Nội dung toàn văn Circular 08/2021/TT-BTTTT Prescribing list of license exempt radio devices
MINISTRY OF INFORMATION AND COMMUNICATIONS | SOCIALIST REPUBLIC OF VIET NAM |
No.: 08/2021/TT-BTTTT | Hanoi, October 14, 2021 |
CIRCULAR
PRESCRIBING LIST OF LICENSE-EXEMPT RADIO DEVICES AND ACCOMPANYING TECHNICAL AND OPERATIONAL CONDITIONS
Pursuant to the Law on radio frequency dated November 23, 2009;
Pursuant to the Government’s Decree No. 17/2017/ND-CP dated February 17, 2017 defining functions, tasks, powers and organizational structure of the Ministry of Information and Communications;
Pursuant to the Decision No. 71/2013/QD-TTg dated November 21, 2013 by the Prime Minister promulgating the Plan for national radio spectrum as amended by the Decision No. 02/2017/QD-TTg dated January 17, 2017 by the Prime Minister;
At the request of the Director of the Authority of Radio Frequency Management,
The Minister of Information and Communications promulgates a Circular prescribing list of license-exempt radio devices and accompanying technical and operational conditions.
Article 1. Scope and regulated entities
1. This Circular provides regulations on the list of license-exempt radio devices and accompanying technical and operational conditions.
2. This Circular applies to organizations and individuals that manage, use, produce, import or trade the radio devices exempt specified in Clause 1 of this Article in Vietnam.
3. This Circular does not apply to the radio devices which are produced, imported and used for serving the performance of national defense and security duties of armed forces. The production, import and use of these radio devices shall be subject to regulations adopted by the Ministry of National Defence or the Ministry of Public Security in conformity with corresponding national technical regulations.
Article 2. Definitions
For the purposes of this Circular, the terms below are construed as follows:
1. “Short Range Device” means a radio transmitter or a radio transceiver that has low capability of causing harmful interference to other radio equipment when meeting certain technical and operational conditions.
2. “Non-Specific Short Range Device” means a Short Range Device meeting all of technical and operational conditions as prescribed, regardless of their applications or uses.
3. “Cordless Phone” means a terminal telephonic apparatus that is connected to the public switched telephone network through two-wire analog interface. This device consists of a base unit and a mobile unit connected to each other by means of radio link:
The base unit (also called as the base station) is located at a fixed place and connected to two fixed telephone lines of the PSTN (Public Switched Telephone Network) using an integrated antenna. The integrated antenna is fixed inside or outside the base unit as its part.
The mobile unit (also called as the portable station) is a handset using integrated antenna. The mobile unit shall have the same subscriber number with the base unit.
4. Medical Implant Communications Systems (MICS) and Medical Implant Telemetry Systems (MITS)
Medical Implant Communications Systems (MICS) and Medical Implant Telemetry Systems (MITS) mean the systems consisting of an implantable medical device placed in the human body and a radio communication device outside the body to communicate data with the implantable device in a distance around 02 meters; received data shall be transmitted to the data processing center and doctors by means of telecommunication network.
MICS provides two-way communications between an implantable device and a radio communication device. MITS provides one-way communications from an implantable device to a radio communication device at pre-programmed times.
5. Radio Frequency Identification (RFID)
RFID uses the radio waves to automatically identify, manage and track goods, people and animals and have other applications.
RFID consists of a Radio Frequency tag and a Radio Frequency Reader which are connected to each other through the radio interface as follows:
- Radio Frequency tag (RF tag) has an electronic chip, with or without power source, and is attached to the object to be identified. The electronic chip contains information about the object to be identified.
- The Radio Frequency Reader (RF reader) generates signal at a determined frequency to activate the RF tag and read its response. The RF reader shall transmit the information received from the RF tag to the data processing system.
RFID has many applications in the fields of distribution, transportation and retailing, healthcare services, traffic or is used in mobile applications.
6. Radio Detection and Alarm Device
Radio Detection and Alarm Device consists of a sensor and a control system which are connected to each other by means of radio interface.
Anti-theft device, motion detector and metal detector are certain types of Radio Detection and Alarm Devices.
7. Wireless Audio Device
Wireless Audio Device means a device that uses radio waves to transmit sound in a short distance. There are typical types of Wireless Audio Devices such as wireless lavalier microphone, wireless handset microphone, wireless earphones, personal FM transmitter and hearing aids.
Short-range wireless audio devices prescribed in this Circular exclude wireless audio transmitters using the 470-694 MHz frequency band, with the effective radiated power above 30 mW ERP, used in radio and television sector.
8. Remote Control Device
Remote Control Devices are devices using radio waves to control models and have other control applications in industrial and civil sectors.
Typical types of remote control devices: remote control devices for models in the air such as model airplanes, remote control devices for models on land and water surface such model cars and model ships, remote control devices in industrial and civil sectors such as remote car door openers and remote garage door openers.
9. Wireless Local Area Network (WLAN) or Radio Local Area Network (RLAN)
WLAN/RLAN is used to set up the radio local area network or enable users to connect all devices wirelessly.
Typical types of WLAN/RLAN devices: access point, Wi-Fi router, Wi-Fi card, integrated radio receiver-transmitter modules according to IEEE 802.11 and IEEE 802.15.4 specifications (excluding wireless bridges); WLAN/RLAN devices using LTE (Long Term Evolution) technology.
10. Telemetry Device
Telemetry Device means a device using radio waves to automatically display or record remotely measured parameters and control functions of other devices by means of radio interface. Telemetry Devices prescribed in this Circular also include short-range radar transceivers used for measuring levels of substances (liquids, adhesives, glues) in closed tanks or on site to serve industrial and production activities.
11. Wireless Video Transmitter
Wireless Video Transmitter is used to send image data (or image and sound data) to the processing system through the radio interface.
Typical types of wireless video transmitters are wireless webcam, wireless camera and wireless video transmitters through computer USB port.
12. Radio devices placed on fishing vessels
Radio devices placed on fishing vessels are used to facilitate communications between fishing vessels operating within the territorial waters of Vietnam.
13. Receive-only radio device is a radio device that has the function to receive radio wave signals only.
14. Automotive Radar, Radar sensor or Road Transport and Traffic Telematics is a short-range radar device that is used in traffic communication applications (road or railway) such as cruise control, detection, warning and avoidance of collisions between vehicles and surrounding objects.
15. Low-power handie-talkies are portable radio terminal devices functioned to receive and transmit speech signals within a limited area (e.g. building, campus of a restaurant or hotel).
16. Ultra Wide Band Device (UWB) is a short-range radio device that is used to transmit data and radio-frequency energy that spreads over a very large frequency range (a -10 dB bandwidth, sign B-10, of at least 500 MHz, or a -10 dB fractional bandwidth, sign U-10, greater than 0,2). The bandwidth B-10 and fractional bandwidth U-10 are calculated as follows:
B-10 = fH - fL (where: fH is highest frequency and fL is the lowest frequency. At these frequencies, the power spectral density of the UWB transmission is -10 dB relative to fM);
U-10 = B-10/fc (fc is the centre frequency of the -10 dB bandwidth, and fc = (fH + fL)/2).
17. Inductive Loop is a short-range radio device operating according to electromagnetic field theory (radiative near field) and using low frequency.
18. Automatic Identification System (AIS) means a radio device used in maritime safety systems on vessels/ships and other motorised or non-motorised vehicles with the aims of avoiding collisions and managing surface or underwater vehicles.
19. Emergency Position Indicating Radio Beacon (EPIRB) means a radio device that is used to locate emergency cases in the 406-406.1 MHz frequency band and placed on surface or underwater vehicles such as vessels/ships and other motorised or non-motorised vehicles.
20. Search and Rescue Radar Transponder (SART) means a radio device intended for marine search and rescue operations in the 9 GHz frequency band.
21. AIS Search and Rescue Transmitter (AIS-SART) means a radio device in the group of marine supporting devices used for supporting search and rescue agencies in locating survival equipment or distressed vessels.
22. Emergency Locator Transmitter (ELT) means a device that transmits a distress signal on the 406 MHz frequency and is designed for use in aircrafts.
23. Personal Locator Beacon (PLB) means a device that transmits signal of the location of radio wave user on the 406 MHz frequency, and is designed for vehicles and human on land.
24. Low Power Wide Area Network (LPWAN) consists of sensors and devices transmitting and receiving sensor data which are connected to each other by means of radio interface, and use the spectrum shared with other short-range radio devices. The LPWAN devices prescribed in this Circular exclude those using the frequency bands granted license to use radio frequencies according to radio frequency planning (e.g.: LPWAN devices using NB-IoT, LTE-M…).
25. Wireless Power Transfer (WPT) means a radio device that transmits electrical energy and signal from a power source to a receiver device according to electromagnetic induction theory.
26. ERP means Effective Radiated Power.
27. EIRP means Equivalent Isotropically Radiated Power.
28. ERPEP means Effective Radiated Peak Envelope Power.
Article 3. List of license-exempt radio devices and accompanying technical and operational conditions
1. The list of license-exempt radio devices (hereinafter referred to as the “List”) is provided in Appendix 1 enclosed herewith.
2. Technical and operational conditions applied to license-exempt radio devices are provided for in Appendix 2-20 enclosed herewith.
Article 4. Conditions for exemption from radio frequency licensing
The use of a radio device shall be exempted from radio frequency licensing requirements if all of the following conditions are satisfied:
a) The radio device is included in the List provided in Appendix 1 enclosed herewith;
b) It meets the general requirements laid down in Article 6 of this Circular;
c) It meets corresponding technical and operation conditions specified in Appendix 2-20 enclosed herewith.
Article 5. Management and use of radio devices which are included the List but do not meet accompanying technical and operational conditions
The radio devices which are included in the List provided in Appendix 1 enclosed herewith but do not meet accompanying technical and operation conditions provided in Appendix 2-20 enclosed herewith shall not be used in Vietnam, except the following devices which may be used under the license to use radio frequency and radio devices:
1. RFID operating in the 920-923 MHz frequency band and used for non-stop electronic toll collection stations with a radiated power above 500 mW ERP to 2000 mW ERP.
2. LPWAN devices operating in the 433,05-434,79 MHz frequency band with a radiated power above 25 mW ERP to 100 mW ERP and those operating in the 920-923 MHz frequency band with a radiated power above 25 mW ERP to 306 mW ERP.
3. Radio devices placed on fishing vessels operating on the frequencies outside the 26,96-27,41 MHz frequency band under the radio frequency planning.
4. Radio terminal devices used for safety and rescue purposes and operating on the frequencies prescribed by the international organizations to which Vietnam is a signatory or prescribed in the frequency use planning but not prescribed in this Circular.
Article 6. General requirements
1. License-exempt radio devices used for emergency, safety, search and rescue shall be protected from harmful interference as prescribed by law when they operate in the frequency channels or bands specified in Appendix 20 enclosed herewith. The use of license-exempt radio devices in other cases may tolerate harmful interference caused by radio devices licensed to use radio frequency and those licensed to operate by competent authorities.
2. In case a license-exempt radio device causes harmful interference to the radio devices licensed to use radio frequency or those licensed to operate by competent authorities, the operation of that license-exempt device must be immediately suspended and may be resumed only when interference problems are successfully remedied.
3. License-exempt radio devices must accept harmful interference caused by devices using radio frequency for industrial, scientific and medical (ISM) purposes when they share the following ISM frequency bands:
a) Frequency band 13,553 ÷ 13,567 MHz;
b) Frequency band 26,957 ÷ 27,283 MHz;
c) Frequency band 40,66 ÷ 40,70 MHz;
d) Frequency band 2400 ÷ 2483,5 MHz;
dd) Frequency band 5725 ÷ 5875 MHz;
e) Frequency band 24000 ÷ 24250 MHz.
4. Organizations and individuals may only use, manufacture or import short range devices which can operate at different radiated powers or different frequency bands or in a wide operating frequency range for use in Vietnam when parameters, including operating frequency and radiated power, of these devices are set up in accordance with regulations of this Circular.
5. Operators/users of license-exempt radio devices with integrated remote control in model airplanes must strictly comply with regulations of law on licensing for flight activities.
6. Users of receive-only radio devices exempted from radio frequency licensing must strictly comply with regulations of laws on telecommunications and radio frequency and other relevant laws.
Article 7. Transition
Radio devices in use that meet the requirements laid down in the Circular No. 46/2016/TT-BTTTT dated December 26, 2016 of the Minister of Information and Communications, as amended in the Circular No. 18/2018/TT-BTTTT dated December 20, 2018 of the Minister of Information and Communications but do not satisfy the requirements laid down in this Circular may continue to be used provided that such use must be stopped immediately when they are determined by radio frequency authorities to have caused harmful interference to radio devices licensed to use radio frequency or those licensed to operate by competent authorities.
Article 8. Implementation
1. This Circular comes into force from November 28, 2021 and supersedes the following documents:
a) Circular No. 46/2016/TT-BTTTT dated December 26, 2016 of the Minister of Information and Communications.
b) Circular No. 18/2018/TT-BTTTT dated December 20, 2018 of the Minister of Information and Communications.
2. Chief of Ministry’s Office, Director of the Authority of Radio Frequency Management, heads of affiliates of Ministry of Information and Communications, and relevant organizations and individuals shall implement this Circular./.
| MINISTER |
APPENDIX 1
LIST OF LICENSE-EXEMPT RADIO DEVICES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communications)
No. | Type of radio devices | Appendixes providing frequency, technical and operational conditions |
1 | Group of short-range devices | |
1.1 | Non-Specific Short Range Device | Appendix 2, Appendix 3 |
1.2 | Cordless phone | Appendix 2, Appendix 4 |
1.3 | Medical Implant Communications Systems (MICS) and Medical Implant Telemetry Systems (MITS) | Appendix 2, Appendix 5 |
1.4 | Radio Frequency Identification (RFID) | Appendix 2, Appendix 6 |
1.5 | Radio Detection and Alarm Device | Appendix 2, Appendix 7 |
1.6 | Wireless Audio Device | Appendix 2, Appendix 8 |
1.7 | Remote control device | Appendix 2, Appendix 9 |
1.8 | Wireless Local Area Network (WLAN) or Radio Local Area Network (RLAN) | Appendix 2, Appendix 10 |
1.9 | Telemetry Device | Appendix 2, Appendix 11 |
1.10 | Wireless Video Transmitter | Appendix 2, Appendix 12 |
1.11 | Ultra Wide Band Device (UWB) | Appendix 2, Appendix 13 |
1.12 | Short-range radio devices used in traffic sector | Appendix 2, Appendix 14 |
1.13 | Inductive Loop | Appendix 2, Appendix 15 |
1.14 | Wireless Power Transfer (WPT) | Appendix 2, Appendix 16 |
2 | Radio devices placed on fishing vessels | Appendix 2, Appendix 17 |
3 | Low-power handie-talkies | Appendix 2, Appendix 18 |
4 | Low Power Wide Area Network (LPWAN) | Appendix 2, Appendix 19 |
5 | Radio terminal devices used for safety and rescue purposes | Appendix 2, Appendix 20 Appendix 2, Appendix 20 |
5.1 | Automatic Identification System (AIS) | |
5.2 | Emergency Position Indicating Radio Beacon (EPIRB) | |
5.3 | Search and Rescue Radar Transponder (SART) | |
5.4 | AIS Search and Rescue Radar Transponder (AIS-SART) | |
5.5 | Emergency Locator Transmitter (ELT) | |
5.6 | Personal Locator Beacon (PLB) | |
6 | Receive-only radio device (Note 1) |
|
Note 1:
Receive-only radio device is included in the List of license-exempt radio devices. Users of receive-only radio devices exempted from radio frequency licensing must strictly comply with regulations of laws on telecommunications and radio frequency and other relevant laws, and shall not be allowed to use the received information for illegal purposes.
If users of the following types of receive-only radio devices want to protect their devices from harmful interference, they are required to follow procedures for license to use radio frequency in accordance with guidelines on procedures for issuance of license to use radio frequency, leasing and lending of radio devices, and shared use of radio frequency provided by the Ministry of Information and Communications:
a) Television Receive Only (TVRO). Operators/users of TVRO stations shall comply with regulations of law on telecommunications, press, radio and television broadcasting;
b) Earth Exploration Satellite Service (EESS).
APPENDIX 2
FREQUENCY CONDITIONS AND EMISSION LIMITS APPLIED TO LICENSE-EXEMPT RADIO DEVICES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communications)
1. Frequency conditions and emission limits include the following contents:
Frequency band: stipulate limits on operating frequency ranges of devices.
Type of radio devices: stipulate name of the licensed radio device or application which is included in the List provided in Appendix 1 enclosed herewith.
Main emission: stipulate the maximum limit on the field strength or the power of the main emission expressed in the form of Effective Radiated Power (ERP) or Effective Radiated Peak Envelope Power (ERPEP) or Equivalent Isotropically Radiated Power (EIRP) (except SART: stipulate minimum radiated power).
Spurious emission or unwanted emission: stipulate maximum limit on power of spurious emission, out-of-band emission or minimum limit on emission depletion compared to the main emission.
No. | FREQUENCY BAND | TYPE OF RADIO DEVICES | MAIN EMISSION | SPURIOUS EMISSION OR UNWANTED EMISSION |
| A | B | C | D |
1. | 9 ÷ 100 kHz | Inductive Loop | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
2. | 100 ÷ 119 kHz | Inductive Loop | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
Wireless Power Transfer (WPT) | ||||
3. | 119 ÷ 135 kHz | Inductive Loop | ≤ 66 dBµA/m measured at 10m distance (reduced by 10 dB/decade at the frequency above 119 kHz) | According to spurious emission limit 1 |
Wireless Power Transfer (WPT) | ||||
4. | 135 ÷ 140 kHz | Inductive Loop | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
Wireless Power Transfer (WPT) | ||||
5. | 140 ÷ 148,5 kHz | Inductive Loop | ≤ 37,7 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
Wireless Power Transfer (WPT) | ||||
6. | 148,5 ÷ 190 kHz | Inductive Loop (used in medical sector) | ≤ 30 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
Inductive Loop | ≤ -15 dBµA/m measured at 10m distance (in the 10 kHz bandwidth) | According to spurious emission limit 1 | ||
Wireless Power Transfer (WPT) | ||||
7. | 115 ÷ 150 kHz | Radio Frequency Identification (RFID) | ≤ 66 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
8. | 326,5 kHz 340 kHz | Wireless Power Transfer (WPT) | ≤ -15 dBµA/m measured at 10m distance (in the 10 kHz bandwidth) | According to spurious emission limit 1 |
9. | 353 ÷ 373,5 kHz | Wireless Power Transfer (WPT) | ≤ -15 dBµA/m measured at 10m distance (in the 10 kHz bandwidth) | According to spurious emission limit 1 |
10. | 1,64 ÷ 1,8 MHz | Wireless Power Transfer (WPT) | ≤ -15 dBµA/m measured at 10m distance (in the 10 kHz bandwidth) | According to spurious emission limit 1 |
11. | 3,155 ÷ 3,400 MHz | Inductive Loop | ≤ 13,5 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
12. | 3,234 ÷ 5,234 MHz | Short-range radio devices used in traffic sector (railway) | ≤ 9 dBµA/m measured at 10m distance | According to unwanted emission limit 2 |
13. | 6,765 ÷ 6,795 MHz | Inductive Loop | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
Wireless Power Transfer (WPT) | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 | ||
14. | 10,2 ÷ 11 MHz | Inductive Loop | ≤ 9 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
15. | 13,553 ÷ 13,567 MHz | Inductive Loop | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
Radio Frequency Identification (RFID) | ≤ 60 dBµA/m measured at 10m distance | According to spurious emission limit 1 | ||
Non-Specific Short Range Device | ≤ 4,5 mW ERP | According to spurious emission limit 1 | ||
16. | 26,957 ÷ 27,283 MHz | Remote control device | ≤ 100 mW ERP | According to spurious emission limit 3 |
Telemetry Device | ||||
Non-Specific Short Range Device | ||||
Short-range radio devices used in traffic sector (railway) | ≤ 42 dBµA/m measured at 10m distance | According to unwanted emission limit 2 | ||
17. | 26,96 ÷ 27,41 MHz | Radio devices placed on fishing vessels | ≤ 12 W ERP (single-sideband amplitude modulation: AM/SSB) | According to spurious emission limit 4 |
≤ 4 W ERP (double-sideband amplitude modulation: AM/DSB, or angle modulation: frequency modulation and phase modulation (FM/PM)) | ||||
18. | 29,7 ÷ 30,0 MHz | Remote control device | ≤ 100 mW ERP | According to spurious emission limit 5 |
Radio Detection and Alarm Device | ||||
Telemetry Device | ||||
19. | 40,02 ÷ 40,98 MHz | Remote Control Device (for model airplanes) | ≤ 100 mW ERP | According to spurious emission limit 5 |
20. | 40,66 ÷ 40,7 MHz | Wireless Audio Device | ≤ 100 mW ERP | According to spurious emission limit 3 |
Remote control device | ≤ 100 mW ERP | |||
Non-Specific Short Range Device | ≤ 10 mW ERP | |||
21. | 43,71 ÷ 44,00 MHz 46,60 ÷ 46,98 MHz 48,75 ÷ 49,51 MHz 49,66 ÷ 50 MHz | Cordless phone equipment | ≤ 183 μW ERP | According to spurious emission limit 5 |
22. | 72,00 ÷ 72,99 MHz | Remote Control Device (for model airplanes) | ≤ 1 W ERP | According to spurious emission limit 5 |
23. | 87 ÷ 108 MHz | Wireless Audio Device (except personal FM transmitters) | ≤ 3 μW ERP | According to spurious emission limit 6 |
Personal FM transmitters (in the group of Wireless Audio Devices) | ≤ 20 nW ERP | |||
24. | 121,5 MHz | Emergency Position Indicating Radio Beacon (EPIRB), Personal Locator Beacon (PLB), emergency locator transmitter (ELT) (having radio positioning feature on the 121,5 MHz frequency) | ≤ 100 mW ERPEP | According to spurious emission limit 23 |
25. | 146,35 ÷ 146,5 MHz | Radio Detection and Alarm Device | ≤ 100 mW ERP | According to spurious emission limit 5 |
26. | 156,025 ÷ 162,025 MHz | Automatic Identification System (AIS) | ≤ 7,7 W ERP (12,5 W EIRP) | According to spurious emission limit 21 |
27. | 161,9625 ÷ 161,9875 MHz | AIS Search and Rescue Radar Transponder (AIS-SART) | ≤ 7,7 W ERP (12,5 W EIRP) | According to spurious emission limit 22 |
28. | 162,0125 ÷ 162,0375 MHz | |||
29. | 182,025 ÷ 182,975 MHz | Wireless Audio Device | ≤ 30 mW ERP | According to spurious emission limit 6 |
30. | 216 ÷ 217 MHz | Telemetry Devices used in the fields of healthcare and biology. | ≤ 0,01 mW ERP | According to spurious emission limit 5 |
31. | 217,025 ÷ 217,975 MHz | Wireless Audio Device | ≤ 30 mW ERP | According to spurious emission limit 6 |
32. | 218,025 ÷ 218,475 MHz | Wireless Audio Device | ≤ 30 mW ERP | According to spurious emission limit 6 |
33. | 240,15 ÷ 240,30 MHz | Radio Detection and Alarm Device | ≤ 100 mW ERP | According to spurious emission limit 5 |
34. | 300,00 ÷ 300,33 MHz | Radio Detection and Alarm Device | ≤ 100 mW ERP | According to spurious emission limit 5 |
35. | 312 ÷ 316 MHz | Radio Detection and Alarm Device | ≤ 100 mW ERP | According to spurious emission limit 5 |
Remote control device | ||||
36. | 401 ÷ 406 MHz | Medical Implant Communications Systems (MICS) | ≤ 25 μW ERP | According to spurious emission limit 5 |
37. | 401 ÷ 402 MHz 403,5 ÷ 403,8 MHz 405 ÷ 406 MHz | Medical Implant Telemetry Systems (MITS) | ≤ 100 nW ERP | |
38. | 406,0 ÷ 406,1 MHz | Emergency Position Indicating Radio Beacon (EPIRB), Personal Locator Beacon (PLB), emergency locator transmitter (ELT) | ≤ 12,2 W ERP | According to spurious emission limit 23 |
39. | 433,05 ÷ 434,79 MHz | Radio Frequency Identification (RFID) | ≤ 10 mW ERP | According to spurious emission limit 3 |
Remote control device | ||||
Telemetry Device | ||||
Low Power Wide Area Network (LPWAN) | ≤ 25 mW ERP | According to spurious emission limit 3 | ||
40. | 444,4 ÷ 444,8 MHz | Radio Detection and Alarm Device | ≤ 100 mW ERP | According to spurious emission limit 5 |
41. | 446,0 ÷ 446,2 MHz | Low-power handie-talkies | ≤ 500 mW ERP | According to spurious emission limit 7 |
42. | 470 ÷ 694 MHz | Wireless Audio Device (used for events) | ≤ 30 mW ERP | According to spurious emission limit 6 |
43. | 918,4 ÷ 923 MHz | Radio Frequency Identification (RFID) | ≤ 500 mW ERP | According to spurious emission limit 8 |
44. | 918,4 ÷ 923 MHz | Non-Specific Short Range Device | ≤ 25 mW ERP | According to spurious emission limit 8 |
45. | 920 ÷ 923 MHz | Low Power Wide Area Network (LPWAN) | ≤ 25 mW ERP | According to spurious emission limit 9 |
46. | 1880 ÷ 1900 MHz | Cordless phone equipment | ≤ 250 mW EIRP | According to spurious emission limit 10 |
47. | 1795 ÷ 1800 MHz | Wireless Audio Device | ≤ 20 mW EIRP; ≤ 50 mW EIRP (for wireless lavalier audio devices) | According to spurious emission limit 6 |
48. | 2400 ÷ 2483,5 MHz | Wireless Local Area Network or Radio Local Area Network (WLAN/ RLAN) | ≤ 200 mW EIRP (for devices using Frequency-Hopping Spread Spectrum (FHSS), and ≤ 10 mW/1 MHz EIRP for devices using modulation techniques other than FHSS | According to spurious emission limit 11 |
Remote control device | ≤ 100 mW EIRP | |||
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Wireless Video Transmitter | ≤ 100 mW EIRP | According to spurious emission limit 12 | ||
Non-Specific Short Range Device | ≤ 10 mW EIRP | According to spurious emission limit 13 | ||
49. | 2446 ÷ 2454 MHz | Radio Frequency Identification (RFID) | ≤ 500 mW EIRP | According to spurious emission limit 13 |
50. | 4200 ÷ 4800 MHz | Ultra Wide Band Device (UWB) | ≤ -70 dBm/MHz to ≤ -41,3 dBm/MHz (mean power) (see details in Appendix 13) | According to spurious emission limit 24 |
51. | 5150 ÷ 5250 MHz | Wireless Local Area Network or Radio Local Area Network (WLAN/ RLAN) | ≤ 200 mW EIRP and ≤ 10 mW/MHz | According to spurious emission limit 14 |
52. | 5250 ÷ 5350 MHz | Wireless Local Area Network or Radio Local Area Network (WLAN/ RLAN) | ≤ 200 mW EIRP and ≤ 10 mW/MHz (if device has transmit power control feature) ≤ 100 mW EIRP and ≤ 5 mW/MHz EIRP (if device does not have transmit power control feature) | According to spurious emission limit 14 |
53. | 5470 ÷ 5725 MHz | Wireless Local Area Network or Radio Local Area Network (WLAN/ RLAN) | ≤ 1 W EIRP and ≤ 50 mW/MHz (if device has transmit power control feature) ≤ 500 mW EIRP and ≤ 25 mW/MHz EIRP (if device does not have transmit power control feature) | According to spurious emission limit 14 |
54. | 5725 ÷ 5850 MHz | Wireless Local Area Network or Radio Local Area Network (WLAN/ RLAN) | ≤ 1 W EIRP and ≤ 50 mW/MHz | According to spurious emission limit 14 |
Wireless Video Transmitter | ≤ 100 mW EIRP | According to spurious emission limit 12 | ||
Remote control device | ≤ 100 mW EIRP | According to spurious emission limit 14 | ||
Non-Specific Short Range Device | ≤ 25 mW EIRP | According to spurious emission limit 13 | ||
Telemetry Device (short-distance measuring radar devices installed in closed tanks) | ≤ 24 dBm/50 MHz EIRP (peak power) ≤ -41,3 dBm/MHz EIRP (measured outside the wall of the tank) | According to spurious emission limit 15 | ||
55. | 7238,4 ÷ 9000 MHz | Ultra Wide Band Device (UWB) | ≤ -65 dBm/MHz to ≤ -41,3 dBm/MHz (mean power) (see details in Appendix 13) | According to spurious emission limit 24 |
56. | 8500 ÷ 10000 MHz | Telemetry Device (short-distance measuring radar devices installed in closed tanks) | ≤ 30 dBm/50 MHz EIRP (peak power) ≤ -41,3 dBm/MHz EIRP (measured outside the wall of the tank) | According to spurious emission limit 15 |
57. | 9200 ÷ 9500 MHz | Search and Rescue Radar Transponder (SART) | ≥ 400 mW EIRP | Not applicable |
58. | 10,5 ÷ 10,55 GHz | Wireless Video Transmitter | ≤ 100 mW EIRP | According to spurious emission limit 12 |
59. | 24 ÷ 24,25 GHz | Wireless Video Transmitter | ≤ 100 mW EIRP | According to spurious emission limit 12 |
Telemetry Device | According to spurious emission limit 13 | |||
Non-Specific Short Range Device | According to spurious emission limit 13 | |||
Short-range radio devices used in traffic sector (Automotive Radar, Radar sensor or Road Transport and Traffic Telematics) | ≤ 100 mW EIRP | According to spurious emission limit 16 | ||
60. | 57 ÷ 64 GHz | Non-Specific Short Range Device | ≤ 10 mW EIRP | According to spurious emission limit 20 |
Telemetry Device (short-distance measuring radar devices installed in closed tanks) | ≤ 43 dBm/50 MHz EIRP (peak power) ≤ -41,3 dBm/MHz EIRP (measured outside the wall of the tank) | According to spurious emission limit 15 | ||
Telemetry Device (short-range measuring radar devices) | ≤ 35 dBm/50 MHz EIRP (peak power) ≤ -2 dBm/MHz EIRP (mean power) | ≥ 20 dBc at transmitter output | ||
61. | 57 ÷ 66 GHz | Wireless Local Area Network or Radio Local Area Network (WLAN/ RLAN) | ≤ 10 W EIRP | According to spurious emission limit 17 |
62. | 61 ÷ 61,5 GHz | Non-Specific Short Range Device | ≤ 100 mW EIRP | According to spurious emission limit 20 |
63. | 75 ÷ 85 GHz | Telemetry Device (short-distance measuring radar devices installed in closed tanks) | ≤ 43 dBm/50 MHz EIRP (peak power) ≤ -41,3 dBm/MHz EIRP (measured outside the wall of the tank) | According to spurious emission limit 15 |
Telemetry Device (short-range measuring radar devices) | ≤ 34 dBm/50 MHz EIRP (peak power) ≤ -3 dBm/MHz EIRP (mean power) | ≥ 20 dBc at transmitter output | ||
64. | 76 ÷ 77 GHz | Short-range radio devices used in traffic sector (Automotive Radar, Radar sensor or Road Transport and Traffic Telematics) | ≤ 316,23 W/50 MHz EIRP | According to spurious emission limit 18 |
65. | 77 ÷ 81 GHz | Short-range radio devices used in traffic sector (Automotive Radar, Radar sensor or Road Transport and Traffic Telematics) | ≤ 316,23 W/50 MHz EIRP and ≤ 0,5 mW/MHz EIRP | According to spurious emission limit 19 |
66. | 122 ÷ 123 GHz | Non-Specific Short Range Device | ≤ 100 mW EIRP (≤ 10 mW/250 MHz EIRP in the 122 ÷ 122,25 GHz frequency band) | According to spurious emission limit 20 |
67. | 244 ÷ 246 GHz | Non-Specific Short Range Device | ≤ 100 mW EIRP | According to spurious emission limit 20 |
2. Classification of spurious emission and unwanted emission limits
2.1. Spurious emission limit 1: comply with spurious emission limits of transmitters specified in QCVN 55:2011/BTTTT (Note 2).
2.2. Unwanted emission limit 2: (comply with unwanted emission limits of transmitters specified in ETSI EN 302 608 V2.1.1 (2017-11) (Note 3)):
Frequency (f) | Limits (measured at 10 m distance) |
9 kHz ≤ f < 150 kHz | 44 dBμA/m at the 9 kHz frequency and decrease logarithmically in frequency to 19 dBμA/m at the 150 kHz frequency. |
150 kHz ≤ f < 30 MHz | 54 dBμA/m at the 150 kHz frequency and decrease logarithmically in frequency to 4 dBμA/m at the 30 MHz frequency. |
30 MHz ≤ f < 1 GHz | 79 dBμV/m at the 30 MHz frequency and decrease logarithmically in frequency to 54 dBμV/m at the 1 GHz frequency. |
2.3. Spurious emission limit 3: comply with spurious emission limits of transmitters specified in QCVN 73:2013/BTTTT (Note 2).
This spurious emission limit shall also apply to LPWAN specified in Clause 2 Article 5 of this Circular.
2.4. Spurious emission limit 4: comply with spurious emission limits of transmitters specified in QCVN 23:2011/BTTTT for angle-modulation devices and in QCVN 25:2011/BTTTT for AM/SSB or AM/DSB devices (Note 2).
2.5. Spurious emission limit 5: comply with spurious emission limits of low-power radio transmitters specified in QCVN 47:2015/BTTTT (Note 2).
2.6. Spurious emission limit 6: comply with spurious emission limits of transmitters specified in QCVN 91:2015/BTTTT (Note 2).
2.7. Spurious emission limit 7: comply with spurious emission limits of transmitters specified in QCVN 42:2011/BTTTT (Note 2).
2.8. Spurious emission limit 8 (comply with spurious emission limits of transmitters specified in Recommendation ITU-R. SM 329-12 (Note 3)):
Frequency (f) | Limit |
47 MHz ≤ f ≤ 74 MHz; 174 MHz ≤ f ≤ 230 MHz; | -54 dBm (4nW) |
At other frequencies below 1000 MHz | -36 dBm (250nW) |
At other frequencies above 1000 MHz | -30 dBm (1µW) |
This spurious emission limit shall also apply to Radio Frequency Identification specified in Clause 1 Article 5 of this Circular.
2.9. Spurious emission limit 9: comply with spurious emission limits of transmitters specified in QCVN 122:2020/BTTTT (Note 2). In case a LPWAN device is located at the same place with the base station in the 880-915 MHz frequency band, the limit on spurious emission from the LPWAN device shall not exceed -98 dBm/100 kHz or be within the frequency range from -98 dBm/100 kHz to -36 dBm/100 kHz if an agreement has been made between the entity operating the LPWAN device and the entity operating the base station in the 880-915 MHz frequency band.
This spurious emission limit shall also apply to LPWAN specified in Clause 2 Article 5 of this Circular.
2.10. Spurious emission limit 10: (comply with spurious emission limits of transmitters specified in Standard ETSI EN 301 406 v2.2.2 (Note 3) ):
Frequency (f) | Limit |
47 MHz ≤ f ≤ 74 MHz; 174 MHz ≤ f ≤ 230 MHz; | -54 dBm (4nW) |
At other frequencies below 1000 MHz | -36 dBm (250nW) |
At other frequencies above 1000 MHz | -30 dBm (1µW) |
2.11. Spurious emission limit 11: comply with spurious emission limits of transmitters specified in QCVN 54:2020/BTTTT (Note 2).
2.12. Spurious emission limit 12: comply with spurious emission limits of transmitters specified in QCVN 92:2015/BTTTT (Note 2).
2.13. Spurious emission limit 13: comply with spurious emission limits of transmitters specified in QCVN 74:2020/BTTTT (Note 2).
2.14. Spurious emission limit 14: comply with spurious emission limits of transmitters specified in QCVN 65:2013/BTTTT (Note 2).
2.15. Spurious emission limit 15: (comply with unwanted emission limits of transmitters specified in Standard ETSI EN 302 372 v2.1.1 (Note 3)):
Frequency (f) | Limits (measured outside the wall of tank and within prescribed frequency band) | Limits (measured outside the wall of tank and outside the prescribed frequency band) |
f < 1 GHz | - 51,3 dBm/MHz | - 61,3 dBm/MHz |
f ≥ 1 GHz | - 41,3 dBm/MHz | - 51,3 dBm/MHz - 60 dBm/MHz (applicable to 10,6 - 10,7 GHz frequency band) |
2.16. Spurious emission limit 16: (comply with unwanted emission limits of transmitters specified in Standard ETSI EN 302 858 v2.1.1 (Note 3)):
Frequency (f) | Limits |
47 MHz ≤ f ≤ 74 MHz; 174 MHz ≤ f ≤ 230 MHz; | -54 dBm (4nW) |
At other frequencies from 30 MHz to 1000 MHz | -36 dBm (250nW) |
At other frequencies above 1000 MHz to 50 000 MHz | -30 dBm (1µW) |
2.17. Spurious emission limit 17: comply with spurious emission limits of transmitters specified in QCVN 88:2015/BTTTT (Note 2).
2.18. Spurious emission limit 18: (comply with unwanted emission limits of transmitters specified in Standard EN 301 091-1 v2.1.1 (Note 3)):
Frequency (f) | Limits |
47 MHz ≤ f ≤ 74 MHz; 87,5 MHz ≤ f ≤ 118 MHz; 470 MHz ≤ f ≤ 862 MHz | -54 dBm |
At other frequencies from 30 MHz to 1000 MHz | -36 dBm |
1000 MHz < f ≤ 300 000 GHz | -30 dBm |
2.19. Spurious emission limit 19: (comply with unwanted emission limits of transmitters specified in Standard ETSI EN 302 264 v2.1.1 (Note 3)):
Frequency (f) | Limits |
47 MHz ≤ f ≤ 74 MHz; 87,5 MHz ≤ f ≤ 118 MHz; 174 MHz ≤ f ≤ 230 MHz; 470 MHz ≤ f ≤ 862 MHz | -54 dBm |
At other frequencies from 30 MHz to 1000 MHz | -36 dBm |
1000 MHz < f ≤ 300 000 GHz | -30 dBm |
2.20. Spurious emission limit 20: (comply with spurious emission limits of transmitters specified in Standard ETSI EN 305 550-2 v1.2.1 (Note 3)):
Frequency (f) | Limits |
47 MHz ≤ f ≤ 74 MHz; 87,5 MHz ≤ f ≤ 118 MHz; 174 MHz ≤ f ≤ 230 MHz; 470 MHz ≤ f ≤ 862 MHz | -54 dBm |
At other frequencies from 30 MHz to 1000 MHz | -36 dBm |
1000 MHz < f ≤ 300 000 GHz | -30 dBm |
2.21. Spurious emission limit 21: comply with spurious emission limits of transmitters specified in QCVN 68:2013/BTTTT (Note 2).
2.22. Spurious emission limit 22: comply with spurious emission limits of transmitters specified in QCVN 107:2016/BTTTT (Note 2).
2.23. Spurious emission limit 23: comply with spurious emission limits of transmitters specified in QCVN 57:2011/BTTTT (Note 2).
2.24. Spurious emission limit 24: (comply with spurious emission limits of transmitters specified in Standard ETSI EN 302 065-1 v2.1.1 (Note 3)):
Frequency (f) | Limits |
47 MHz ≤ f ≤ 74 MHz; 87,5 MHz ≤ f ≤ 118 MHz; 470 MHz ≤ f ≤ 862 MHz | -54 dBm |
At other frequencies from 30 MHz to 1000 MHz | -36 dBm |
1000 MHz < f ≤ 40 000 GHz | -30 dBm |
Note 2: In case corresponding national technical regulations are amended or superseded after this Circular comes into force, the spurious or unwanted emission limits specified in the new ones shall apply.
Note 3: In case the Ministry of Information and Communications promulgates national technical regulations on corresponding radio devices specified in Column B Section 1 of Appendix 2 enclosed herewith after this Circular comes into force, the spurious or unwanted emission limits specified in such national technical regulations shall apply.
3. Measurement methods: Comply with corresponding national technical regulations and technical standards specified in Section 2 of this Appendix.
APPENDIX 3
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT NON-SPECIFIC SHORT RANGE DEVICES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
13,553 ÷ 13,567 MHz | ≤ 4,5 mW ERP | According to spurious emission limit 1 |
|
26,957 ÷ 27,283 MHz | ≤ 100 mW ERP | According to spurious emission limit 3 |
|
40,66-40,7 MHz | ≤ 10 mW ERP | According to spurious emission limit 3 |
|
918,4 ÷ 923 MHz | ≤ 25 mW ERP | According to spurious emission limit 8 | - Device must use LBT (Listen Before Talk) protocol or its operating time must be less than 1% of duty cycle. |
2400 ÷ 2483,5 MHz | ≤ 10 mW EIRP | According to spurious emission limit 13 |
|
5725 ÷ 5850 MHz | ≤ 25 mW EIRP | According to spurious emission limit 13 |
|
24 ÷ 24,25 GHz | ≤ 100 mW EIRP | According to spurious emission limit 13 |
|
57 ÷ 64 GHz | ≤ 10 mW EIRP | According to spurious emission limit 20 |
|
61 ÷ 61,5 GHz | ≤ 100 mW EIRP | According to spurious emission limit 20 |
|
122 ÷ 123 GHz | ≤ 100 mW EIRP | According to spurious emission limit 20 | - Power spectral density falls within the 122 ÷ 122,25 GHz frequency band and shall not exceed 10 mW EIRP/250 MHz |
244 ÷ 246 GHz | ≤ 100 mW EIRP | According to spurious emission limit 20 |
|
APPENDIX 4
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT CORDLESS PHONES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
43,71 ÷ 44,00 MHz | ≤ 183 μW ERP | According to spurious emission limit 5 | - Frequency bands for the base unit - Device may only use frequency modulation telephony (F3E) or phase modulation telephony (G3E). |
48,75 ÷ 49,51 MHz | ≤ 183 μW ERP | According to spurious emission limit 5 | - Frequency bands for the mobile unit - Device may only use frequency modulation telephony (F3E) or phase modulation telephony (G3E). |
46,60 ÷ 46,98 MHz | ≤ 183 μW ERP | According to spurious emission limit 5 | - Frequency bands for the base unit - Device may only use frequency modulation telephony (F3E) or phase modulation telephony (G3E). |
49,66 ÷ 50 MHz | ≤ 183 μW ERP | According to spurious emission limit 5 | - Frequency bands for the mobile unit - Device may only use frequency modulation telephony (F3E) or phase modulation telephony (G3E). |
1880 ÷ 1900 MHz | ≤ 250 mW EIRP | According to spurious emission limit 10 | - Device is for indoor use only. |
APPENDIX 5
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT MEDICAL IMPLANT COMMUNICATIONS SYSTEMS (MICS) AND MEDICAL IMPLANT TELEMETRY SYSTEMS (MITS)
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
401 ÷ 406 MHz | 25 μW ERP | According to spurious emission limit 5 | - Frequency bands for MICS. - The width of occupying channel shall not exceed 300 kHz. - MICS must have at least 9 frequency channels arranged on the 401 ÷ 406 MHz frequency band. - MICS must use LBT (Listen Before Transmit) protocol. - MICS may transmit only when it is operated by remote control In case of emergency where any problems which may cause danger to the life or health of the patient are discovered, MICS may transmit immediately. |
401 ÷ 402 MHz; 403,5 ÷ 403,8 MHz; 405 ÷ 406 MHz | 100 nW ERP | According to spurious emission limit 5 | Frequency bands for MITS. |
APPENDIX 6
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT RADIO FREQUENCY IDENTIFICATION (RFID)
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
115 ÷ 150 kHz | ≤ 66 dBµA/m measured at 10 m distance | According to spurious emission limit 1 | Centre frequencies are 125 kHz and 134,2 kHz |
13,553 ÷ 13,567 MHz | ≤ 60 dBµA/m measured at 10 m distance | According to spurious emission limit 1 | Centre frequency is 13,56 MHz. |
433,05 ÷ 434,79 MHz | ≤ 10 mW ERP | According to spurious emission limit 3 | - Centre frequency is 433,92 MHz. - Device must have techniques to avoid harmful interference such as FHSS, LBT, limited duty cycle or power adjustment. |
918,4 ÷ 923 MHz | ≤ 500 mW ERP | According to spurious emission limit 8 | - The maximum permissible bandwidth of the hopping channel at 20 db depletion is 500 kHz. - RFID operating in this frequency band must have techniques to avoid harmful interference such as FHSS, LBT, or limited duty cycle. |
2446 ÷ 2454 MHz | ≤ 500 mW EIRP | According to spurious emission limit 13 |
|
APPENDIX 7
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT RADIO DETECTION AND ALARM DEVICES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission |
29,7 ÷ 30,0 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 |
146,35 ÷ 146,5 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 |
240,15 ÷ 240,30 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 |
300 ÷ 300,33 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 |
312 ÷ 316 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 |
444,4 ÷ 444,8 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 |
APPENDIX 8
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT WIRELESS AUDIO DEVICES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
40,66 ÷ 40,70 MHz | ≤ 100 mW ERP | According to spurious emission limit 6 |
|
87 ÷ 108 MHz | ≤ 20 nW ERP | According to spurious emission limit 6 | - Personal FM transmitter may only use 87 ÷ 108 MHz frequency band. - The channel has the width not exceeding 200 kHz and must entirely locate within the prescribed frequency band. |
≤ 3μW ERP | According to spurious emission limit 6 | - This limit applies to wireless audio devices (except personal FM transmitters). - The channel has the width not exceeding 200 kHz and must entirely locate within the prescribed frequency band. | |
182,025 ÷ 182,975 MHz | ≤ 30 mW ERP | According to spurious emission limit 6 | - The channel has the width not exceeding 200 kHz and must entirely locate within the prescribed frequency band. |
217,025 ÷ 217,975 MHz | ≤ 30 mW ERP | According to spurious emission limit 6 | - The channel has the width not exceeding 200 kHz and must entirely locate within the prescribed frequency band. |
218,025 ÷ 218,475 MHz | ≤ 30 mW ERP | According to spurious emission limit 6 | - The channel has the width not exceeding 200 kHz and must entirely locate within the prescribed frequency band. |
470 ÷ 694 MHz | ≤ 30 mW ERP | According to spurious emission limit 6 | - Wireless audio devices used for events. - The channel has the width not exceeding 200 kHz and must entirely locate within the prescribed frequency band. - Device must have ability to automatically adjust and adjust operating frequency. - Device must not be operated on television channels which are broadcasted in the operating region. - Minimum distance between the center frequency of device when it operates and upper or lower adjacent frequency of the television channel in the operating region is 400 kHz. - Device must not cause harmful interference to television receivers in the operating region. |
1795 ÷ 1800 MHz | ≤ 20 mW EIRP; ≤ 50 mW EIRP (for wireless lavalier audio devices) | According to spurious emission limit 6 |
|
APPENDIX 9
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-
EXEMPT REMOTE CONTROL DEVICES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
26,957 ÷ 27,283 MHz | ≤ 100 mW ERP | According to spurious emission limit 3 | Operators/users of remote control devices in model airplanes must strictly comply with regulations of law on licensing for flight activities. |
29,7 ÷ 30,0 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 | Operators/users of remote control devices in model airplanes must strictly comply with regulations of law on licensing for flight activities. |
40,02 ÷ 40,98 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 | For controlling model airplanes only. Operators/users of remote control devices in model airplanes must strictly comply with regulations of law on licensing for flight activities. |
40,66 ÷ 40,70 MHz | ≤ 100 mW ERP | According to spurious emission limit 3 | Operators/users of remote control devices in model airplanes must strictly comply with regulations of law on licensing for flight activities. |
72,00 ÷ 72,99 MHz | ≤ 1 W ERP | According to spurious emission limit 5 | - For controlling model airplanes only. Operators/users of remote control devices in model airplanes must strictly comply with regulations of law on licensing for flight activities. |
312 ÷ 316 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 | Operators/users of remote control devices in model airplanes must strictly comply with regulations of law on licensing for flight activities. |
433,05 ÷ 434,79 MHz | ≤ 10 mW ERP | According to spurious emission limit 3 | Operators/users of remote control devices in model airplanes must strictly comply with regulations of law on licensing for flight activities. - Device must have techniques to avoid harmful interference such as FHSS, LBT, limited duty cycle or power adjustment. |
2400 ÷ 2483,5 MHz | ≤ 100 mW EIRP | According to spurious emission limit 11 | Operators/users of remote control devices in model airplanes must strictly comply with regulations of law on licensing for flight activities. |
5725 ÷ 5850 MHz | ≤ 100 mW EIRP | According to spurious emission limit 14 | Operators/users of devices with integrated remote control in model airplanes must strictly comply with regulations of law on licensing for flight activities. |
APPENDIX 10
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT WIRELESS LOCAL AREA NETWORK (WLAN) OR RADIO LOCAL AREA NETWORK (RLAN)
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
2400 ÷ 2483,5 MHz | ≤ 200 mW EIRP (for devices using FHSS) and ≤ 10 mW/1 MHz EIRP (for devices using modulation techniques other FHSS) | According to spurious emission limit 11 | Operators/users of WLAN/RLAN devices must strictly comply with regulations of laws on telecommunications, information safety and data protection. |
5150 ÷ 5250 MHz | ≤ 200 mW EIRP and ≤ 10 mW/MHz EIRP | According to spurious emission limit 14 | - Device is for indoor use or used in the environment where it is protected from electromagnetic waves (E.g. in cars). - Operators/users of WLAN/RLAN devices must strictly comply with regulations of laws on telecommunications, information safety and data protection. |
5250 ÷ 5350 MHz | ≤ 200 mW EIRP and ≤ 10 mW/MHz EIRP (if device has transmit power control feature) ≤ 100 mW EIRP and ≤ 5 mW/MHz EIRP (if device does not have transmit power control feature) | According to spurious emission limit 14 | - Device has the ability to enable Dynamic Frequency Selection (DFS). - Operators/users of WLAN/RLAN devices must strictly comply with regulations of laws on telecommunications, information safety and data protection. |
5470 ÷ 5725 MHz | ≤ 1 W EIRP and ≤ 50 mW/MHz (if device has transmit power control feature) ≤ 500 mW EIRP and ≤ 25 mW/MHz EIRP (if device does not have transmit power control feature) | According to spurious emission limit 14 | - Device has the ability to enable Dynamic Frequency Selection (DFS). - Operators/users of WLAN/RLAN devices must strictly comply with regulations of laws on telecommunications, information safety and data protection. |
5725 ÷ 5850 MHz | ≤ 1 W EIRP and ≤ 50 mW/MHz | According to spurious emission limit 14 | Operators/users of WLAN/RLAN devices must strictly comply with regulations of laws on telecommunications, information safety and data protection. |
57 ÷ 66 GHz | ≤ 10 W EIRP | According to spurious emission limit 17 | - Device must use integrated antenna. - Device must not be installed at fixed outdoor location. - Operators/users of WLAN/RLAN devices must strictly comply with regulations of laws on telecommunications, information safety and data protection. |
APPENDIX 11
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-
EXEMPT TELEMETRY DEVICES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
26,957 ÷ 27,283 MHz | ≤ 100 mW ERP | According to spurious emission limit 3 |
|
29,70 ÷ 30,00 MHz | ≤ 100 mW ERP | According to spurious emission limit 5 |
|
216 ÷ 217 MHz | ≤ 0,01 mW ERP | According to spurious emission limit 5 | - Device is used for medical and biological applications only. |
433,05 ÷ 434,79 MHz | ≤ 10 mW ERP | According to spurious emission limit 3 | Device must have techniques to avoid harmful interference such as FHSS, LBT, limited duty cycle, or power adjustment. |
5725 ÷ 5850 MHz | ≤ 24 dBm/50 MHz EIRP (peak power) ≤ -41,3 dBm/MHz EIRP (measured outside the wall of the tank) | According to spurious emission limit 15 | Device is used for short-distance measuring radar applications and is installed in closed tanks with an antenna which is directed downwards towards to the earth. This device must be operated, installed and used by the entities that have appropriate specialist knowledge. |
8500 ÷ 10000 MHz | ≤ 30 dBm/50 MHz EIRP (peak power) ≤ -41,3 dBm/MHz EIRP (measured outside the wall of the tank) | According to spurious emission limit 15 | Device is used for short-distance measuring radar applications and is installed in closed tanks with an antenna which is directed downwards towards to the earth. This device must be operated, installed and used by the entities that have appropriate specialist knowledge. |
24 ÷ 24,25 GHz | ≤ 100 mW EIRP | According to spurious emission limit 13 |
|
57 ÷ 64 GHz | ≤ 43 dBm/50 MHz EIRP (peak power) ≤ -41,3 dBm/MHz EIRP (measured outside the wall of the tank) | According to spurious emission limit 15 | Device is used for short-distance measuring radar applications and is installed in closed tanks with an antenna which is directed downwards towards to the earth. This device must be operated, installed and used by the entities that have appropriate specialist knowledge. |
≤ -2 dBm/50 MHz (mean power) ≤ 35 dBm/50 MHz EIRP (peak power) | ≥ 20 dBc at transmitter output | Device is used for short-distance measuring radar applications and is installed in closed tanks or on site with an antenna which is directed downwards towards to the earth. This device must be operated, installed and used by the entities that have appropriate specialist knowledge. | |
75 ÷ 85 GHz | ≤ 43 dBm/50 MHz EIRP (peak power) ≤ -41,3 dBm/MHz EIRP (measured outside the wall of the tank) | According to spurious emission limit 15 | Device is used for short-distance measuring radar applications and is installed in closed tanks with an antenna which is directed downwards towards to the earth. This device must be operated, installed and used by the entities that have appropriate specialist knowledge. |
≤ -3 dBm/MHz EIRP (mean power) ≤ 34 dBm/50 MHz EIRP (peak power) | ≥ 20 dBc at transmitter output | Device is used for short-distance measuring radar applications and is installed in closed tanks or on site with an antenna which is directed downwards towards to the earth. This device must be operated, installed and used by the entities that have appropriate specialist knowledge. |
APPENDIX 12
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT WIRELESS VIDEO TRANSMITTERS
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission |
2400 ÷ 2483,5 MHz | ≤ 100 mW EIRP | According to spurious emission limit 12 |
5725 ÷ 5850 MHz | ≤ 100 mW EIRP | According to spurious emission limit 12 |
10,50 ÷ 10,55 GHz | ≤ 100 mW EIRP | According to spurious emission limit 12 |
24,00 ÷ 24,25 GHz | ≤ 100 mW EIRP | According to spurious emission limit 12 |
APPENDIX 13
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-
EXEMPT ULTRA WIDE BAND DEVICE (UWB)
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
4200 ÷ 4800 MHz | ≤ -70 dBm/MHz (mean power) ≤ -30 dBm/50 MHz EIRP (peak power) | According to spurious emission limit 24 | - Device must not be installed at a fixed outdoor location or connected to an antenna which is installed at a fixed outdoor location. - Device is for indoor use or used in the environment where it is protected from electromagnetic waves. - Device must not be used on board the aircraft. |
≤ -41,3 dBm/MHz (mean power) and ≤ 0 dBm/50 MHz EIRP (peak power) | According to spurious emission limit 24 | - Device must have techniques to avoid interference such as LBT, limited duty cycle or Detect and Avoid (DAA). - Device must not be installed at a fixed outdoor location or connected to an antenna which is installed at a fixed outdoor location. | |
7238,4 ÷ 9000 MHz | - In the 7238,4-8500 MHz frequency band: ≤ -41,3 dBm/MHz (mean power) and ≤ 0 dBm/50 MHz EIRP (peak power) - On the frequency above 8500 MHz to 9000 MHz: ≤ -65 dBm/MHz (mean power) and ≤ -25 dBm/50 MHz EIRP (peak power). | According to spurious emission limit 24 | + Device must not be installed at a fixed outdoor location or connected to an antenna which is installed at a fixed outdoor location.
|
- In the 7238,4 - 9000 MHz frequency band: ≤ -41,3 dBm/MHz (mean power) and ≤ 0 dBm/50 MHz EIRP (peak power) | According to spurious emission limit 24 | + Device must have techniques to avoid interference such as LBT, limited duty cycle or DAA. + Device must not be installed at a fixed outdoor location or connected to an antenna which is installed at a fixed outdoor location. |
APPENDIX 14
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-
EXEMPT AUTOMOTIVE RADARS, RADAR SENSORS OR ROAD TRANSPORT AND TRAFFIC TELEMATICS
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission or unwanted emission | Other conditions |
3,234 ÷ 5,234 MHz | ≤ 9 dBµA/m measured at 10m distance | According to unwanted emission limit 2 | - Device is used for short-range radio devices providing links between tracks and trains for determining the train location. - The duty cycle of device shall not exceed 1%. |
26,957 ÷ 27,283 MHz | ≤ 42 dBµA/m measured at 10m distance | According to unwanted emission limit 2 | - Device is used for short-range radio devices providing links between tracks and trains for determining the train location. - Center frequency is 27,095 MHz. |
24 ÷ 24,25 GHz | ≤ 100 mW EIRP | According to spurious emission limit 16 | Used for automotive radars, radar sensors or road transport and traffic telematics. |
76 ÷ 77 GHz | ≤ 316,23 W EIRP/50 MHz (peak power) | According to spurious emission limit 18 | Used for automotive radars, radar sensors or road transport and traffic telematics. |
77 ÷ 81 GHz | ≤ 316,23 W EIRP (peak power, measured in the 50 MHz bandwidth) and ≤ 0,5 mW/MHz EIRP (mean power spectral density) | According to spurious emission limit 19 | Used for automotive radars, radar sensors or road transport and traffic telematics. |
APPENDIX 15
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-
EXEMPT INDUCTIVE LOOPS
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
9 ÷ 100 kHz | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
|
100 ÷ 119 kHz | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
|
119 ÷ 135 kHz | ≤ 66 dBµA/m measured at 10m distance (reduced by 10 dB/decade at the frequency above 119 kHz) | According to spurious emission limit 1<0} | Limit 42 dBµA/m measured at 10 m distance applies to the following frequencies: 129,1 kHz ± 500 Hz. |
135 ÷ 140 kHz | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
|
140 ÷ 148,5 kHz | ≤ 37,7 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
|
148,5 ÷ 190 kHz | ≤ 30 dBµA/m measured at 10m distance | According to spurious emission limit 1 | - Used in medical information sector. - The duty cycle of device shall not exceed 10%. |
148,5 ÷ 190 kHz | ≤ -15 dBµA/m measured at 10m distance (in the 10 kHz bandwidth) | According to spurious emission limit 1 |
|
3,155 ÷ 3,400 MHz | ≤ 13,5 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
|
6,765 ÷ 6,795 MHz | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
|
10,200 ÷ 11,000 MHz | ≤ 9 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
|
13,553 ÷ 13,567 MHz | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
|
APPENDIX 16
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT WIRELESS POWER TRANSFER (WPT)
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
100 ÷ 119 kHz | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 | Device uses inductive loop technology. |
119 ÷ 135 kHz | ≤ 66 dBµA/m measured at 10m distance (reduced by 10 dB/decade at the frequency above 119 kHz) | According to spurious emission limit 1 | - Limit 42 dBµA/m measured at 10 m distance applies to the129,1 kHz ± 500 Hz frequency. - Device uses inductive loop technology. |
135 ÷ 140 kHz | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 | Device uses inductive loop technology. |
140 ÷ 148,5 kHz | ≤ 37,7 dBµA/m measured at 10m distance | According to spurious emission limit 1 | Device uses inductive loop technology. |
148,5 ÷ 190 kHz | ≤ -15 dBµA/m measured at 10m distance (in the 10 kHz bandwidth) | According to spurious emission limit 1 | Device uses inductive loop technology.
|
326,5 kHz 340 kHz | ≤ -15 dBµA/m measured at 10m distance (in the 10 kHz bandwidth) | According to spurious emission limit 1 | - Device uses inductive loop technology. - Device must not be installed at a fixed outdoor location or connected to an antenna which is installed at a fixed outdoor location. - Device must not be used on board the aircraft. |
353 ÷ 373,5 kHz | ≤ -15 dBµA/m measured at 10m distance (in the 10 kHz bandwidth) | According to spurious emission limit 1 | - Device uses inductive loop technology. - Device must not be installed at a fixed outdoor location or connected to an antenna which is installed at a fixed outdoor location. - Device must not be used on board the aircraft. |
1,64 ÷ 1,8 MHz | ≤ -15 dBµA/m measured at 10m distance (in the 10 kHz bandwidth) | According to spurious emission limit 1 | Device uses inductive loop technology. |
6,765 ÷ 6,795 MHz | ≤ 42 dBµA/m measured at 10m distance | According to spurious emission limit 1 |
|
APPENDIX 17
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-
EXEMPT RADIO DEVICES PLACED ON FISHING VESSELS
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
26,96 MHz ÷ 27,41 MHz | ≤ 12 W ERP (single-sideband amplitude modulation: AM/SSB) ≤ 4 W ERP (double-sideband amplitude modulation: AM/DSB, or angle modulation: frequency modulation and phase modulation (FM/PM)) | According to spurious emission limit 4 | - This frequency band is divided into 40 channels from 1 to 40; each frequency channel corresponds to the center frequency and purpose specified in Note 4. - Note 5. |
Note 4: Center frequencies and purposes of frequency channels
Channel | Center frequency | Purpose of use |
| Channel | Center frequency | Purpose of use |
|
1 | 26,965 | Communication channel | 21 | 27,215 | Communication channel |
| |
2 | 26,975 | 22 | 27,225 |
| |||
3 | 26,985 | 23 | 27,235 |
| |||
4 | 27,005 | 24 | 27,245 |
| |||
5 | 27,015 | 25 | 27,255 |
| |||
6 | 27,025 | 26 | 27,265 |
| |||
7 | 27,035 | 27 | 27,275 |
| |||
8 | 27,055 | 28 | 27,285 |
| |||
9 | 27,065 | Safety and rescue channel | 29 | 27,295 |
| ||
10 | 27,075 | Communication channel | 30 | 27,305 |
| ||
11 | 27,085 | Calling channel | 31 | 27,315 |
| ||
12 | 27,105 | Communication channel | 32 | 27,325 |
| ||
13 | 27,115 | 33 | 27,335 |
| |||
14 | 27,125 | 34 | 27,345 |
| |||
15 | 27,135 | 35 | 27,355 |
| |||
16 | 27,155 | 36 | 27,365 |
| |||
17 | 27,165 | 37 | 27,375 |
| |||
18 | 27,175 | 38 | 27,385 |
| |||
19 | 27,185 | Calling channel | 39 | 27,395 |
| ||
20 | 27,205 | Communication channel | 40 | 27,405 |
|
In this table, channels are provided for as follows:
Safety and rescue channel provides safety and rescue information.
Communication channel serves the exchange of information and messages.
Calling channel serves making of calls.
Note 5:
1.1. Conditions for use of safety and rescue channel
1.1.1. In case of emergency where people and vessels at sea may face danger, in addition to channel 9 (which serves safety and rescue information), relevant organizations and individuals may create waves to attract attention on any channels in the Table of frequency allocations when sending distress signals.
1.1.2. When receiving distress signals, radio stations must immediately stop transmitting waves on the frequency which may cause interference to distress signals and keep listening on frequencies designated for transmission of distress signals; reply and provide necessary assistance, and inform search and rescue agencies.
1.2. Conditions for use of calling channel
1.2.1. Calling channels (channel 11 and channel 19) are dedicated for making calls between fishing vessels.
1.2.2. The length of call made on the calling channel shall not exceed 1 minute. The calling station must say its name and call name of the receiving station (3 times) on the calling channel. Immediately after receiving response from the receiving station, the calling station must actively name the communication channel so that both stations communicate on such communication channel; the communication on the calling channel is not allowed.
1.3. Conditions for use of communication channel
1.3.1. Communication channel is selected from 37 channels specified in the Table of frequency allocations (excluding safety and rescue channel, and calling channels). If the selected communication channel is interfered by other stations, the communication may be transferred to another communication channel to avoid interference.
1.3.2. Communications between stations on a communication channel shall not exceed 5 minutes. If the exchange requires a period more than 5 minutes, the communication must be stopped for one minute before continued.
1.4. The following acts are prohibited:
1.4.1. Use a power exceeding the radiated power limits prescribed in this Appendix.
1.4.2. Cause harmful interference to the safety and rescue channel.
1.4.3. Use the safety and rescue channel for making calls and communications.
1.4.4. Use the calling channel for communication (unless transmission of distress signals).
1.4.5. Make communications on the communication channel for a consecutive period of exceeding 5 minutes or generate any carrier that interferences between calls.
1.4.6. Send call or identification signals consecutively or repeatedly for a period of more than 1 minute on the calling channel.
1.4.7. Send identification signals on two or several frequencies at the same time in order to contact with the only station.
APPENDIX 18
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT LOW-POWER HANDIE-TALKIES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
446,00 ÷ 446,2 MHz | ≤ 500 mW ERP | According to spurious emission limit 7 | - Device uses digital technologies with the width of each frequency channel of 6,25 kHz or 12,5 kHz. - Center frequencies of 12,5 kHz channels: 446,00625 + n × 0,0125 - Center frequencies of 6,25 kHz channels: 446,003125 + n × 0,00625 (n = 0 to 31) - Device must use integrated antenna. Device must be designed so as not to adjust frequencies out of the 446-446,2 MHz frequency band and not to increase the power to more than 500 mW. - Device must be automatically broken when it operates for a period of exceeding 180 seconds. - The frequency channel should be checked before making communications to avoid interference. |
APPENDIX 19
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO LICENSE-EXEMPT LOW POWER WIDE AREA NETWORK (LPWAN)
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Other conditions |
433,05 ÷ 434,79 MHz | ≤ 25 mW ERP | According to spurious emission limit 3 | - 10% duty cycle and 1% duty cycle shall be applied to gateways and terminal devices respectively. - Operators/users of LPWAN devices must strictly comply with regulations of laws on telecommunications, information safety and data protection. |
920 ÷ 923 MHz | ≤ 25 mW ERP | According to spurious emission limit 9 (Note 6) | - 10% duty cycle and 1% duty cycle shall be applied to gateways and terminal devices respectively. - Operators/users of LPWAN devices must strictly comply with regulations of laws on telecommunications, information safety and data protection. |
Note 6: If the LPWAN device is installed at the same location with the base transceiver station (BTS) operating on the 880-915 MHz frequency band, the spurious emission emanating from the LPWAN device shall not exceed -98 dBm/100 kHz or from -98 dBm/100 kHz to -36 dBm/100 kHz as agreed upon between the operator of LPWAN device and the operator of mobile communication system on the 880-915 MHz frequency band.
APPENDIX 20
TECHNICAL AND OPERATIONAL CONDITIONS APPLIED TO RADIO TERMINAL DEVICES USED FOR SAFETY AND RESCUE PURPOSES
(Enclosed with the Circular No. 08/2021/TT-BTTTT dated October 14, 2021 of the Minister of Information and Communication)
Frequency band | Main emission | Spurious emission | Type of radio device | Other conditions |
156,025 ÷ 162,025 MHz (Note 7) | ≤ 7,7 W ERP (12,5 W EIRP) | According to spurious emission limit 21 | Automatic Identification System (AIS) | - Device operators/users must strictly comply with regulations of laws on maritime and inland waterway, and other regulations. - Device operators/users shall set up and provide related identification information and data in accordance with regulations of law. - Device must not be used for purposes other than the prescribed ones. - If a device is no longer used, the features to receive and transmit radio waves must be disabled to minimize its ability to inadvertently transmit on frequencies dedicated to safety and rescue purposes. |
161,9625 ÷ 161,9875 MHz; 162,0125 ÷ 162,0375 MHz | ≤ 7,7 W ERP (12,5 W EIRP) | According to spurious emission limit 22 | AIS Search and Rescue Transmitter (AIS-SART) (Note 8) | - Device operators/users must strictly comply with regulations of laws on maritime and inland waterway, and other regulations. - Device must not be used for purposes other than the prescribed ones. - If a device is no longer used, the features to receive and transmit radio waves must be disabled to minimize its ability to inadvertently transmit on frequencies dedicated to safety and rescue purposes. |
406,0 ÷ 406,1 MHz | ≤ 12,2 W ERP | According to spurious emission limit 23
| Emergency Position Indicating Radio Beacon (EPIRB) (Note 8) | - Device operators/users must strictly comply with regulations of laws on maritime and inland waterway, and other regulations. - Device operators/users shall set up and provide related identification information and data in accordance with regulations of law. - Emission on the 121,5 MHz frequency: A3X. This frequency is used for auxiliary radio locating device of the EPIRB. - Device must not be used for purposes other than the prescribed ones. - If a device is no longer used, the features to receive and transmit radio waves must be disabled to minimize its ability to inadvertently transmit on frequencies dedicated to safety and rescue purposes. |
121,5 MHz | ≤ 100 mW ERPEP | |||
406,0 ÷ 406,1 MHz | ≤ 12,2 W ERP | According to spurious emission limit 23 | Personal Locator Beacon (PLB) | - Device operators/users shall set up and provide related identification information and data in accordance with regulations of law. - Device must not be used for purposes other than the prescribed ones. - The 121,5 MHz frequency is used for auxiliary radio locating device of the PLB. - If a device is no longer used, the features to receive and transmit radio waves must be disabled to minimize its ability to inadvertently transmit on frequencies dedicated to safety and rescue purposes. |
121,5 MHz | ≤ 100 mW ERPEP | |||
406,0 ÷ 406,1 MHz | ≤ 12,2 W ERP | According to spurious emission limit 23 | Emergency Locator Transmitter (ELT) (Note 8) | - Device operators/users must strictly comply with regulations of law on civil aviation, and set up and provide related identification information and data in accordance with regulations of law. - Device must not be used for purposes other than the prescribed ones. - The 121,5 MHz frequency is used for auxiliary radio locating device of the ELT. - If a device is no longer used, the features to receive and transmit radio waves must be disabled to minimize its ability to inadvertently transmit on frequencies dedicated to safety and rescue purposes. |
121,5 MHz | ≤ 100 mW ERPEP | |||
9200 ÷ 9500 MHz | ≥ 400 mW EIRP | Not applicable | Search and Rescue Radar Transponder (SART). (Note 8) | - Device operators/users must strictly comply with regulations of laws on maritime and inland waterway, and other regulations. - Device must not be used for purposes other than the prescribed ones. - If a device is no longer used, the features to receive and transmit radio waves must be disabled to minimize its ability to inadvertently transmit on frequencies dedicated to safety and rescue purposes. |
Note 7: Frequency bands identified for international: AIS1 (161,9625 ÷ 161,9875 MHz), AIS2 (162,0125 ÷ 162,0375 MHz).
Note 8: If organizations and individuals wish to apply for the license to use radio frequencies for EPIRB, AIS, SART, AIS-SART, ELT, they are required to follow procedures for license to use radio frequency in accordance with regulations of law.
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