new experimental to operate on frequencies in the 1636.5-1645 MHz and 1535-1543.5 MHz range for emergency communication in the event of an oil spill or other disaster where no other means of communicationexist new experimental to operate on frequencies in the 1636.5-1645 MHz and 1535-1543.5 MHz range for emergency communication in the event of an oil spill or other disaster where no other means of communication exist