[Elecraft] K2 feedline question

[thom2 at att.net]

Hi all,

  Well spring is in the air and old man's fancy turns to antennas.  

  I have a K2 (s/n 1103) without the 100 watt amp and with the internal low power ATU. Unless procrastination gets the best of me again, I'd like to string up a new wire antenna this spring.

  I have a chunk of 400 ohm ladder line, which I'd like to use as the feedline and would like to know how and if I can use this with the K2/ATU.  

  Thanks

Tom WB2QDG
k2 1103