[Elecraft] SWR Calculation

[Bob McGraw K4TAX]

Not directly that I'm aware.   Personally, I have a Bird 43P on the 
output of the amp.  That way I can read the forward power and then 
reflected power with a reasonable amount of accuracy.   Then using the 
Bird VSWR Nomograph I can accurately determine VSWR.

With 500 watts output then if the reflected value is:

0.6 watts = VSWR 1.07

1.1 watts = VSWR 1.1

2.5 watts = VSWR 1.15

5.0 watts = VSWR 1.22

8.5 watts = VSWR 1.3

15 watts =  VSWR 1.4

28 watts = VSWR 1.6

55 watts = VSWR 2.0

If you have more than that, you need to do some antenna work.

73

Bob, K4TAX


On 1/30/2020 12:58 PM, Richard wrote:
> Is there any way to make the KPA500 display rateflected power?
>
> Cheers,
>
> Richard Kunc ~ W4KBX
> FlatHat at comcast.net
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