Richard Clark wrote:
That is to say, this "mathematical" distinction that some rely on to
differentiate their arguments has not got one scintilla of difference
over any other method.

I must have a dozen equations for SWR, all mathematically consistent
with each other. A lot of the math is performed by simply calibrating
a meter face. For instance, given a linear meter reading for |rho|
with full-scale equal to 1.0, SWR values can be applied to the
meter face with 3.0 at half-scale. (Ever notice how many SWR meters
have 3.0 at half scale?)
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73, Cecil http://www.qsl.net/w5dxp