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Re: [Amps] MOSFET amp filtering - was: auto-tune

To: jim@audiosystemsgroup.com, Amps Amps <amps@contesting.com>
Subject: Re: [Amps] MOSFET amp filtering - was: auto-tune
From: Tom Thompson <w0ivj@tomthompson.com>
Date: Mon, 12 Dec 2016 20:03:42 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Jim,

/Lousy soil does NOT vary the vertical angle, it simply attenuates the signal. In the near field, it burns transmitter power by warming the worms. In the far field, it degrades ground wave and weakens the first reflection that creates the vertical pattern./

Lousy ground does raise the take off angle of the maximum point on the lobe of a vertical. EZNEC shows the maximum point on the take off lobe going from 18 degrees with very good ground to 26 degrees for rocky mountain ground.

73,   Tom   W0ivj


On 12/12/2016 7:08 PM, Jim Brown wrote:
Lousy soil does NOT vary the vertical angle, it simply attenuates the signal. In the near field, it burns transmitter power by warming the worms. In the far field, it degrades ground wave and weakens the first reflection that creates the vertical pattern.

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