Spurious emission limits

A table of maximum permitted spurious emission power levels is given in Appendix 3 of the ITU Radio Regulations.

The spurious emission limits are specified in the following reference bandwidths:

frequency interval reference bandwidth
9 kHz – 150 kHz 1 kHz
150 kHz – 30 MHz 10 kHz
30 MHz – 1 GHz 100 kHz
above 1 GHz 1 MHz

For unlicensed short range devices, usually a measurement distance of 3 m is taken.