Re: "SHORTED TURN" I've made inductance and resonant frequency and Q measurements on several small (3" diameter by 12" to 18" long), and could measure NO effect by putting various toroid terminals on top of them, except for the decrease in frequency (resonant type, that is) caused by the effect of the capacitance added as the terminal was placed close to the coil. In my opinion, "NOT TO WORRY!" Ed Phillips