ČSN ETSI EN 301 025 V2.3.1   (875090) Radiotelefonní zařízení VHF pro obecnou komunikaci a přidružená zařízení třídy ˝D˝ s digitálním selektivním voláním (DSC) - Harmonizovaná norma pro přístup k rádiovému spektru a funkcí pro tísňové služby

Anotace textu normy ČSN ETSI EN 301 025 V2.3.1   (875090)

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.

Full duplex operation is not supported.

The present document does not provide technical requirements for conformance with the essential requirements of Directive 2014/53/EU [i.3] for any integrated GNSS receiver providing locating function.

NOTE 1 - Additional VHF channels for maritime use outside those defined by appendix 18 to the ITU Radio Regulations [1] may also be provided where permitted by administration.

NOTE 2 - The relationship between the present document and essential requirements of article 3.2 and article 3.3(g) of Directive 2014/53/EU [i.3] is given in annex A.