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[TowerTalk] 80 Meter Simple Alternative to the 4Square

To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: [TowerTalk] 80 Meter Simple Alternative to the 4Square
From: floyd koontz <wa2wvlfk@hotmail.com>
Date: Mon, 5 Aug 2013 23:41:51 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
The SVA (Single Vertical Phased Array) can equal or exceed the performance of a 
4Square Array using only a single 39 foot aluminum mast. The front and back 
(top) guy wires, supporting the vertical, are driven with the correct amplitude 
and phase to produce a 3 element Endfire array  having more gain than a 4Square 
array. Only a single highpass network is required to drive the front element 
(no quadrature network) since the center element is parasitic and the back 
element is driven at zero degrees. As with a 4Square the front and back phases 
and amplitudes are reversed to reverse the pattern direction. With 4 top guys, 
patterns are produed in 4 directions

just like a 4Square.

 

With a lightweigh 39 foot vertical, hinged at the ground, a single person can 
raise or lower the array. The SVA has a very small wind load and is guyed with 
"String Trimmer Line" to wood posts

placed in the proper locations.  The SVA technique has application for 160 
meters using broadbanded short elements.  The full design of the SVA appears on 
my website www.WA2WVL.com.

 

Floyd   WA2WVL
                                          
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