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Old March 6th 06, 08:34 AM posted to rec.radio.amateur.antenna
Richard Harrison
 
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Default Reflection Loss

Reg, G4FGQ wrote:
"The most important parameter is not SWR but the reflection coefficient,
Gamma."

My age is about the same as Reg`s. I have 4 children and 6
grandchildren, and am a veteran of WW-2, but doubt that adds to my
credibility. Neither does the beer I had with dinner add authority to
what I write. I have a degree in Electrical Engineering, but Americans
and probably Brits too view this credential with suspicion. It did open
the door to good jobs.

Reg expresses disdain for "bibles" such as Terman or Kraus but their
writings have endured the test of time and are proved by countless
experiments.

On page 99 of Terman`s 1955 edition of "Electronic and Radio
Engineering" (my textbook was an earlier edition) is found the formula
to convert the reflection coefficient into SWR or vice versa. These two
parameters are innexorably locked together by formulas (4-22a) and
(4-22b).

There really is no need to rename the ubiquituos SWR meter as Reg has
recommended. This really requires no comment as it isn`t about to
happen.

Best regards, Richard Harrison, KB5WZI

 
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