Bug Detector / Detektor prislušnih uređaja 

Parts List:

R1 = 390 ohm, 5%
R2 = 390 ohm, 5%

C1 = 1000uF, 10V
C2 = 1.5uF, 10V
C3 = 3.9nF
C4 = 20pF, trimmer
C5 = 10nF (0.01uF or 103)

IC = 7413 or 74LS13 (2)

Izvor: tonys website