[AMPS] Hold on - SWR meter placement

[measures]

>
>
>-----Original Message-----
>From: measures <measures@vcnet.com>
>To: AMPS <amps@contesting.com>
>Date: 09 October 1999 15:35
>Subject: Re: [AMPS] Hold on - SWR meter placement
>
>
>>
>>>
>>>Rich,
>>>There are several possible reasons why your measurements
>"varied all
>>>over the place."
>>>
>>>1. You have a defective SWR meter
>>>
>> A halfwave of 93 ohm coax was connected to a 50 ohm
>termination.  The
>>50-ohm swr meter) was inserted at the end of the 93 ohm
>section and the
>>reading was 1:1.  At the center of the halfwave section,
>the swr was
>>93/50 =1.86:1.    .  .  The bottom-line is that when you
>have a matched
>>line, SWR-reading will not vary no matter where the meter
>is inserted.
>>However, with a mismatched line, placement of the SWR meter
>matters.
>
>If you used a SWR meter set up to work with Zo of 93ohms,
>the reading would not change with position. 

Are you saying that if a 93-ohm swr meter were connected to one of the 50 
+/- j0 ohm points it would read 1:1 -- the same as if the meter were 
positioned at the center of the 93-ohm half-wave coax section?  

>If the setup
>impedance of the meter and the impedance of the line between
>the meter and the termination are different, then the
>reading will vary with position.
>
And the reading will always
>Steve
>
>
>
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>


-  Rich..., 805.386.3734, www.vcnet.com/measures.  


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