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In March 2003, an 18 GHz frequency band became available for public services which use self-managed wireless communication networks. Compared to conventional frequencies for public services, the regulations were greatly eased for this frequency band, so use of these systems rapidly expanded. In recent years, the demand for wireless systems for disaster prevention has increased, and application has become the large flexibility for the user. In order to satisfy such a market demand, JRC developed a multiplex radio communication device (including a backup system).

Kohji Mohri
Shinya Murata
Yuichi Mita
Ryo Kukita
Hiromu Yoshie