Elecraft KXPA100 Manual - Manual (Page 37)

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Antenna Tuner
For those KXPA100s equipped with the optional KXAT100 ATU:
 Mode: Indicates current ATU mode. Click on radio button to change mode.
 Antenna: Indicates active antenna connector. Click on radio button to change antennas.
 Capacitance pF and Inductance nH: Indicates values of capacitance and inductance switched in for the
current tuning solution. The values of capacitance and inductance can be adjusted manually using the up
and down arrows next to each window or by clicking on the radio button next to each capacitor or
inductor value. See Theory of Operation on page 40 for more details about the ATU circuit.
Tune: Click to start a tune operation. If sufficient RF drive is not present, the ATU will perform a tune operation
the next time sufficient RF is present. Click Tune again to cancel the tune operation.
You can clear the tuning solutions stored in memory for each band and antenna. On the Configuration tab, click
on the Erase Tuner Memories… button and use the radio buttons to select the bands and antennas whose tuning
solutions you wish to erase.
Configuration Save and Restore
Click on the Configuration tab and click on the Save KXPA Configuration to save or Restore KXPA
Configuration to restore a previously saved configuration. The configuration data includes the tuning solutions
for each antenna connector.
Updating KX3 Firmware
If you have a KX3 connected to the KXPA100 through the Adapter Cable, you can use the KX3 Utility program
with the interface cable connected to the KXPA100.
If the KXPA100 is on when you run the KX3 Utility program to upload new KX3 firmware, you will see the
KXPA100 switch off as the KX3 responds to the firmware upload. It will remain off until the upload is complete
and then turn itself on again.
If the KXPA100 is off, the data will pass through it to the KX3.
You cannot run both the KX3 and KXPA Utility programs at the same time.