[Elecraft] K3/KAT500/XV integration

[George Kidder]

GM,

I am trying to get my K3 - KAT500 combination (which works well alone) 
to accept the addition of a XV144 (which works well with the K3 alone).  
Having to plug and unplug control cables to switch from HF to VHF is a 
non-starter.  I had hoped to pick of the control for the XV144 from the 
"AMP" socket on the KAT500, but when this is done, I get the message 
"turn on KAT500" on the K3 display, and nothing works until the plug is 
removed from the XV144.

I have contacted Support about this, but thought I would also see if the 
collective wisdom of this group can give any guidance.

Thanks for your consideration,

George, W3HBM (hunkered down at home in ) Bar Harbor, ME