[Elecraft] K3 SWR Accuracy - reprise
Bob Cunnings
bob.cunnings at gmail.com
Mon Nov 9 10:10:15 EST 2009
Speaking of the KAT3, Jack's report doesn't state whether or not his
K3 contains the KAT3 module or not, and what state it's in.
Bob NW8L
On Sun, Nov 8, 2009 at 9:07 PM, Wayne Burdick <n6kr at elecraft.com> wrote:
> 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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