ITU-R M.489-2 Technical No e-Nav related N/A SAR characteristics of VHF comms change is radiotelephone anticipated for the use equipment operating in of 121.5 MHz for short the maritime mobile range SAR purposes. service in channels However, were the VHF spaced by 25 kHz channels to be revised the SAR associated characteristic (M.489) would in any event be updated. HF Voice ITU-R M.1173-1 Technical No e-Nav related N/A characteristics of comms change is single-sideband envisaged for HF voice transmitters used in the services. However, if maritime mobile there is a broad service for encroachment of digital radiotelephony in the techniques into the bands between 1 606.5 band there may be a kHz (1 605 kHz Region need to revise existing 2) and 4 000 kHz and voice characteristics to between 4 000 kHz accommodate data. and 27 500 kHz ITU-R M.1082-1 International maritime MF/HF radiotelephone system with automatic facilities based on DSC signaling format ITU-R M.1081-1 Data Automatic HF facsimile WRC-12 decided and data system for channeling maritime mobile users arrangements in AP17, effecting on 1 January 2017 for the implementation of HF data communications.
SAR ITU-R M.489-2 Technical characteristics of VHF radiotelephone equipment operating in the maritime mobile service in channels spaced by 25 kHz No e-Nav related comms change is anticipated for the use of 121.5 MHz for short range SAR purposes. However, were the VHF channels to be revised the SAR associated characteristic (M.489) would in any event be updated. N/A HF Voice ITU-R M.1173-1 Technical characteristics of single-sideband transmitters used in the maritime mobile service for radiotelephony in the bands between 1 606.5 kHz (1 605 kHz Region 2) and 4 000 kHz and between 4 000 kHz and 27 500 kHz No e-Nav related comms change is envisaged for HF voice services. However, if there is a broad encroachment of digital techniques into the band there may be a need to revise existing voice characteristics to accommodate data. N/A ITU-R M.1082-1 International maritime MF/HF radiotelephone system with automatic facilities based on DSC signaling format Data ITU-R M.1081-1 Automatic HF facsimile and data system for maritime mobile users WRC-12 decided channeling arrangements in AP17, effecting on 1 January 2017 for the implementation of HF data communications.
e-NAV14-10.3.6%20Brest%20Output%2005%20-%20IALA%20input%20to%20ITU%20for%20MRCP%20Working%20Doc%20(rev2)[1].docx