scope:

The present document applies to Mobile Earth Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using Low Earth Orbiting (LEO) satellites and which have the following characteristics: - the MES could be a Based MES (BMES), a Vehicle mounted MES (VMES), or a Portable MES (PMES); - the MESs operate through satellites in Low Earth Orbit (LEO) as part of a network providing Low Bit Rate Data Communications (LBRDC); - these radio equipment types are capable of operating in all or any part of the frequency bands given in table 1. Table 1: Frequency ranges MES Transmit frequencies and Service allocations (MHz) MES Receive frequencies and Service allocations (MHz) 148 to 149,9 MSS 137 to 137,025 MSS 149,9 to 150,05 LMSS 137,025 to 137,175 MSS 235 to 322 MSS 137,175 to 137,825 MSS 335,4 to 399,9 MSS 137,825 to 138 MSS 399,9 to 400,05 LMSS 235 to 322 MSS 335,4 to 399,9 MSS 400,15 to 401 MSS The present document is intended to cover the provisions of Directive 2014/53/EU [7] (RE Directive) article 3.2 which states that "….radio equipment shall be so constructed that it both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference". In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of article 3 of the RE Directive [7] may apply to equipment within the scope of the present document. NOTE 1: A list of such ENs is included on the ETSI web site. NOTE 2: The MESs are controlled and monitored by a Network Control Facility (NCF). The NCF is outside the scope of the present document.