DS EN 300330:2004 Electromagnetic Compatibility And Radio Spectrum Matters (Erm) - Short Range Devices (Srd) - Technical Characteristics And Test Methods For Radio Equipment In The Frequency Range 9 Khz To 25 Mhz And Inductive Loop Systems In The Frequency Range 9 Khz To 30 Mhz Covers the frequency band 9 kHz to 25 MHz for radio equipment and 9 kHz to 30 MHz for inductive loop systems, which may be superseded by specific standards covering specific applications.