Micro-power (short distance) radio equipment technical requirements

I. Specific Technical Indicators

General Micro-power (short range) radio transmission equipment

A Type Equipment: 1. Using frequency: 9kHz-190kHz - 9kHz-50kHz: 72dBμA/m (10m) (quasi-peak) - 50kHz-190kHz: 72dBμA/m (10m) (per octave down 3dB) (quasi-peak)

B Type Equipment: 1. Using 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 emission intensity of the magnetic field 10 meters away from the device is not more than 9dBμA/m (quasi-peak) 3. Frequency tolerance: 100×10⁻⁶ 4. 6dB bandwidth of less than 200kHz

C Type Equipment: 1. Using frequency: 6.765-6.795MHz, 13.553-13.567MHz, 26.957-27.283MHz 2. The emission intensity of the magnetic field 10 meters away from the device is not more than 42dBμA/m (quasi-peak) 3. Frequency tolerance: 100×10⁻⁶ 4. Spurious Radiation: For 13.553-13.567MHz band equipment, band offset across the frequency range of the limit of 140kHz 9dBμA/m (10m, quasi-peak)

D Type Equipment: 1. Using frequency: 315kHz-30MHz range excluding the A, B, C type equipment frequencies 2. Magnetic field emission intensity 10 meters from the device: - For 315kHz-1MHz: not more than -5dBμA/m (quasi-peak) - For 1MHz-30MHz: not more than -15dBμA/m (quasi-peak)

Wireless Microphone Technical Requirements: - For education, culture, audio-visual training departments, cinemas, concert halls, meeting rooms and other public places - Frequency and transmit power: 1) 87-108MHz: Transmitting power limit 3mW (erp) 2) 75.4-76.0MHz, 84-87MHz: Transmission power limit 10mW (erp) 3) 189.9-223.0MHz: Transmission power limit 10mW (erp) 4) 470-510MHz, 630-787MHz: Transmission power limit 50mW (erp), Occupied bandwidth less than 200kHz