[Elecraft] K3 with KRC2--How?

[Robert Tellefsen]

I have a KRC2 connected to my K2, and the K3 manual
says it should be compatible with the K3 also, even to
plugging into the RS-232 port on the K3.  Tried it and the
KRC2 isn't responding, so now I'm trying to figure out why.
The K3 manual implies the cabling between KRC2 and K2
or K3 should be the same, so I hope that is correct.  I can't
find anything in the K3 manual talking about this.  Also
couldn't find anything on the KRC2 working with K3 in
the KRC2 manual.

I know there are some who have this working.  How did
you do it?
Thanks and 73
Bob N6WG