RADIO TAPPING DETECTOR

摘要

PURPOSE: A radio tapping detector is provided to prevent a conversation or information tapping by detecting whether the tapping is operating. CONSTITUTION: An antenna(2) receives a radio wave to be tapped and adjusts the sensitivity of the radio wave. An impedance matching and noise preventive unit(10) matches the impedance of the received radio wave and removes noise. A signal detecting and stabilizing unit(11) detects and rectifies the tapped signal. A signal amplifying and comparing unit(12) amplifies the rectified signal and compares the strength of normal frequency with that of tapped frequency. An outputting unit(13) detects the compared signal and displays the tapping state.