[Antennaware] Cubical Quad antenna model for VOACAP

Bill Tippett btippett at alum.mit.edu
Sun May 14 16:26:37 EDT 2006

K2XX wrote:

 >I have recently modeled a two element 30/40M quad on a 20' boom
(0.205 and 0.142 lambda respectively) and got free space gains of
7.4-7.5 dBi.  My design criteria were maximum gain and a reasonable
match to 100 ohms.  How much gain are you observing for two and three
element Yagis?

         Scroll down to "Quad vs. Yagi - Free Space Gain"
about midway down this page:


red = 2 el Quad
green = 2 el Yagi
blue = 3 el Yagi

A 3 el Yagi actually has slightly higher average
gain than a 2 el Quad over wide bandwidths.  Shades
of the "Quad vs Yagi" arguments of the 70's!


My last post on a topic which just won't die!

                                         73,  Bill  W4ZV

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