This standard specifies the minimum requirements for VHF transmitters and receivers fitted with a 50 Ω external antenna socket or connector for use on board ships and operating in the bands between 156 and 174 MHz allocated to the maritime mobile service by the International Telecommunications Union Radio Regulations (Radio Regulations, Appendices 18 and 19).

• Year of Declaration: 2003
• Reference:
• Number of Pages: 23
• Code: GYS 236
• Version:
• ICS Number: 33.160.20