|To:||Stephen Reichlyn <Stephen.Reichlyn@ryansci.com>,email@example.com|
|Subject:||Re: [TowerTalk] horizontally polarized antennas and salt water|
|From:||Pete Smith <firstname.lastname@example.org>|
|Date:||Tue, 18 Jan 2005 11:10:14 -0500|
At 01:53 PM 1/17/2005, Stephen Reichlyn wrote:|
Gentlemen and Ladies of Towertalk:
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.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
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