[Elecraft] K3 with Amertiron amp

[Scott James]

I am getting my K3S soon. Have been using Yaesu 1000MP and Ameritron AL82 with 1000MP set to semi QSK and it is OK.
To tun a K3 into an ANertiron or any non Elecraft amp semi qsk, are there any setting I have to make and where would I find them?
Also, is the connector input for key out RCA connector and is the jack for the paddle an RCA. Or?

Tks much,
Gerry