This standard applies to radio transmitting equipment, including any auxiliary apparatus necessary for its normal operation as defined in IEC Publication 244‑1, operating under the responsibility of skilled personnel. It applies to all radio transmitting equipment and ancillary apparatus, including combining units and matching networks. Only the antenna system and associated feeder lines are excluded.

This standard does not apply to transmitters of safety-insulated construction using double insulation or reinforced insulation and without provision for protective earthing.

This type of equipment is designated “Class II Equipment” in IEC Publication 536 and is usually marked with the symbol shown in Sub-clause C.2.2 of Appendix C.