[Elecraft] KPA100 remote w/o KAT100?

[Dan Schieler]

Hi, I'm proud owner of K2 SN 4426.  Have built this out as a QRP rig
with KBT2, KATU, KDSP, SSB, NB.  Ordering the 160 module today.  I also
want to have 100W capability but don't think I want to build it in the
rig, I'd rather put it in a EC2.
  
The main reason I don't want to build the KPA100 in the rig is that I
travel frequently and sometimes like to take my K2 with me.  I just
assume it is an effort to take out the top with the KBT and put in the
KPA100 top section.  Is my assumption correct?  Can I keep the 20W tuner
in the rig if I put in the KPA100 and just put it in CALP mode?  Can
this happen automatically so I don't accidently toast the tuner with
100W?
 
All of the posts I have seen regarding remoting the KPA100 always
include the KAT100, which I don't think I want.  Reason is, the only
time I'd use the 100W is when I'm home in the shack using mostly
resonant antennae but also I have my KW tuner in line as well.  I run a
linear amp when needed for DX and bad conditions which the KPA100 would
drive at 65W or so.
 
Therefore, can I just order the KPA100 and EC2?  Do I need a KIO in the
rig to interface with KPA?  I would want to interface the K2/KPA100 to
my N3FJP program so I would most likely do the dual uart cable I've seen
from the KPA100.
 
Appreciate the feedback.
73
K5GUS
 
Dan Schieler