ETSI EN 301 025 V2.3.1:2021-12
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VHF radiotelephone equipment for general communications and associated equipment for Class "D" Digital Selective Calling (DSC); Harmonised Standard for access to radio spectrum and for features for emergency services
Hardcopy , PDF
English
01-12-2021
The present document specifies technical characteristics and methods of measurements for VHF radiotelephone with the following characteristics: • operating in the channels and frequencies specified in the ITU Radio Regulations appendix 18 [1] as applicable, allocated to the maritime mobile service; • using either 25 kHz or 25 kHz and 12,5 kHz channels and associated equipment for DSC - class D; • capable of operating on single frequency and two-frequency channels with manual control (simplex); • supporting dual frequency simplex operation only; • using phase modulation, G3E (frequency modulation with pre-emphasis of 6 dB/octave) for speech, and G2B for DSC signalling.
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