[TowerTalk] inverted L vs T

jim Jarvis jimjarvis at optonline.net
Thu Oct 9 12:27:09 EDT 2008



Here's a great example of how models can lead you astray.

At the W2GD 160m contest site, in South Jersey, we had an inverted L  
as a secondary
antenna.   Mostly used for stateside contacts, but occasionally for  
EU and SA.

The models said a Tee would give us a more uniform pattern, vs. the  
lumpy one of the Ell.
so, we changed.    It was a dummy load.    We couldn't work much of  
anything on it.

After the first night, we yanked it down and reconfigured to an Ell-- 
and once again could break
EU pileups, and work the west coast with it.    Both antennas were  
fed from the same coax, through
the same balun, and against the same elevated 4 radials.

While I fail to understand it, the Ell clearly was better.

The main station antenna, by the way, was a 2 element sloper array,  
with a delta loop reflector,
aimed either NE or W.

N2EA





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