A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The user location information is temporarily stored in a quarantine data storage database for a predetermined quarantine time, during such time it can be used for various analysis. A retention area with a tappet passage opening is provided around the armature tappet in a region between the valve cone receiving bore and pole tube. A common filter will have a bandpass that it is smaller than the bandwidth of the ranging signals.