On Fri, 4 Dec 1998, Jochen Feldhaar wrote: > But I reckon this is a simple design, you should experiment a little with > the size and diameter. Anyway, the other end will have to be connected to > ground! Otherwise, the coil of such small dimensions would just be a > capacitor of about 1 pF against the air, and not usable at all. I'm sorry I > forgot to tell you this! You mean of course, a wide-pitched 3 mm coil, yes ? i.e. the pitch is much larger than the wire diameter (about 3 to 4 times larger if I'm not wrong) ? Do you tune the coil by compressing/pulling it or do you just let it be ? thanks, Peter