> What the readings tell you - two things, the degree of mismatch at the
> output of the meter (relative to the meter Zo) and the amount of power
> absorbed by the feeder and load downstream of the meter. If the meter
> has perfect isolation between forward and reverse readings (infinite
> directivity) then I think these are valid regardless of the VSWR.
Sometimes 20dB or so is close enough to perfect. 20dB is 1%.
That is not a significant error when the meter itself is 5% or so of
full scale anywhere on the scale.
Read the measurements I posted, or better yet make some
measurements of your own.
The Bird meter works just fine if you subtract reflected power from
forward power.
73, Tom W8JI
W8JI@contesting.com
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