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The XS-500 Basic Crystal Radio is a tapped-coil crystal set, designed for those who wish to wind their own coil and for solder or non-solder assembly. Set tunes the AM broadcast band and requires, as usual, an antenna and grounding (antenna wire not included). One-hundred foot wire spools are available via mail order or our web site. We like the assembly flexibility of this set: a bit of a challenge in winding the coil and the alternative for non-solder assembly. This basic kit includes a pre-drilled wood base, pre-drilled PVC coil form, 50 feet of enamel wire, 1N34 detector diode, ear piece, capacitors and a resistor, alligator clips, Fahnestock clips, 6-32 mounting hardware, and manual.