[TowerTalk] 40-m. 4-Square vs. 40-m. Yagi - Update

[K4SAV]

A four square over salt water is very difficult to build.  It almost 
requires a salt water marsh.  If you have salt water available, you may 
want to check out the vertical phased dipoles that some of the 
DXpeditions have been using lately.  It's actually a two element beam 
oriented vertically with two elements configured in a diamond shape.  
This should beat your XM240 by a significant amount below about 13 
degrees elevation.  Don't try this over average ground.  The ground will 
eat your signal.

Jerry, K4SAV

K4SAV wrote:

>..."I didn't tell the whole story about the 1/4 wave vertical:
>it's mounted 30' out in a saltwater river that has a pretty clear 
>saltwater path to Europe, Africa, and South America. "....
>
>There is a huge difference between a vertical over salt water and one 
>over average ground, maybe as much as 15 dB at very low angles.  With a 
>decent radial system to get connection to the salt water, the vertical 
>should beat the XM240 below about 6 degrees elevation (even if the XM240 
>happens to be over salt water too).  From about 6 degrees thru 44 
>degrees elevation, the XM240 should win. 
>
>Or so says EZNEC.
>
>It sounds like the only connection you have to the salt water is the 
>feedline (assuming you didn't add a choke).
>
>A four square over salt water is a very good weapon.
>
>Jerry, K4SAV
>
>RLVZ at aol.com wrote:
>
>  
>