[Elecraft] W2 Questions

[Wes Stewart]

And take a look at HP's note AN64 (cp.literature.agilent.com/litweb/pdf/5965-6630E.pdf), particularly chapter VII.  After that, the question about whether more resolution is necessary or meaningful might be moot.



--- On Wed, 12/9/09, Paul Christensen <w9ac at arrl.net> wrote:


> 
> You asked the question about what it takes to achieve
> better accuracy.  You 
> may want to read N8LP's excellent article in QEX from a few
> years ago, along 
> with articles from Warren Bruene, Roy Lewallen,  John
> Grebenkemper, and 
> others who have published on the accuracy subject.
> 
> Paul, W9AC
> 
> 
> ----- Original Message ----- 
> From: "Phil Hystad" <k7peh at comcast.net>
> To: "Elecraft" <elecraft at mailman.qth.net>
> Sent: Wednesday, December 09, 2009 7:51 PM
> Subject: [Elecraft] W2 Questions
> 
> 
> >A few questions about the W2 meter:
> >
> > 1.  The posted accuracy is +- 0.5 dB which I
> calculate as about +- 12 %. 
> > Is this full scale accuracy and if so is half scale
> possibly more accurate 
> > or is this the most accurate the meter is likely to
> be.  I am not even 
> > sure if it makes a difference for full scale or half
> scale for a digital 
> > meter so that part of my question may be moot.
> >
> > 2.  What does it take to achieve an accuracy
> better then 5 % (for 
> > example), and is it possible to achieve an accuracy of
> 1 % or better?  I 
> > am curious as to where the money needs to be spent in
> achieving such 
> > accuracy.  Is it in the directional coupler?
> >
> > 3.  I am thinking that the company that can build
> the best receiver on the 
> > market (the K3) can also build the best meter. 
> So, would Elecraft 
> > principles consider a future super-accurate, best on
> the planet, amateur 
> > radio RF/SWR power meter?  Oh, I think a current
> meter would be cool too.
> >
> > And, I know that having meter accuracy is of little
> importance in ham 
> > radio but there is some kind of deep seated quirk in
> me that wants 
> > accuracy just for the heck of it.  Certainly 5 %
> is achievable, right?
> >
> > 73,
> > phil, K7PEH
> >
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