[Elecraft] Thoughts on internal vs external ATU for K3

[Don Wilhelm]

Chuck,

The short answer is YES.
The longer answer is if you move far enough away from the original 
frequency where the antenna was tuned,. and the SWR increases, just do 
another TUNE and that will be remembered for  that band segment too.

I believe you also asked about an external wattmeter - that is not 
required at all, the indicators on the K3 display will tell you what is 
going on.
If you do use an external wattmeter, be aware that you cannot insert it 
between the K3 PA and the KAT3.  That is the only place that the SWR 
will change (BTW, that is the place that is monitored for power and SWR 
by the K3 itself and indicated on the display).
An external wattmeter in your antenna line after the tuner will show an 
unchanging SWR - whatever SWR the coax is running at and that will not 
change with tuning the KAT3.  While that may be informative, it is not 
important for the K3 operation.

73,
Don W3FPR

callen1155 wrote:
> Still confused guys on the Re-Tune issue. So on my coax fed dipole, if I
> press ATU TUNE at 7.030, wouldn't that be enough to tune the 7.000 thru
> 7.060 freq range without retuning whenever I 'band switch' back to 40 meters
> and operate in the above cw range?
>
> chuck
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