Re: high-power tuner

Posted by Ian Kahn, KM4IK on Feb 24, 2012; 6:32pm
URL: http://elecraft.85.s1.nabble.com/high-power-tuner-tp7314904p7315639.html

Wayne, thank you for the update on the KAT500 progress.  While I won't be
at Dayton, I, too, would love to see at least photos of the prototype
posted to the web site.

All others - Thank you for the suggestions.  Fortuitously, I actually was
offered, at no charge, a legal limit manual inductor roller tuner.  Since
this one is free, I'll take it and bide my time until Wayne, Eric, and
Company release the KAT500.

73,

--Ian
 Ian Kahn, KM4IK
Roswell, GA  EM74ua
[hidden email]
K3 #281, P3 #688



On Fri, Feb 24, 2012 at 1:09 PM, Greg Beat <[hidden email]> wrote:

> Ian -
>
> I have been watching product developments
>
> I this power/automatic operation category:
>
>
>
> Palstar HF-AUTO
>
> http://www.palstar.com/hf-auto.php
>
>
>
> RF Concepts/Alpha 4040 Automatic Tuner
>
> http://www.rfconcepts.com/PRODUCTS/New-Products/Alpha4040
>
>
>
> E-Z Tuner - Jim Garland, W8ZR
>
> (2002 QST article and ARRL Handbooks)
>
> http://www.w8zr.net/eztuner/index.htm
>
>
>
> I made a suggestion to Steve at RF Concepts, a couple of years ago,
>
> when RF Concepts was planning a high-power HF automatic tuner.
>
> They needed to incorporate more uProcessor/controller power (since W8ZR
> Basic Stamp)
>
> in their planned offering, since the state-of-art has progressed since
> 2002.
>
> They did, using Linux kernel with the Beagleboard XM
>
>
>
> The Palstar and RF Concepts/Alpha offerings are INDOOR tuners.
>
> I have a preference to have the tuner outdoors at the antennas
>
> or feedpoints (like commercial broadcasters).
>
> ==
>
> IF Wayne, N6NR is coming to Dayton -
>
> it would be nice to SEE one of the KAT500 prototypes
>
>
>
> ==
>
> Greg, w9gb
>
>
>
> === previous message ===
>
> Date: Fri, 24 Feb 2012 08:32:58 -0800
>
> From: Wayne Burdick <[hidden email]>
>
> Subject: Re: [Elecraft] high-power tuner
>
> To: Bill Hammond <[hidden email]>
>
>
>
> > We're just making sure performance is as good as possible. (The stakes
>
> > are even higher in a QRO tuner.)
>
> >
>
> > The most recent prototype worked great, in general, but on 6 meters we
>
> > felt the  loss was a fraction of a dB too high. The PCB layout has
>
> > been changed to cut the RF path length and strays by a factor of two,
>
> > which should do the trick. We'll receive these boards in a week or so
>
> > and should have test results a week after that. This suggests that we
>
> > could have some field test units out in mid/late-March.
>
> >
>
> > 73,Wayne - N6KR
>
>
>
>
>
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