本协调标准将规定适用于移动地面站（MES）的技术要求，以符合理事会指令98/13/EC第17条。指令98/13/EC第17.6条对根据本协调标准批准的终端没有基本要求，也不能保证卫星地面站设备之间的正确互通。移动地球站（MES）具有以下特点:MES将在低于1 GHz的频率范围内运行，预计将分配给在低于1 GHz的频带内运行的移动卫星数据服务，预计将通过根据ITU无线电条例对移动卫星服务实施ERC决策来协调使用；MES可以是基于MES（BMES）、车载MES（VMES）或便携式MES（PMES）；作为提供低比特率数据通信的网络的一部分，MES通过低地球轨道（LEO）卫星运行； 餐厅由网络控制设施（NCF）控制和监控。NCF不在本协调标准的范围内。应选择本协调标准的要求，以确保与其他无线电服务具有足够的兼容性。本协调标准不包含有关MES安装的任何要求、建议或信息。MES符合本协调标准的要求并不意味着可以使用MES。根据指令98/13/EC第15.2条，此类设备的使用可能需要遵守符合共同体法律的许可条款。

This Harmonised Standard will specify the technical requirements that apply to Mobile Earth Stations (MESs) for compliance with Article 17 of Council Directive 98/13/EC. There are no essential requirements under Article 17.6 of Directive 98/13/EC for terminals approved against this Harmonised Standard, and there is no guarantee of correct interworking between satellite earth station equipment. The Mobile Earth Stations (MESs) have the following characteristics: The MESs will operate in frequency ranges below 1 GHz, which are expected to be allocated to Mobile Satellite Data Services operating in bands below 1 GHz, the use of which is expected to be harmonised through implementation of ERC Decisions accordance with the ITU Radio Regulations to the Mobile Satellite Services; The MESs could be either 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; The MESs are controlled and monitored by a Network Control Facility (NCF). The NCF is outside the scope of this Harmonised Standard. The requirements of this Harmonised Standard shall be selected to ensure an adequate level of compatibility with other radio services. This Harmonised Standard does not contain any requirement, recommendation or information about the installation of the MESs Compliance of a MES to the requirements of this Harmonised Standard does not imply that the MES may be used. In conformity with Article 15.2 of Directive 98/13/EC, the use of such equipment may be subject to licensing terms in conformity with Community law.