Gilmer, Mike wrote:
>This doesn't say I thought the SWR varied ALONG the cable. I'll
>rephrase: In a system where (at the far end) the load (antenna) and
>cable have different impedances, the impedance seen looking into the
>near end of the cable will change depending on cable length. Correct?
>
>Therefore, does that not imply that the SWR at, say, the amp/cable
>interface (50 ohm source, changing load), also change depending on the
>length of said cable?
No, that's not correct. That is the same as saying that SWR varies along
the length of the cable. SWR is the ration of the forward and reflected
voltage. This ratio is constant along the cable regardless of length.
So it is possible the to tap into a 50 Ohm real resistance spot on the
cable and still have a high SWR.
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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