[BC] KOMO Towers

[Tom Osenkowsky]

Spacing, specified in electrical degrees, refers to the spacing from an imaginary point in space or anothr tower. For example, if I had two towers spaced 100 degrees oriented East-West, tower #1 could be specified with an orientation and spacing of 0 degrees with tower #2 oriented 270 degrees with a spacing of 100 degrees. In this case, tower #1 is th reference tower to which #2 is compared to.
 
Tower #1 could be specified with a spacing of 50 degrees with an orientation of 90 degrees (East) and tower #2 spaced 50 degrees oriented 270 degrees (West). In this case, the space reference point is midway between the towers. The are an infinite number of ways to specify spacing and orientation. In the FCC computr programs ther is a Reference Switch. When set, the spacing and orientation is referred to the previous tower. Whenever you see a tower with zero degrees spacing and orientation, all other towers are compared to that tower. If all towers have a spacing an orientation, they are referring to an imaginary point in space. It is simple x,y coordinate trig. The z plane is the height of the tower. One must be careful that a 0 degree orientation may be North if it has a spacing value.
 
The unequal tower heights may be so to afford azimuth/elevation angle protection for night operation (skywave minima/null). A close examination of the arary and protections would be necessary.
Tom Osenkowsky, CPBE