SV: [AMPS] Re: The Worldwide, No Holds Barred, SWR Quiz.

[Lars Harlin]

SWR is quite an interesting issue. Seems like it still is place for a lot of confusion there...
However, I do agree 100 percent with your analyzis Vic! Guess its nothing more to say...

73 de Lasr/SM3BDZ

Skickat: den 5 oktober 1999 05:07
Ämne: Re: [AMPS] Re: The Worldwide, No Holds Barred, SWR Quiz.


> 
> measures wrote:
> > 
> > Vic wrote:
> > >Not correct!  A generator would see a 50 ohm load at this point, and would be
> > >able to match it as well as in the case of an arbitrary length of 50-ohm coax
> > >feeding a 50-ohm load.  However, the SWR on the coax is still 1.86 to 1.
> > 
> > Where on the coax?
> 
> Anywhere on the 93-ohm coax.  Now, IF you hooked a 50-ohm SWR meter to the end
> of 1/2 wavelength of 93-ohm coax, THEN you would get 1 to 1 -- because you would
> in effect be measuring the SWR on the tiny piece of 50-ohm coax that constitutes
> the 50-ohm bridge!  You are using the 1/2 wavelength of 93-ohm coax to trivially
> transform the 50-ohm load to 50 ohms, and you are connecting a piece of 50-ohm
> coax to it.  Of course the SWR is 1 to 1, on the 50-ohm portion of the system.
> 
> 73,
> Vic, K2VCO
> Fresno CA
> 
> 
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