[Elecraft] KS3/P3 SWR Display Readings

[Nr4c]

No. You have just discovered the second law of SWR, "The confusion factor goes up exponentially with number of SWR meters in the system."

In other words the SWR reading in the K3S (via KAT3) is the result of "matching" antenna to the output of the amplifier in the radio (LPA or KPA3). Your sensor for the TXMON is between the antenna and the radio so does not know of the "match" and reports the un-matched SWR of the antenna. 

Oh, the first law, "You can never have too many SWR meters, in the closet."

Sent from my iPhone
...nr4c. bill


> On Dec 18, 2015, at 7:35 PM, Ferris Jennings <FerrisJennings at mindspring.com> wrote:
> 
> Hell-o Everyone -
> 
> 
> 
> Finished building my K3S and P3 (with TX Mon), and I'm starting to play with
> the configuration/menus.
> 
> I have the KAT3 ATU installed, and it works great. But I do have a question
> regarding the SWR displays.
> 
> 
> 
> I'm running a simple diploe, and the KAT3 tunes it down to 1.0-1 in a second
> flat. However, the SWR meter on the PS display always reads way higher,
> something like 2.9 - 1. I've swapped antennas and lead (another dipole), and
> I get the same results.
> 
> 
> 
> Question is: why the discrepancy in SWR from the K3S display to the P3
> display? Am I missing a configuration setting?
> 
> 
> 
> Thanks
> 
> -Ferris NB6T-
> 
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