[BC] WEEI towers

[Dan Strassberg]

Dana described the fading properties of the array of three tall towers at
what is now WEEI 850 in Boston.
-----
But as you have pointed out in previous posts, Dana, that array is inusual
in its use of towers of unequal height. Although CDBS says that all three
towers are 207 degrees, that is not the case. The spacing between each pair
is 120 degrees, and the one at one end of the line is the shortest of the
three, whereas the one at the other end is the tallest. But can't recall
whether the height increases or decreases as you go from west to east. Can
you enlighten us? I think Peter would insist that, once the decision to use
unequal heights had been made, the RIGHT way to design the array, whose
radiation minima are on the west side of the patterns, would have been to
place the tallest tower on the west side and the shortest one on the east.
Also, one of the towers (and again I can't recall which), is built with a
rather large removable section at the top that was intended to permit
top-mounting of an FM or TV antenna--something that was never done. IIRC,
the towers are approximately 600' high (which would be 186.7 degrees at 850,
but some greater number of electrical degrees because of the very wide face
dimension), with the shorter end tower being about 540' (168 degrees) and
the taller one being about 660' (205.4 degrees). I suspect that tower with
the removable top section is the tallest of the three, but the removable top
section might be on the middle tower, which is also the one with the middle
height.

--
Dan Strassberg, dan.strassberg at att.net
eFax 707-215-6367