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TopBand: ground losses

To: <topband@contesting.com>
Subject: TopBand: ground losses
From: sears@rell.com (sears@rell.com)
Date: Thu, 14 Aug 1997 11:57:41 -0500
     A ground mounted 1/4wave vertical with the highly conductive Gumbo 
     soil of North Texas really helps the far field pattern.
     
     Peter
     W5PS


______________________________ Reply Separator _________________________________
Subject: TopBand: ground losses
Author:  Peter Chadwick <Peter.Chadwick@gpsemi.com> at internet
To: <topband@contesting.com>
Date:    8/14/97 5:30 PM


Following on from Jim's point, how far out from the base of the vertical 
do you need to go with a method of reducing ground losses? Intuition 
suggests there would be advantages of getting out into the far field, 
probably a half wavelength or so. However, the USAF study on antennas for 
airborne SINGCARS suggested that a vertical over an infinite resistance 
ground gave the best low angle radiation. So maybe a vertical dipole in 
Arizona?
     
73 de Peter G3RZP
     
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