FM_TELEPHONE_BUG

Published:2009/7/14 2:32:00 Author:May | From:SeekIC

Q1 is an oscillator tuned to a quiet spot in the FM broadcast band. Dc from the line powers the bug. Connect the gray wire to the phone in place of the green wire, and the green wire on the bug to the green line wire. The red wire goes to the red phone line wire. Audio on the line causes incidental FM, which can be heard on an FM receiver tuned to the frequency of the oscillator. Because this device sees the full line voltage, Q2 is a high-voltage PNP MPSA56 transistor.Warning: Use of this device for certain purposes could violate federal and/or state laws and subject the violator to prosecution.



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