Administrative Regulations on Radio Waves Article 25

The following circumstances shall be deemed as illegally using radio frequency to interfere with legal radio communications:1. Use equipment of legal radiocommunications system to receive perceivable sounds or images of illegally used radio frequency.2. Use measuring equipment to measure identifiable messages of illegally used radio frequency, which can affect system operations, in the legal radiocommunications system.3. In more than five different points within the transmission radius of the antenna of legal stations (i.e. conform to the “Administrative Regulations on the Establishment of Radio and TV Broadcast Station”), the electric field strength between illegally used radio frequency and legal station exceeds any of the following standards: 34 decibel microvolts per meter for a co-channel; 48 decibel microvolts per meter for a first adjacent channel; 64 decibel microvolts per meter for a second adjacent channel; or 74 decibel microvolts per meter for a third adjacent channel.4. The electric field strength of illegally used radio frequency has been measured using the equipment of competent authority’s fixed monitoring station, where the electric field strength of frequency between 9 kHz and 174 MHz exceeds 80 decibel microvolts per meter, or that of frequency between 174 MHz and 3GHz exceeds 90 decibel microvolts per meter.