SRRC CERTIFICATION

Requires of low power equipment

Time:2015-04-09 15:07Article From:SRRC Certification Author:SRRC Certification CTR:

1、specific technical indicators

   General Micro-power (short range) radio transmission equipment

A type equipment

1.Using frequency: 9kHz-190kHz 

Magnetic field strength emission limits
 

 9kHz-50kHz 72dBμA / m (10 m) (quasi-peak)
 50kHz-190kHz  72dBμA / m (10 m) (per octave down 3dB) (quasi-peak)

B type Equipment

1. Using frequency :

1.7-2 .1 MHz ,2.2-3 .0 MHz,

3.1-4.1MHz ,4.2-5 .6 MHz,

5.7-6.2MHz ,7.3-8 .3 MHz,

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 .795 MHz ,13.553-13 .567 MHz,

                            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). 

Frequency tolerance: 100 × 10 -6 

4. Spurious Radiation: For the 13.553-13.567MHz band equipment, band offset across the frequency range of the limit of 140kHz 9dBμA / m (10 m, quasi-peak). 

D type Equipment

1. Using frequency: 315kHz-30MHz range excluding the A, B, C type of equipment outside the frequency. 

2. The emission intensity of the magnetic field 10 meters away from the device:

 For the 315kHz-1MHz: not more than-5dBμA / m (quasi-peak);1MHz-30MHz: not more than -15 dBμA / m (quasi-peak). 

E type equipment

1. Using frequency :40.66-40 .70 MHz 

2. Transmission power limit: 10mW (erp) 

3. Frequency tolerance: 100 × 10 -6 
 

F type equipment

This type of equipment is operating in 2400-2483.5MHz band, in addition to digital cordless phones, Bluetooth devices and wireless LAN equipment, other than short-range radio equipment. 

  1. Frequency :2400-2483 .50 MHz

  1. Transmission power limit: 10mW (eirp)

  1. Frequency tolerance: 75kHz

type equipment

 Using frequency :24.00-24 .25 GHz 

2. Transmit power limit: less than 20mW (eirp) 
 

(2)the Universal Wireless Remote Control Device

Not be used for wireless control toys;

The use of frequency and the local sound, television, the same radio frequency, not in local use;

If the local voice, television broadcast reception interference, they should immediately stop using, to be adjusted to eliminate the interference or the interference-free frequency before reuse. 

1.Frequency :470-566MHz ,614-787MHz 

2.Transmitting power limits: 5mW (erp) 

3.Occupied bandwidth: not more than 1.0MHz 

(3)wireless microphone and civilian radio and other types of equipment, measuring instruments

 For education, culture, audio-visual training departments, cinemas, concert halls, meeting rooms and other public places and people with disabilities use of hearing aids, in the tourist areas, as a small broadcast equipment applications.

Transfer data to meet their working hours the transmitter less than 5 seconds under the conditions ,470-510MHz band can be used as measuring instruments for civil use of radio frequency bands.

The use of frequency and the local sound, television, radio frequencies are the same, shall not be used locally; if the sound on the local television broadcast reception interference, they should immediately stop using, to be adjusted to eliminate the interference or the interference-free frequency before reuse.

To avoid interference of biomedical telemetry equipment, in hospitals, may not use a wireless microphone. Wireless microphone manufacturers to be in the product manual, contain this provision. 

Frequency and transmit power: 

    1. frequency:87-108 MHz
         Transmitting power limits: 3mW (erp) 

2) Frequency :75.4-76 .0 MHz ,84-87MHz 

     Transmission power limit: 10mW (erp) 

    1. Frequency of use :189.9-223 .0 MHz
        Transmission power limit: 10mW (erp) 

4) Frequency :470-510MHz ,630-787MHz 

1.Transmission power limit: 50mW (erp) 

2. Occupied bandwidth: less than 200kHz 

3. Frequency tolerance: 100 × 10 -6 

(4)Biomedical telemetry devices

For the transmission of human or animal physiological phenomenon of radio transmitting equipment, the measured signal is limited to hospitals or medical research institutions use. 

1. Using frequency :174-216MHz ,407-425MHz ,608-630MHz 

2. Transmission power limit: 10mW (erp) 

3. Frequency tolerance: 100 × 10 -6 

 

(5)analog cordless telephone

1. Using frequency: 
 

Channel number  Base transmission frequency (MHz)  Phone transmitting frequency  (MHz)
1 45.000 48.000
2 45.025 48.025
3 45.050 48.050
4 45.075 48.075
5 45.100 48.100
6 45.125 48.125
7 45.150 48.150
8 45.175 48.175
9 45.200 48.200
10 45.225 48.225
11 45.250 48.250
12 45.275 48.275
13 45.300 48.300
1 45.325 48.325
15 45.350 48.350
16 45.375 48.375
17 45.400 48.400
18 45.425 48.425
19 45.450 48.450
20 45.475 48.475

 2. Landline and cell phone transmission power limit: 20mW (erp) 

Maximum Deviation: 5kHz 

4. Occupied bandwidth: less than 16kHz 

5. Frequency tolerance: 1.8kHz 

6. Landline or mobile phone antenna and the connection must be permanently fixed, and its length of not more than 1 meter. 

(6)2.4GHz band digital cordless telephone

1. Using frequency :2400.0-2483 .5 MHz 

2. The mean equivalent to the transmission power limit: 25mW 

3. Frequency tolerance: 20 × 10 -6 

4. Working in 2400.0 ~ 2483.5MHz band frequency-hopping digital cordless phones must work, and the hopping channel is at least 75.

  

  1. Any channel within 1 minute average dwell time is not more than 0.4 seconds.

(7)cranes or machinery for the wireless remote control devices to send 
 

Installation of equipment to carry out electromagnetic environment before testing in order to avoid interference or interference with the normal operation of other similar devices, resulting in production of the accident;

Harmful interference when the subject should immediately stop using, to be adjusted to eliminate the interference or the interference-free frequency before reuse;

Beijing Observatory for the protection of radio astronomy service and Guizhou Province Pingtang radio astronomy service in the two areas within the administrative jurisdiction shall not use the following frequency range of equipment; 

1. Using frequency:

230.700MHz, 223.700MHz, 230.975MHz, 223.975MHz,

231.600MHz, 224.600MHz, 232.325MHz, 225.325MHz,

230.100MHz, 223.100MHz, 232.025MHz, 225.025MHz 

2. Transmission power limit: 20mW (erp) 

3. Occupied bandwidth: less than 16kHz 

4. Frequency tolerance: 4 × 10 -6 
 

(8)industrial wireless remote control device

    

Limited in the industrial buildings (or buildings) to use.

1. Using frequency:

 418.950MHz, 418.975MHz, 419.000MHz, 419.025MHz,

419.050MHz, 419.075MHz, 419.100MHz, 419.125MHz,

419.150MHz, 419.175MHz, 419.200MHz, 419.250MHz,

419.275MHz

2. Transmission power limit: 20mW (erp) 

3. Occupied bandwidth: less than 16kHz 

4. Frequency tolerance: 4 × 10 -6 
 

(9)wireless data transmission equipment

Beijing Observatory for the protection of radio astronomy service and Guizhou Province Pingtang radio astronomy service in the two areas within the administrative jurisdiction shall not use the following frequency range of equipment. 

Limit the use of the building. 

 1. Using frequency:

 228.050MHz, 228.100MHz, 228.200MHz, 228.275MHz,

 228.425MHz, 228.575MHz, 228.600MHz, 228.800MHz,

223.150MHz/230.150MHz, 223.250MHz/230.250MHz

223.275MHz/230.275MHz,224.050MHz/231.050MHz

223.350MHz/230.350MHz,224.250MHz/231.250MHz 

 2. Transmission power limit: 10mW (erp) 

3. Occupied bandwidth: less than 16kHz 

4. Frequency tolerance: 4 × 10 -6 

(10) Electronic Hanging wireless transmission equipment

1. Using frequency and bandwidth: 

1) Frequency: 223.300MHz, 224.900MHz, 230.050MHz, 

233.050MHz,234.050MHz 

Occupied bandwidth: less than 50kHz 

2) Frequency: 450.0125MHz, 450.0625MHz, 450.1125MHz, 

450.1625MHz, 450.2125MHz 

Occupied bandwidth: less than 20kHz 

2. Effective radiated power limit: 50mW (erp) 

Frequency tolerance: 4 × 10 -6 
 

(11) all kinds of consumer devices in the wireless control device

Not be used for wireless control toys, model. 

1. Using frequency: 314-316MHz ,430-432MHz ,433.00-434 .79 MHz 

Transmission power limit: 10mW (erp) 

Occupied bandwidth: less than 400kHz 

 2. Using frequency :779-787MHz, 

Transmission power limit: 10mW (erp) 
 

(12)model, toy radio-controlled devices

Aviation radio wave remote control for model aircraft, surface model boats, model cars and other non-manned ground models, toys, shall not be used for other types of radio equipment. 

1. Using frequency 

26 ~ 27MHz band Sea A / Cars frequency: 

26.975MHz , 26.995MHz, 27.025MHz ,27.045MHz,27.075MHz, 

27.095MHz , 27.125MHz, 27.145MHz ,27.175MHz, 27.195MHz, 

27.225MHz , 27.255MHz 
 

40MHz band Sea A / Cars frequency: 

40.61MHz , 40.63MHz , 40.65MHz , 40.67MHz , 40.69MHz , 

40.71MHz , 40.73MHz , 40.75MHz 
40MHz frequency band blank mode: 

40.77MHz , 40.79MHz , 40.81MHz , 40.83MHz , 40.85MHz

72MHz frequency band blank mode: 

72.13MHz , 72.15MHz , 72.17MHz , 72.19MHz , 72.21MHz , 

72.79MHz , 72.81MHz , 72.83MHz , 72.85MHz , 72.87MHz

2. Transmission power limit: 750 mW (erp) 

3. Occupied bandwidth: 26 ~ 27MHz band in no more than 8kHz 

40MHz and 72MHz frequency bands in the band, not more than 20kHz 

4. Frequency tolerance: in 26 ~ 27MHz band, less than 100 × 10 -6 

72MHz band in band, less than 30 × 10 -6 

 5. Model must be one-way remote controller, set against the model of radio transmitting equipment. 

 6. To ensure aviation radio (station) the requirements of the electromagnetic environment is prohibited by the airport runway as the center of a circle, radius of 5,000 meters in the region, using various models, the remote control. 

7. Model remote control signal is not transmitting voice communications. 

 8. In the state departments of radio control orders issued during the period, the region, should be required to stop using the model of the remote control. 


(13)public radio

Use of public radio, the radio must comply with other relevant regulations. 

1. Using frequency (unit: MHz) 

409.7500;409.7625;409.7750;409.7875;409.8000;409.8125; 

409.8250;409.8375;409.8500;409.8625;409.8750;409.8875; 

409.9000;409.9125;409.9250;409.9375;409.9500;409.9625; 

409.9750;409.9875 

2. Modulation: F3E 

 3. Transmission power limits: 500mW (erp) 

4. Frequency tolerance: 5 × 10 -6 

5. Channel Spacing: 12.5kHz 

(14)Vehicle Range Radar

 1. Using frequency :76-77GHz 

2. Peak equivalent isotropic radiated power limits: 55dBm 

 

2、Second, General Requirements

1. Spurious radiated emission measurement frequency range:
 

Operating frequency range  Spurious radiation measurement frequency range
 Lower limit  Limit
9kHz~100MHz 9kHz 1GHz
100MHz~600MHz 30MHz 10 harmonics
600MHz~2.5GHz 30MHz 12.75GHz
2.5~13GHz 30MHz 26GHz
1More than 13GHz 30MHz  2 harmonics

2. Stray radiation emissions (spurious radiation and radiation-band carrier frequency cutoff point of ± 2.5 times the channel bandwidth);

2.1 The state of the transmitter to the maximum power transmission
 

Frequency Range Test bandwidth Limits  Rectification
9kHz~150kHz 200Hz(6dB) 27dBμA / m (10 m) (per octave / down 3dB) Quasi-peak
150kHz~10MHz 9kHz(6dB)  Quasi-peak
10MHz~30MHz 9kHz(6dB) -3.5dBμA / m (10 m)  Quasi-peak
30MHz~1GHz 100kHz(3dB) -36dBm  RMS
1GHz~40GHz 1MHz(3dB) -30dBm RMS
>40GHz 1MHz(3dB) -20dBm  RMS

 2.2 Transmitter standby or idle state
 

Frequency Range Test bandwidth Limits Rectification
9kHz ~ 150kHz 200Hz(6dB) 6dB μ A / m (10  ) (per octave down 3dB) Quasi-peak
150kHz ~ 10MHz 9kHz(6dB)
10MHz ~ 30MHz 9kHz(6dB) - -24.5dB μ A / m (10 m) Quasi-peak
30MHz ~ 1GHz 3 100kHz(3dB) -47dBm RMS
>1GHz 1MHz(3dB)

Note: The field test site using the open field, the radiation power of the test site using the fully anechoic chamber.

30MHz operating frequency in the following equipment, emission state can be set to single-carrier emission.

If specific technical indicators are inconsistent with the general requirements, then use the appropriate value of the specific technical indicators.

3.48.5MHz-72.5MHz,76MHz-108MHz,167MHz-223MHz,470MHz-566MHz,

606MHz-798MHz frequency range of the stray radiation is not greater than-54dBm.

4. The power ports, signal ports and telecommunication ports conducted disturbance emission according to GB9254-2008 standards.

5. For more than 30MHz frequency band in the range specified at the upper and lower limits of radiation power less than -80dBm/Hz (eirp). Bands below 30MHz, the occupier of any work the channel bandwidth (99% of energy) corresponds to the upper and lower limits can not exceed the specified frequency range.

6. Micro-power (short range) radio equipment, the equipment manufacturer shall declare the limits of normal use, environmental conditions, conditions in the transmit power and frequency tolerance indicators should meet the requirements.