If the ground is a quarter wave long, it will radiate, just like an
antenna. This is why a quarter wave ground plane has quarter wave
radials. There is a trick that works, I've seen it work. For a ground
wire, use csome coax. Use center conducter as the ground wire and gypass
the shield at each end with a .001 cap.
73s
Butch Bussen
wa0vjr