On Tuesday, October 05, 1999 4:09 AM, measures [SMTP:measures@vcnet.com]
wrote:
>
> >
> >On Monday, October 04, 1999 1:40 PM, Vic Rosenthal
> >[SMTP:rakefet@rakefet.com] wrote:
> >>
> >> measures wrote:
> >> >
> >> > >What is the SWR as measured at the generator with a 50-ohm
> >> > >characteristic-Z SWR meter?
> >> >
> >> > ? At the end of an any characteristic.-Z halfwave transmission
line,
> >the
> >> > termination Z repeats itself -- with a reactance reversal. .
> >Since
> >> > there is no reactance in this termination, the Z at the end of
the
> >93-ohm
> >> > halfwave line is 50 +/- j0 ohms, the SWR is 1:1.
> >>
> >> No. It is correct that the impedance seen by the generator is 50
ohms
> >but the
> >> SWR is unchanged, regardless of the line length. The SWR is
entirely
> >> determined by the impedances of the line and the load.
> >>
> >
> >Yes. From what everyone's told me, this is 1.86:1 (93/50) regardless
of
> >the line length.
> >The Z looking into the cable is 50 ohms, but there's standing waves
on
> >it from the load/cable mismatch.
> >Those SWs don't change (or go away) because the Z changes.
>
> ? How do these standing waves remain invisible to the SWR meter at
the
> halfwave measuring point?
> >......
I think only you say they do.
I didn't.
73
Mike
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