The Infinity Bug
The INFINITY BUG is connected across the phone-line of a distant phone (in parallel mode).To use the Bug, the distant phone is rung. After having a conversation with the person at the other end, they will replace the receiver. At this point you whistle into the receiver and the Infinity Bug will pick up the line. The high-gain amplifier in the Infinity Bug will pick up the audio at the place where it is located.[more]
Posted in :
Telephone related projects
