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I have no idea how they get their gain. I smell a Solarcon claim in the wood pile. The Vortek guys use Eznec + and that might make some difference.




1. Below are two antenna images at about the same location relative to the X and Y coordinates. I expanded the currents a little to make the differences more obvious. The Vector has more currents everywhere. So IMO this suggest more gain.


You could be right that the Vortex looks to be an elevated 3/8 wave, but some of the bottom of the 1/2 looks to be down inside the cone area...and I'm not to sure how that works. It could be wasted currents like the bottom of a 5/8 wave antenna. 


2. These two images compare the patterns for my Vector to specs vs. the older Vortex Mark 1 antenna...I think is a knockoff of the Vector 4K. I take this to mean my Vector model is pretty close to right if Vortex is also publishing their model of the M1 showing a similar pattern and gain by the way.