new experimental to operate on frequencies in the 1636.5-1645.0 Mhz range for use of INMARSAT system for communication during emergency operations in the event of railroad incidences in remote areas new experimental to operate on frequencies in the 1636.5-1645.0 Mhz range for use of INMARSAT system for communication during emergency operations in the event of railroad incidences in remote areas SYB 2-26-98