[Elecraft] KAT3 Automatic Antenna Tuner

Don Wilhelm w3fpr at embarqmail.com
Wed Mar 24 08:21:42 EDT 2010


Robby,

It all depends on how you define "Automatic".

The K3 ATU remembers the settings for 2 antennas in each band segment.  
It will automatically switch to those settings as you tune from band to 
band or through any one band.

If your expectation is that the K3 ATU tuner will automatically re-tune 
when it finds an SWR higher than some specified amount, then none of the 
Elecraft tuners will do that.  You must initially tap the ATU TUNE so 
the proper tuner settings for that antenna and band segment can be found.

I for one prefer it the way it is rather than the tuner deciding when it 
needs to re-tune.  I have one radio with an internal that decides it 
must re-tune as I tune through a band.  It drives me nuts since I have 
to wait for it to re-tune before moving on.  Fortunately, I can turn it 
off in that radio and I have not used it in years.

73,
Don W3FPR

Robby.VY2SS wrote:
> Can someone tell me how to make the automatic antenna tuner tune
> automatically?
>
> Mine only acts as a memory tuner and I have to push the ATU Tune button to
> make it tune. 
>
> -Robby
> VY2SS
>   
>


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