As a convenience to those who have purchased the second book, More Electronic Projects for the Evil Genius, we offer the specialized parts for this project if they cannot be found at your local electronics store:

4.7P - 4.7pfd Silver Mica Zero Temp Coefficient Capacitor
6-35P - 6 to 35 pfd Trimmer Capacitor
COIL8T - Preformed Coil
3.6U - 3.6 uh 1.2 amp Choke
FETMIKE - High Sensitivity Capacitance Microphone
PCXFM - Printed Circuit Board