Well, I switched my 160 inverted L to 15 meters and tried it.  The first pass 
through the SWR would jump about every 20 khz and I would need to retune, the 
second pass the SWR stated low as advertised.  After a year and a half and 
7,000 plus Qs I still learn something new about the K3 pretty often.  I guess 
most of the time I tune my SteppIR and when I am on 80 and 160 I usually am 
using an amp, so I never noticed.  Now it it would self initiate the tuning at 
about 1.5 SWR it would have it all!  That all said, the only thing left is K3, 
great rig, KAT3, great tuner, if you don't own one, sell your Kaycom and get 
one!
 Willis 'Cookie' Cooke 
K5EWJ 




________________________________
From: WILLIS COOKE <wrco...@yahoo.com>
To: d...@w3fpr.com
Cc: callen1155 <callen1...@yahoo.com>; elecraft@mailman.qth.net
Sent: Wed, February 24, 2010 3:29:31 PM
Subject: Re: [Elecraft] Thoughts on internal vs external ATU for K3

I do have a KAT3 and have never owned a KAT2 or KAT100.  My owners manual is 
the one that came with the K3 in June of 2008.  It does not say anything except 
pushing the ATU Tune button.  What you say is news to me!
 Willis 'Cookie' Cooke 
K5EWJ 




________________________________
From: Don Wilhelm <w3...@embarqmail.com>
To: WILLIS COOKE <wrco...@yahoo.com>
Cc: callen1155 <callen1...@yahoo.com>; elecraft@mailman.qth.net
Sent: Wed, February 24, 2010 3:09:09 PM
Subject: Re: [Elecraft] Thoughts on internal vs external ATU for K3

Cookie and all,

That is *not* true for the KAT3 (it was for the KAT2 and KAT100).
Look on page 22 of the new owners manual.  The K3 saves up to 30 ATU setting 
for both antennas on every band.

However, if you have not yet done so, you will have to do a TUNE at several 
frequencies throughout the band so the settings are recorded.  If you change 
the antenna that is connected to either ANT1 or ANT2, you have to do that all 
over again - but once tuned, the settings for that band portion will be 
retained.
Let's see -- 30 settings on a wide band like 80 meters (500 kHz wide), that 
means  you can have a different setting for every 16.67 kHz segment of 80 
meters.  That should handle even the most narrowband antennas.  Similarly 10 
meters is 1.7 MHz wide, so the KAT3 can remember a unique setting every 56.67 
kHz, and on 6 meters (4 MHz wide), every 133.33 kHz.  Not too bad.  The band 
segment boundaries may not be on exactly the intervals that I have stated - I 
simply divided the width of the band by 30 to get a general idea of the 
spacing, but in any case it should be quite adequate.

73,
Don W3FPR

WILLIS COOKE wrote:
> You don't have to if you go back to the same frequency, but if you were on 
> the cw band and go back to the phone band you might, depending on if the load 
> changes.  It does not seem to remember the settings for frequencies within 
> the band, but it is just the push of one button and two or three seconds to 
> tune again.
>  Willis 'Cookie' Cooke K5EWJ  



      
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