"Radio Equipment and Systems (RES); Technical Characteristics and Methods of Measurement for VHF Radiotelephone Equipment for General Communications and Associated Equipment for Class ""D"" Digital Selective Calling (DSC) (V1.1.1)"
The present document covers the minimum requirements for general communication for shipborne fixed installations using a VHF radiotelephone operating in certain frequency bands 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. These requirements include the relevant provisions of the ITU Radio Regulations@ appendix 18 [1]@ Recommendations ITU-R M.493-13 [3] (where class D is defined)@ M.825-3 [i.5] and incorporate the relevant guidelines of the IMO as detailed in IMO Circular MSC/Circ-803 [i.2]. The present document also specifies technical characteristics@ methods of measurement and required test results.