[Elecraft] What is the correct way to hook up my K2 & K3 to my KAT500 & KPA300 ?

[Harry Yingst]

The KPA500 is connected to the the KAT500 via a 15pin cable (AUX on Amp,  AMP Control on KAT500)
The K3 is connected to the KAT500 via a 15 pin cable as well (ACC on K3, XCVR on KAT500)


I have a switch on the Input to the KPA500 that selects either the K2 or the K3


Do I connect the Key Out line from the K2 to the RCA Key IN (PTT RLY Red Jack)

and then the key signal to the AMP will be provided via the 15 pin cable?


Thank you