenna data 
for the night pattern of KOMO 1000 kHz in Seattle and wonder 
if someone would explain a bit about it to me.

I understand about the different tower heights, 185, 180 and 
170 degrees but I don't understand what the spacing and 
orientation information mean.

Spacing, 105, 10.5 and 105 degrees, does this mean that tower 
2 is only 10.5 degrees from tower 1?

Orientation, 10, 70 and 190 degrees, does this mean that 
tower 1 is at 10 degrees, very slightly east of north, and 
that tower 2 is in a line of 70 degrees from tower 1 and 
tower 3 is in a line of 190 degrees from tower 1?

And, if I can get another answer, is there a specific reason 
for the different tower heights?

Thanks,

Tom