Mobile Phone Sniffer

Mobile Phone Sniffer

Design by B. Kainka

Track down mobile phones using this handy directional finder






Part list
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R1,R5       100k
R2,R6       220 - 1k
R3,R7       820k - 8M
R4,R8       220
R9          2k2

C1,C2,C3    100nF
C4          100uF/16V
D1,D2       BAT43, BAT45, AA112, AA116, AA119
D3          LED
IC1         LM358
S1          SPST on/off switch
Antennas    2 wire pieces, length 3 to 7.5cm each (see text).

L1,L2       10 turns of 0.3-0.5mm diameter enamelled copper wire, wound on 5mm drill bit
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http://www.elektor-electronics.co.uk/magazines/2002/may/mobile-phone-sniffer.55700.lynkx
http://electroschematics.com/381/mobile-phone-sniffer-gsm-telephone-detector/