ANTENNA EXTENDER FOR WIDE AREA FALLBACK
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2001-Dec-20
Multisite two way radio systems typically use micro- wave links, fiber optic lines or phone lines to transmit voice and data from a central site to all of its remote sites. Failure of these links mean loss of wide area com- munications, which is not acceptable, especially if the users are city or government agencies. There are backup methods which allow limited communications for users to sites that have been isolated by a Iii f&lure. In this case two way communication is limited to subscriber radios within the geographic coverage area of the repeater station for the site. The communication then becomes local to the isolated site. The rest of the system operates in the conventional mode and has wide area coverage because its links are functional. The method described provides wide area communication capability when a remote site loses its link.