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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