There was a typo in the byte <cc> information -- now fixed.

Wayne

* * *

Michael Blake <k9...@outlook.com> wrote:

> Does the KX3’s internal auto tuner have the ability to provide the tuned 
> solution like the Elecraft T1 QRP tuner does? 

Hi Michael,

You can use the "AK;" command to get the KXAT3's relay states.

The response format is

  AKaabbcc;

where:

aa = inductance IO bitmap in ASCII hex
bb = capacitance bitmap in ASCII hex
cc = misc relays bitmap in ASCII hex

The <aa> and <bb> bitmaps can be equated to L and C values by looking at the 
KXAT3 schematic. For example, a value of "01" would represent the smallest L or 
C value in the network.

At present only bit 0 of byte <cc> is defined:

00 = capacitors on the antenna side
01 = capacitors on the transmit side

If the ATU is not installed, or is in one of the Lx/Cx test settings, 
“AK000000;” is returned.

In BYP mode, on some bands L and C are set to fixed non-zero values in order to 
cancel the ATU's own reactance when working into a 50-ohm load.

In AUTO mode, the working auto-tuned values are shown.

73,
Wayne
N6KR





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