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[TowerTalk] VSWR & Power

To: <>
Subject: [TowerTalk] VSWR & Power
From: (Martin Ewing)
Date: Sat Mar 1 13:44:47 2003
And if you have an open or short circuit, VSWR is infinite, and so are 
the forward and reverse power!  In real life, Tx power goes somewhere - 
into tuner and transmission line resistance - and VSWR is finite.


Chuck, W1HIS wrote:
(2) A meter between the tuner and the antenna will indicate
      Forward power =  133.33 watts;
      Reverse power =   33.33 watts;
      % refl. power =   25 %;
      VSWR          =  3:1; and
      the _net_ forward power is 133.33 - 33.33 = 100 watts.
      Note that the forward power exceeds the power output
      from the transmitter because the 33.33 watts of reverse
      power returning to the tuner is reflected from the tuner
      back toward the antenna.

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