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

[jono@enteract.com (Jon Ogden)]

measures wrote:

>> The impedance of the load will appear to vary 
>>as you move down the line (if it is different than the characteristic 
>>impedance), but the SWR won't.
>>
>?  Impedance changes but indicated SWR won't?

Not if the impedance of your transmission line is the same is the 
impedance of your source.  Draw it out on a Smith Chart, Rich.

You move along a constant VSWR circle with 50 Ohms as the center of that 
circle.  The radius of the circle is the magnitude of the VSWR.  This 
assumes a 50 Ohms sytem and a Smith Chart normalized to 50 Ohms.

As you move from the load (your starting point) clockwise toward your 
generator you move on that CONSTANT VSWR circle.  But your impedance 
(real and imaginary) components change.  Another way to it it is that the 
polar magnitude of your impedance stays constant but the angle changes.

73,

Jon
KE9NA


-------------------------------------
Jon Ogden
KE9NA

http://www.qsl.net/ke9na    <--- CHECK IT OUT!  It's been updated!!!!!


"A life lived in fear is a life half lived."


--
FAQ on WWW:               http://www.contesting.com/ampsfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm