Re: [IRCA] Tower height vs power

[Charles A Taylor <MWDXer@xxxxxxx>]

At 11:41 AM 2/3/2007 -0800, you wrote:
>I have never seen nor heard of any AM Broadcast station -- ever trying to 
>use a full wave length tower.  It would be very very difficult to 
>feed.  Does anyone know of any AM broadcaster using a full wave tower ???

Mike,

Disagree. Standard theory suggests that a full-wave tower would have a 
rather low impedance, requiring some unusual matching, but nothing 
insurmountable. Alternative feed method would be to ground the tower and 
run a feedwire up the side of the tower to a point where the feed impedance 
would be more typical.

In principle, it should be possible to find a point at a fraction of the 
tower's height where there would be a 52-ohm resistive match exactly.

73 de Charlie

        -----
Charles A Taylor, WD4INP
Greenville, North Carolina 

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