[TowerTalk] Need help ref. spacing elements, 2 el 20 m wire beam

Rick Stealey rstealey at hotmail.com
Fri Oct 9 17:02:16 PDT 2009


Steve,
It looks to me like this will give you 10.5 dbi gain, 14 db f/b at an angle above the horizon of 30 degrees.  Using #12 wire.  

reflector length - 10.6 meter
driven ele length - 10.0 m
spacing 3.5 meter

F/b is best at 14.2.  If you want to work at 14.05 make the reflector 10.7

Gain is flat across the band.

But if you want more gain, with no f/b consider a lazy H.

Rick  k2XT


 		 	   		  
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