[Elecraft] What autotuner to use with KPA500?

[KD3RF]

I am using a borrowed LDG600 with "somewhat" satisfactory results, but will
also be buying a KAT500 if and when they are made available for purchase by
Elecraft.

The LDG tunes all of my antennas well except for 160 meters, where it has
trouble finding a match at times.  I'm using a 3 el cubical quad on 10/15/20
and a Butternut HF6V with 160 coil on the other bands.

The LDG is a great tuner, don't get me wrong... the principal challenge with
it is that when the LDG AT600 does a "full"tune, the first thing it does is
open all of the relays, which looks like an open circuit to the KPA500 and
causes it to fault.  

My other observation about LDGtuners in general is that they are very noisy
with a lot of relay clatter while it is tuning.  I realize that's a minor
complaint, but it would have been great if LDG had put in some noise
dampening inside the tuner case to tone down the noise.

Mind you, I iave not done any modifications to the tuner to connect an amp
disable line like Phil has done because the tuner does not belong to me. 

Nor have I gone up and down every band and memorized a bunch of tuner
settings like another user suggested to me.

Ideally the KAT500 will be well enough integrated to the K3 and the KPA500
to initiate a tuning sequence without causing the amp to fault.

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