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Re: [TowerTalk] horizontally polarized antennas and salt water

To: "Stephen Reichlyn" <>,<>, "Pete Smith" <>
Subject: Re: [TowerTalk] horizontally polarized antennas and salt water
From: "Jim Lux" <>
Date: Tue, 18 Jan 2005 08:21:52 -0800
List-post: <>
Pete Smith wrote:
> It does, but not a bunch.
> I quickly modeled a 40m yagi at 104 feet over average ground versus salt
> water.  Forward gain went from 11.86 dBi (avg) at 18 degrees to 12.45 dBi
> (salt).  Takeoff angle, interestingly, went up one degree for the better
> ground plane.  Moving the antenna down 6 feet over salt water moved the
> takeoff angle up 1 more degree, from 19 to 20 degrees.

Just as an idle question..  I wonder if the gain change is due to a pattern
shape change (narrower main lobe), or due to a reduction in losses. The
average gain number would tell you, since it's integrated over all look


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