Input vs. Output

Jeramy Thibodeaux kg4azt at EARTHLINK.NET
Sat Dec 10 23:11:37 EST 2005


Sorry!
That should read!

SWR = (Sqare root of power forward + Square root of power reflected) / 
(Square root of power forward - Square root of power reflected)

Jeramy
kg4azt

----- Original Message ----- 
From: "Jeramy Thibodeaux" <kg4azt at EARTHLINK.NET>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Saturday, December 10, 2005 10:42 PM
Subject: Re: [HEATH-TEMPE] Input vs. Output


>      SWR = (ÖPf + ÖPr) / (ÖPf - ÖPr)
>
>
>
> ----- Original Message ----- 
> From: "Mel Vance" <icra at GALAXYNET.COM>
> To: <HEATH at LISTSERV.TEMPE.GOV>
> Sent: Saturday, December 10, 2005 6:45 PM
> Subject: Re: [HEATH-TEMPE] Input vs. Output
>
>
>>>
>>> The common availability of OUTPUT meters came much later
>>> with the development of solid state diodes.  The ability to measure
>>> fwd and
>>>
>>> reflected power and then calculate the VSWR was quite a blessing (I
>>> think). Now we take for granted what the SWR meter tells us when we
>>> connect our rigs to an antenna.
>>>
>> OK....I know that you can use the FWD and REF power levels to figure out 
>> the
>> SWR.....
>>
>> Only problem....with all the SWR meters available, I have forgotten 
>> how....
>>
>> Now find myself without an SWR meter for VHF/UHF, but do have a power 
>> meter
>> that reads both forward and reflected power....
>>
>> How do I figure the SWR?
>>
>> Mel
>> N7OKL
>>
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>
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Products bought, sold or traded here is the responsibility of the
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for losses or misrepresentations of any kind.  Buyer beware!

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This list is a public service of the City of Tempe, Arizona
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