scope:

This European Telecommunications Standard (ETS) provides ElectroMagnetic Compatibility (EMC) specifications for the standardization of Receive only Mobile Earth Stations (ROMES). Specifications relating to emissions from the antenna port and emissions from the enclosure port of the ROMES (figure 1) are not included in this ETS. Specifications for emissions from the antenna port and from the enclosure port of the ROMESs are included in ETS 300 487 [15].

The ETS applies to ROMESs which operate in the Land Mobile Satellite Service (LMSS) space to earth bands, 1 525 MHz to 1 544 MHz and 1 555 MHz to 1 559 MHz, allocated by the ITU Radio Regulations [1]. The ROMESs operate as part of a satellite system providing one way data communications.

ROMESs can have several configurations, including:

- portable equipment;

- fixed equipment;

- a number of modules including a display/control interface to the user.

The ETS specifies the applicable EMC tests, their method of measurement, the limits and the minimum performance criteria for ROMESs. The performance criteria used in this ETS requires that the satellite communications system of which the ROMES is a part provides reliable delivery of data or messages.

The environment classification used in this ETS refers to the environment classification used in Generic Standards EN 50081-1 [2] and EN 50082-1 [3].

The EMC requirements have been selected to ensure an adequate level of compatibility for apparatus in residential, commercial and light industrial environments. The levels however do not cover extreme cases which may occur in any location but with a low probability of occurrence.

The ETS may not cover those cases where a potential source of interference which is producing individually repeated transient phenomena or a continuous phenomena is permanently present, e.g. a radar or broadcast site in the near vicinity. In such a case it may be necessary to use special protection applied to either the source of interference or the interfered part or both.

Compliance of radio equipment to the requirements of the ETS does not signify compliance to any requirements related to spectrum management or any licensing requirement related to the use of the equipment.

Compliance to the ets does not signify compliance to any safety requirements. However, it is the responsibility of the assessor of the equipment to ensure that any observation regarding the equipment becoming dangerous or unsafe as a result of the application of the tests of the ETS should be recorded.

In addition to the technical specifications of this ETS, there may be published in the Official Journal of the European Community references to other Harmonized EMC standards that apply to the products covered by the ETS in their own right.

The ETS is based on the considerations and guidance given in ETR 238.