IEC 61097-9:1997
全球海上遇险和安全系统(GMDSS) 第9部分:海上呼叫用电话、数字选择呼叫设备(DSC)和窄带直接打印设备(NBOP)用中频带和高频带船用无线电话发射机和接收机 操作和性能要求、测试方法和要求的测试结果
Global maritime distress and safety system (GMDSS) - Part 9: Shipborne transmitters and receivers for use in the MF and HF bands suitable for telephony, digital selective calling (DSC) and narrow band direct printing (NBDP) - Operational and performance r