[Elecraft] K3 SWR Accuracy - reprise

[N8LP]

He does have the KAT3, and it was in bypass for the tests.

Larry N8LP




Bob Cunnings wrote:
> 
> 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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