WOW!
Even if calibrated to a milli db, one still has to address the rir to rig
variability even
within a single production run much less run to run or yesr to year.
When I see that X is better by 20 db. ir really doesn't matter if 19 or 20.
I buy the rig to operate.
----- Original Message -----
From: "Paul Christensen, Esq." <w9ac@arrl.net>
To: <tentec@contesting.com>
Sent: Saturday, December 13, 2003 15:47
Subject: Re: [TenTec] Re: K2 beats Orion
> Thanks Cliff,
>
> I just read the ARRL's Test Procedures Manual and while detail is provided
> with respect to individual procedures, as far as I can see, the document
> does not address equipment calibration prior to each test, traceability to
> known references, and "time-between-calibration" procedures. The document
> is incomplete without such necessary detail.
>
> For example, when we're comparing numbers that are ever so close in
> performance, as in the case of the K2 v. Orion, what has happened to the
> test equipment between the time it measured the performance of the K2 a
> couple years ago and a recently tested Orion?
>
> - Is the same serial number equipment used?
> - How many times has the equipment been calibrated to a NIST reference?
> - Was the same operator conducting the tests?
> - And were those tests repeatable?
>
> The Manual does not appear to address these important issues. They're
> important when were discussing the kind of razor-edge close numbers were
> seeing under the microscope of the Product Review.
>
> I don't mean to devaluate the importance of the League's current testing
> procedure...it is just that more information is required in the Manual to
> absolutely believe the information presented.
>
> -Paul, W9AC
>
> ----- Original Message -----
> From: "Cliff" <csegar@mindspring.com>
> To: <tentec@contesting.com>
> Sent: Saturday, December 13, 2003 9:35 AM
> Subject: Re: [TenTec] Re: K2 beats Orion
>
>
> > At 08:00 AM 12/13/2003 -0500, you wrote:
> > >Anyone know if the League has documented and disclosed its step-by-step
> > >Product Review testing methods and procedures?
> >
> > IF you are a member (and I hope you are) you can go to
> > <http://www.arrl.org/tis/> and go down to "The ARRL Lab Test Procedures
> > Manual describes the test methods used by the ARRL Lab for Product
Review
> > testing. (1,509,134 bytes, PDF file)" and download the entire manual.
The
> > League doesn't hide anything and is very above board in all their tests
> and
> > procedures. The procedures were developed with the input of some very
> > top-notch hams engineers. Ed Hare & crew want their work to be relevent
> and
> > accurate.
> >
> > de KD4GT
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
>
> _______________________________________________
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