ITU Radio Regulations and Space Security Standards
RR Chapter IX: Maritime services – ITU Radio Regulations and Space Security Standards

ITU Radio Regulations and Space Security Standards RR52: RR Article 52: Special rules relating to the use of frequencies (maritime)

What does RR52 require?

Detailed channelling and operating rules for maritime frequencies: general provisions per band (for example, 518 kHz reserved for NAVTEX and 490 kHz and 500 kHz for maritime safety information broadcasts by coast stations; HF maritime bands subdivided per Appendix 17), narrow-band direct printing, digital selective calling (mode of operation, call and acknowledgement, watch, per band), the automatic connection system, wide-band telegraphy and facsimile, radiotelephony (call and reply, traffic, regional provisions) and data transmissions.

Maintained by Gerard BlokdykVerified against the published standard Control text last updated

Other controls in RR Chapter IX: Maritime services – ITU Radio Regulations and Space Security Standards

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