Tesla List wrote: > Original Poster: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net> > > Forget aluminum --- very poor conductor of RF currents. > <snip> How poor is "poor"? I made my RSG using an aluminum ring to connect the electrodes. I haven't used it yet, and it's not too late to make it out of copper, but I'd rather not go through the trouble of machining a balanced ring again it I don't have to. Mark