A communication interfering object presence detection sensor, for use with an antenna system, which initiates an alarm signal whenever a communication interfering object presence is detected by said antenna sensor for a predetermined time within proximity of said antenna.The object presence detection sensor generates an optical, RF, ultrasonic or magnetic field signal(s) around an antenna towards a preset distance from the antenna, generating antenna operation protective shield signal(s) around said antenna.Communication interfering object presence detection sensor of the present invention is responsive to the detection of object(s) presence within the pattern of said sensor-generated signals.The object detection sensor antenna of the present invention additionally transmits said alarm signals to a monitoring station containing information to both said antenna tamper condition and to said antenna location.And the communication interfering object detection sensor antenna of the present invention is capable of sending signal(s) to immobilize a vehicle upon detection of a communication interfering object presence within the pattern of object detection signal(s).

 
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