VLF Receiver

Source: http://www.geocities.com/CapitolHill/8167/vlfdetec.htm

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Parts List Transistors C2 -- 5 Q1-Q2 SK3004 C3, C4 -- 0.02 Resistors (ohms) Miscellaneous R1 -- 430 Loop Antenna -- 200 turns of #25 R2 -- 10k enameled wire in square loop on R3 -- 330k wooden frame. See text for details R4 -- 6.2K Switch -- optional on either side of battery. Capacitors (uF) 9 volt battery C1 -- 10 RCA Jack to output to stereo (optional) The antenna is 200 turns of # 25 enameled wire wrapped in a square over two 48 inch pieces of wood nailed together in an X shape.