[Elecraft] Elecraft KAT500 autotuner in pair with the JUMA PA1000

[Irma & Linas(LY2H)]

Hello group,
I wouold like you to share your personal experience info on the setupping
,wiring and running the two? any tips welcome, like where'd you get the PTT
key line from for the KAT500 to switch?
As a trx I use the K3/ modified to S.
One antenna is balun end fed 43m LW. The other is R8

Season's Greetings!
73 de Linas LY2H