ETSI ETS 300 225-1997 Radio Equipment and Systems (RES); Technical Characteristics and Methods of Measurement for Survival Craft Portable VHF Radiotelephone Apparatus Second Edition
1998ETSI ETS 300 225-1998 Radio Equipment and Systems (RES); Technical Characteristics and Methods of Measurement for Survival Craft Portable VHF Radiotelephone Apparatus Third Edition
1997ETSI ETS 300 225-1997 Radio Equipment and Systems (RES); Technical Characteristics and Methods of Measurement for Survival Craft Portable VHF Radiotelephone Apparatus Second Edition