GB/T 37656-2019 Maritime navigation and radiocommunication equipment and systems—VHF radiotelephone equipment incorporating Class“D”Digital Selective Calling（DSC）—Methods of testing and required test results (English Version)
2019GB/T 37656-2019 Maritime navigation and radiocommunication equipment and systems—VHF radiotelephone equipment incorporating Class“D”Digital Selective Calling（DSC）—Methods of testing and required test results