[Elecraft] K3 SWR Accuracy - reprise

[Wayne Burdick]

Great data, Jack. We've been testing this, too, and we know why the  
K3's readings differ.

A firmware change will be made to improve the accuracy in general. But  
part of the difference on the higher bands is due to strays in the  
KAT3 module. These strays can be tuned out by the KAT3 itself, thus  
presenting the correct load to the K3 internally. But an external  
instrument is on the other side of the KAT3 and thus sees a slightly  
different match.

We'll post additional details soon. Meanwhile, no one need worry about  
this apparent discrepancy. The ATU is cancelling its own strays, and  
the SWR bridge is correctly reporting the load presented to the  
transceiver internally, which is the important thing when matching the  
rig to its load.

73,
Wayne
N6KR


----
http://www.elecraft.com

On Nov 8, 2009, at 7:18 PM, "Edward Dickinson, III" <softblue at windstream.net 
 > wrote:

>  _____
>
> From: Jack Smith [mailto:jack.smith at cliftonlaboratories.com]
> Sent: Sunday, November 08, 2009 10:00 PM
> To: Edward Dickinson, III
> Subject: Re: [Elecraft] K3 SWR Accuracy - reprise
>
> Dick:
>
> http://www.cliftonlaboratories.com/swr_accuracy.htm
>
> I posted a message to the Elecraft reflector about the page being  
> available
> but it has not shown up after an hour and a half.
>
> Jack K8ZOA
>
>
> Edward Dickinson, III wrote:
>
> Hi Jack.
>
>
>
> I extend invitation to apply your expertise regarding the matter being
>
> addressed in above referenced discussion.
>
>
>
>
>
> Best regards,
>
>
>
> Dick - KA5KKT
>
>
>
>
>
>
>
>
>
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