Richard Harrison wrote:
I don`t have a dog in this fight.

Neither do I, Richard. The ARRL Antenna Book seems to assume that
the loss in a line is proportional to forward power plus reflected
power. If reflected power equals zero, then the losses are matched
line losses. I posted an example through Google to which nobody
responded so I will re-post it he
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Here's an example. Assume 100w is delivered to the load for both the
matched and unmatched conditions. Assume 3dB matched line loss in the
transmission line. Assume an SWR of 5.83:1 (rho=0.707) at the load for
the mismatched condition.

Forward 200w------------3dB loss-------------Matched Load 100w


Forward 400w------------3dB loss-------------Mismatched Load 100w
Reflected 50w both Forward 200w
directions Reflected 100w

The ARRL equations give an additional loss of 5.44dB.
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It is obvious (to me) that if there are reflections at the load, then
more power must be sourced in order to deliver the same amount of power
to the load. But I am pretty simple-minded about obvious things. :-)
--
73, Cecil http://www.qsl.net/w5dxp