Technical requirements for micro-power (short-range) radio equipment Technical requirements for micro-power (short-range) radio equipment I. Specific technical indicators (I) General micro-power (short-range) radio transmitting equipment Class A equipment 1. Operating frequency: 9kHz-190kHz Magnetic field strength emission limit |9kHz-50kHz |72dBμA/m (at 10 meters) (quasi-peak) || 50kHz-190kHz |72dBμA/m (at 10 meters) (|| decrease by 3dB per octave) (quasi-peak) | Class B equipment 1. Operating frequency: 1.7-2.1MHz, 2.2-3.0MHz, 3.1-4.1MHz, 4.2-5.6MHz, 5.7-6.2MHz, 7.3-8.3MHz, 8.4-9.9MHz 2. The emitted magnetic field strength is not greater than 9dBμA/m (quasi-peak) at a distance of 10 meters from the equipment. 3. Frequency tolerance: 100×10-6 4.6dB bandwidth is not more than 200kHz Class C equipment 1. Use frequency: 6.765-6.795MHz, 13.553-13.567MHz, 26.957-27.283MHz 2. The emitted magnetic field strength is not more than 42dBμA/m (quasi-peak) at 10 meters away from the device. 3. Frequency tolerance: 100×10-6 4. Stray radiation: For 13.553-13.567MHz frequency band equipment, the limit of the frequency range of 140kHz offset at both ends of the frequency band is 9dBμA/m (at 10 meters, quasi-peak). Class D equipment 1. Use frequency: 315kHz-30MHz range excluding the frequencies of Class A, B, and C equipment mentioned above. 2. The emitted magnetic field strength at a distance of 10 meters from the device: For 315kHz-1MHz: no more than -5dBμA/m (quasi-peak...
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