Bill, > I was checking out some resonant capacitors for the Medfer loop tonight on > the bench and found that my faithful silver mica caps aren't so faithful at > 1.7mHz, after all. Some bigger micas designed for transmitting might be better. Might be worth checking some polystyrene caps, as well. I can read down to 0.1 ohm directly with my bridge, and could make some comparisons later this week. John A.