[TowerTalk] Impedance Matching Losses

2 2@vc.net
Fri, 31 Aug 2001 06:41:35 -0700


>
>Impedance matching losses.
>
>The efficiency of the antenna is not being questioned.
>Only the loss of power when coupling to it.
> ... ...
>A ground mounted wire half wave vertical fed at its base. Its feed point
>impedance will be in the thousands of ohms 

//  True

>with some reactance. 

//  A half-wave antenna exhibits zero reactance at it's resonant 
frequency.   

>Coupling to the 50-ohm coax can be done easily enough but what is the amount 
of
>power being lost.
>
//  When matched with the venerable L-network, little power is lost 
because operating Q is always minimal,  

cheers, Rich

-  R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.  
end


List Sponsored by AN Wireless:  AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 96 feet for under $1500!!  http://www.anwireless.com

-----
FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com