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Telephone bug circuit diagrams

FM Telephone Bug
FM Telephone Bug
November 11, 2010

Here is a simple transmitter that when connected to a phone line, will transmit anything on that line (execpt the dial tone) to any FM radio. [more]

Spy for Telephone Line
Spy for Telephone Line
April 25, 2010

Spy for Telephone Line [more]

Spy for Two Telephone Lines
Spy for Two Telephone Lines
April 25, 2010

Many times exists the need recording some conversations from a telephone line and this it's relatively easy. [more]