[Elecraft] KXPA100 remote DC Power Control

[John Marvin]

It looks like there may be multiple ways of controlling power on the 
KXPA100. Obviously there is the front panel power switch. Another method 
is that the KX3 can turn the amp on. Does anyone know how that is 
accomplished? It appears there is a "PWR ON" pin in the 8 pin control 
connector, but looking at the KX3 interface cable it doesn't look like 
anything is connected to it. Is there an undocumented serial command 
involved? I don't see anything in the command interface document, but 
perhaps I missed it.

Second, how does the "PWR ON" pin work, i.e. does a voltage have to be 
applied, or does the pin have to be connected to ground?

FYI, I don't own a KX3, but I'm wondering about the possibilities of 
controlling power to the KXPA100 remotely.

Thanks,

John
AC0ZG