My KXPA100 arrived last week.  Got it assembled and am very pleased.  Just need to figure out the portable power to drive this thing now.  Solar and a decent battery is what I'm thinking.

We were out camping over the July 4th weekend.  I pulled the KX3 out for a couple of contacts in the 13 Colonies Special Event.  Used the LNR EndFedz on the 31' Jackite pole.  Worked great!  I think I've found a decent portable kit.  Maybe a magnetic loop antenna for when I can't put a wire up, but otherwise I'm pretty happy.

I put up an Off Center Fed Dipole fed with some 450 Ohm window line using a 4:1 balun (rogertango.com).  I'm using 45ft on one leg and 90ft on the other leg.  So far, it's looking good.  SWR is low across several bands and it can hear very well.

Update:  I took the OCFD down and put up a loop.  I need to get it up a bit higher, but it hears pretty good.

My portable HF kit is coming together rather nicely.  To go along with the KX3, I've got a 31' Jackite pole for antenna support.  I have a 88' doublet fed with 300 Ohm twinlead and a 20m dipole fed with 450 Ohm window line.  I tossed a short piece of RG-8x into the bag for use with my binding post-to-BNC adapter just in case I have issues with using the twinlead or window line.

I'm powering everything from a pair of 3200 MAh LifePO4 batteries connected in series to get 13V.  The LifePO4 batteries are rather light for the power they provide and can take a charge rather quickly.