Roger D. Johnson wrote:
> After reviewing the manual for my Bird 43, I have come to the
>conclusion that the Zo of the SWR meter will have little or no
>effect on the SWR readings when used in lines of other impedances.
>The power indications will be off as the meter is calibrated for 50
>ohm systems but the RATIO of forward to reflected used in the
>SWR computation should remain the sam
I am afriad though that you can't necessarily rely on those ratios can
you? Because there is an impedance discontinuity at the interface on
each side of the meter. So are you really measuring the forward vs.
reflected power on the transmission line or are you introducing
additional reflections due to the impedance mistmatch of the bird with
the coax?
Perhaps not. It's just food for thought.
73,
Jon
KE9NA
--------------------------------------------------------------------------
The Second Amendment is NOT about duck hunting!
Jon Ogden
jono@enteract.com
www.qsl.net/ke9na
"A life lived in fear is a life half lived."
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