Fire Hydrant Marker Repeater

摘要

A system includes a fire hydrant; a gain antenna operatively connected to the fire hydrant; at least one battery operatively connected to the fire hydrant; and a radio repeater operatively connected to the fire hydrant. The gain antenna includes any of a vertical monopole and a dipole antenna. The battery may include a lithium thionyl battery. The battery powers the radio repeater. The radio repeater includes a microprocessor; a memory component; and a radio transceiver. The system may further include a non-metallic enclosure that houses the radio repeater. The gain antenna may be operatively connected to the radio repeater inside the non-metallic enclosure. The radio repeater may further include an electronic voltage reference source that provides a stable voltage reference level that is lower than a lowest battery operating voltage of the at least one battery.