scope:

This standard states the minimum requirements for radiotelex equipment¹⁾ for use on board ships. These requirements include the relevant provisions of the Radio Regulations and the performance standards for shipborne MF/HF radio installations for Narrow Band Direct Printing (NBDP) equipment operating in the Global Maritime Distress and Safety System (GMDSS), and of the performance standards Res. A 569(14) and Res. A 613(15) as adopted by the International Maritime Organization (IMO).

Annex VI of CEPT Recommendation T/R 34-01, CCIR Recommendation 625, 490, 491-1 and CCITT Recommendation F 130 are regarded as a constituent part of this standard.

Maritime radiotelex equipment shall use the error-detecting and correcting system used for direct-printing telegraphy in the maritime mobile service as described in CCIR Recommendation 625.

Maritime radiotelex equipment may consist of integrated equipment or of a combination of a maritime mobile transmitter/receiver and external NBDP equipment. Where such a combination is used the requirements for integrated equipment shall apply to that combination.

If the equipment, or parts of it, is designed in such a manner that it can also be used for other categories of maritime radio communication (e.g. radiotelephony), the relevant parts of the equipment shall furthermore fulfil the requirements of the relevant standards applicable for the service(s) in question.

¹⁾ For the purposes of this standard, radiotelex equipment is defined as direct-printing telegraph equipment employing automatic identification and error correction in the maritime mobile MF/HF radio service.