[TowerTalk] FW: Antenna element diameter \ length calculation

[Paul Christensen]

The vertical height-to-diameter correction factor is discussed in Volume 2 
of the ARRL Antenna Compendium.  Getting a result first requires computing 
the height-to-diameter ratio -- which you already know.  The ratio is then 
plotted on a graph that shows a correction factor, "C. "   The result is 
applied to the equation:  Length = 246C/F.

Paul, W9AC

>
I am helping a friend with an 80 meter 4 square vertical.
Can someone tell me how to calculate the difference in length when 4"
aluminum pipe is used for the elements verses wire elements?


Thanks
Gary  K4FMX