Weekend Projects - Covert Listening Book
Complete instructions for this episode of Weekend Projects can be found at
Connect an amplified listener with an in-car FM transmitter, and you've got a wireless bug. Place the circuit in a hollowed-out book with the microphone concealed by the dust cover, and you've got a super-sneaky covert listening device! Tune in via a FM radio receiver set to the correct frequency, and you'll be able to hear through walls.
Connect an amplified listener with an in-car FM transmitter, and you've got a wireless bug. Place the circuit in a hollowed-out book with the microphone concealed by the dust cover, and you've got a super-sneaky covert listening device! Tune in via a FM radio receiver set to the correct frequency, and you'll be able to hear through walls.
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