High frequency and linuxcnc

Hello. I recently bought a 10.5x25 foot plasma table running off a burny 10 plus lcd. I would like to upgrade it to modern servo motors and Linux cnc. I have a hypertherm ht2000 to go with it. I have a concern for rf shielding with this being a high frequency plasma unit. Is my concern realistic here? What are ways I can avoid the noise? Previously I was using a everlast 102i and had little to no issues with rf. 

It works, no doubt about it, just takes a bit of work and care, and some better cables.
See
forum.linuxcnc.org/plasma-laser/36734-le...ring-and-emi?start=0
forum.linuxcnc.org/49-basic-configuratio...works?start=30#56014
And
forum.linuxcnc.org/plasma-laser/38974-di...rything-in-one-place