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80 lines
3.2 KiB
Text
80 lines
3.2 KiB
Text
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==Phrack Inc.==
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Volume One, Issue Three, Phile 7 of 10
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***************************************************************
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* *
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* Electronic Eavesdropper *
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* *
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* by *
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* *
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* Circle Lord *
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* *
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***************************************************************
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Have you ever considered buying one of those hi powered microphones often
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seen in eletronics magazines, but thought it was to much to buy and to small to
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card? The circuit shown in this file will provide you with the information to
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build one for a lot less money.
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These audio eavesdropping devices are probably one of the hottest items in
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the underground due to their ability to pick up voices through thick walls.
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You can also attach the speaker wires to a tape recorder and save all the
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conversation. As one can see these are great for blackmailing a teacher,
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classmate, principal, neighbor, or whoever you seek services from...
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Parts list:
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-=EM--------------------------
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M1 Amplifier Module. (Lafayette 99C9037 or equiv.)
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M2 9-VDC battery.
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M3 Microphone
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R1 20K poteniometer with spst switch.
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S1 Spst switch on R1
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SP1 8-ohm speaker
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T1 Audio transformer (Radio Crap part 273-1380)
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Schematics
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+------+--------M1
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1 1 1
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1 1red 1blu
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1 1 1
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1 transformer
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1 1 1
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1 1yel 1grn
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+------+ 1
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1 +-----+ +-----+
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1 1 1 1
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b1 b1 r+M2+b o+S1+o 1
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l1 l1 e1 1l r1 1r 1
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k1 u1 d1 1k g1 1g 1
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********************** 1
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* yel>*-+ ++
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* * R 1
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* M1 * 1-+ 1
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* red>*-+ 1 1
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* * 1<<
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********************** 1
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b1 1g y1 1
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l1 1r e1 1
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k1 1y l1 1
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1 1 +----------+
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+SP1+
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S1 here is on the potentiometer
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M3 can be an earphone earpiece
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---- /
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/ /
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/ /
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/ ircle / ord
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---- ----
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