[Elecraft] Like MFJ's 931 Artificial Ground ?

[Able2fly at aol.com]

Is there a kit version of the "artificial ground" available? Even a  
schematic would be nice. I would assume that its just a series tuned L/C with a  meter 
to measure RF current somehow, but if anyone has come up with a version of  
their own, or knows of a kit, I'd like to hear about it.
 
Thanks, Bill  K3UJ