[Elecraft] K3 antenna tuner question

[Fred Jensen]

"Automatic" is a word with lots of meanings.  When it is in "AUTO" and 
you tap ATU TUNE, it will "automatically" find a match using the power 
you have set in CONFIG:TUN PWR.  Mine is set to 5W.  It then "remembers" 
the L/C settings for that band segment for the ANT selection you are 
using [1 or 2].  The next time you are in that band segment using that 
ANT selection, it recalls the settings the first time you transmit [PTT 
or KEY].

The band segment sizes depend on the band.  I believe they are:

	160: 10 KHz
	80-12: 20 KHz
	10: 100 KHz
	6: 200 KHz

You can just let the memorized settings accrue as you operate normally, 
or you can methodically go through the bands and set them all.  I did 
the latter, tuning to the middle of each segment with the antenna I 
normally use, and tapping ATU TUNE.  Seems to work really good.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2011 Cal QSO Party 1-2 Oct 2011
- www.cqp.org

On 5/23/2011 4:45 PM, Bill Swindell - K1LED wrote:
> I have a K3/100 with the internal antenna tuner. The config is set to AUTO
> but it seems that I still have to press the ATU tune button to get the ATU
> to properly tune when I change bands. Is it supposed to be automatic or not?