I have a couple of those here, about 150 feet long and they have at times surprised the heck out of me.
My best one is made with very fine wire...2 strands of #26 I think it is, maybe #24, telco "crosscut" wire it was. It is about 150 feet long and has given better results than those I have had made with heavier wire. My reference is a K9AY loop, which I have been using for years. Soil conductivity here is about as bad as it gets. I have to replace the wire every year or so when something breaks it. All the BOG's have very low signal output, require braid breakers to keep the power line away, and fail to work at all if the ground is snow covered or very wet. I have a theory: I think the fine wire works better because of less capacity to the soil. I also think that if the fine wire were installed in a plastic tube, say thin-walled water tubing, the things would work even better. That would put the wire, on average, say a half-inch above ground. I have never tried that design, but maybe I will some day. de K8RYU _______________________________________________ Stew Perry Topband Distance Challenge coming on December 29th.