Calculateur antenne cubical moxon rectangle , hexabeam

02/03/2015 17:51

 

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Copyright © 1997 - 2004   -   John Tait  EI7BA   -   All rights reserved

 

 Hexagonal Beam

 in 3 hours..

 

 

 

( Rough drawing of beam construction )

 

 

 

 

 

 

 

 

 

Elements attached...HEX airborne at about 5ft high....!! Resonance all wrong...Swift recalculations...New formula is 520/f...Made the reflector 4% larger

 

 

 

 

 

 

 

 

And this is Brian 7Q7BP and Janet 7Q7YL's fine HEX atop their homebrew tower..
 What a beautiful QTH...!

 

 

 

 
Driven Element = 6180/Freq    
 468/f (wrong formula as it turned out...)
 I want to be sure that I have the formula correct 520/f is the driven
> element formula.  The Reflector is then made 4% larger than this.  Is
> that correct? 

 Reflector = 6262/Freq  
 Tip Space (Driven Element) = 102/Freq
 
 Tip Space (Reflector) = 65/Freq
Overall Tip Space = 145/Freq
Answers in inches...                            
 0.24xinches=metres

(A pic to explain the Tip spacing formulae.. )

 

 

 

 

Copyright © 1997 - 2004   -   John Tait  EI7BA   -   All rights reserved

 

CUBICAL QUAD ANTENNA CALCULATOR
 http://www.qsl.net/yt1vp/CUBICAL QUAD ANTENNA CALCULATOR.htm

 


    

 

 

 

 

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