This part of EN50561 specifies limits and methods of measurement of radio disturbance characteristics for in-home communication apparatus that use the low-voltage power installation as the transmission medium. This part of EN50561 applies to equipment that communicate over this medium in the frequency range 1,6065MHz to 30MHz. NOTE Similar equipment that communicate outside this frequency range is under study and will be covered by another European Standard. Procedures are given for the measurement of signals generated by the equipment and limits are specified for the frequency range 9kHz to 400Ghz. No measurement is required at frequencies where no limit is specified.