[TowerTalk] 7 el 40m LP wire beam information

K. Balmforth kbalmforth@compuall.com
Fri, 12 Dec 1997 22:56:50 -0800


Received a couple of inquiries for data on the 7 el 40m LP wire beam we
have been using for FD (N6AW 3A).  The original article is in Ham Radio,
April 1980, pages 26-40, by W4AEO and W6PYK.

Here is the data (dimensions in ft):

Element	Length 	Spacing
1	69.6 	0.0		(Reflector end)
2	66.0	25.2
3	62.7	23.9
4	59.6	22.7
5	56.6	21.6
6	53.7	20.5
7	51.0	19.5		(Director end)

Open wire feedpoint starts at element 7.  All elements are connected
with open wire feedline, which is reversed between adjacent elements.

73, Kevin N6ER

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