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  • Published date: 06/12/2017

MINISTRY OF INFORMATION AND COMMUNICATIONS

 

SOCIALIST REPUBLIC OF VIETNAM

Independent - freedoom - happiness    

                                                            

 

No. 46 /2016/TT-BTTTT

Ha Noi, December 26, 2016

CIRCULAR

Regulation on the list of radio devices exempted from frequency license, together with their technical and operational conditions

 

 

        Pursuant to Law on Radio Frequency dated on November, 2009;

        Pursuant to Decree No. 71/2013/ND-CP of the Prime Minister dated on November 21, 2013 promulgate National Allocation Frequency Table;

       Pursuant to Decree 132/2013/ND-CP dated on October 16th 2013 of the Government, defining the functions, tasks, powers and organizational structure of the Ministry of Information and Communications;

      At the proposal the Director General of Authority of Radio Frequency Management;

      Minister of Information and Communications issues the Circular prescribing Regulation on the list of radio devices exempted from frequency license, together with their technical and operational conditions

Article 1. Scope

1. This Circular prescribes the list and the technical and operational conditions of radio devices exempted from radio frequency license.

2. This Circular applies to organizations and individuals  that use, manufacture, import or trade radio equipments which are exempted from radio frequency license in Viet Nam.

3. This Circular does not apply to radio devices manufactured or imported for the purpose of national defense or security of the armed forces. The production, import and use of radio devices managemented by the Ministry of Defense, Ministry of Public Security shall ensure compliance with national technical regulations respectively.

Article 2. Explain the words

In this Circular, the words below are explained:

  1. Short Range Device: is intended to cover the radio transmitters which provide either unidirectional or bi-directional communication which have low capability of causing interference to other radio equipment.
  2. Non-Specific Short Range Device: Includes short range radio devices that meet technical and operational requirements, regardless of application or purpose of use.
  3. Cordless Phone: is the cordless telephone terminal connected to the public telephone network via analog two-wire interface. This device consists of two separate blocks are connected to each other via the radio interface:

The base unit is installed at a fixed position and connected to two fixed telephone lines of the public telephone network (PSTN: Public Switched Telephone Network); using an integral antenna. An integral antenna is a permanent fixed antenna installed inside or outside the unit as an indispensable part of the unit.

Mobile unit (one or more than one) is a hand-held unit using an integral antenna. The mobile unit carries the subscriber telephone number of the base unit.

  1. MICS-Medical Implant Communications Systems and MITS-Medical Implant Telemetry Systems

Medical Implant Communications Systems MICS) and Medical Implant Telemetry Systems (MITS) are systems each consisting of an implanted medical device and an external radio communications device used for the purpose of exchanging data with the implanted device within a distance of 2m; then the data will be transmitted to a processing center and to physical doctors via the telecommunications network.

In MICS, the implanted and radio communications devices exchange data in two ways. In MITS, data are transmitted only in one way from the implanted device to the radio communications device at programmed points of time.

  1. RFID-Radio Frequency Identification

Radio Frequency Identification Devices (RFID) use radio waves to automatically identify, monitor and manage goods, people and animals and perform other applications.  Such a device consists of two distinct units linked via radio interface:

  • RF tag carrying a chip, with or without a power source, attached to the to-be-identified object. A chip contains information on the target.
  • RF Reader transmitting a certain frequency to activate the radio card and the radio card will transmit information contained in the card. Such information will be recorded by the reader and transmitted to a data processing system.
  • RFID devices are used in distribution, transportation and retail, healthcare, transportation or mobile applications (smart advertising).
  1. Radio Detection and Alarm Device

Radio detection and alarm devices include sensors and control systems connected together via radio interface.

Some typical radio detection and alarm devices include theft, movement and metal detectors

  1. Wireless Audio Device

Wireless audio device includes include devices applying radio waves to transmit sounds or audio signals at a short range.

Some typical wireless audio device: include shirt-fastened cordless microphones, hand-held cordless microphones, cordless headphones, private FM transmitters and hearing assistance aids.

  1. Remote Control Device

Radio remote controls include those using radio waves to control models and industrial and domestic use.

Typical remote controls include controls of air models such as aircraft models, ground and water surface models such as car models and ship models, and industrial and civil control such as car- and garage-door openers.

  1. Wireless Local Area Network devices

Wireless Local Area Network devices (below referred to as WLAN devices) are used to establish radio local networks instead of using cable lines.

Typical WLAN devices include access point, wifi router and wifi card, The device incorporates an IEEE 802.11 compliant radio transceiver module (not including wireless equipment for connecting WLANs Wireless bridge)

  1. Radio telemetry

Radio telemetry devices automatically indicate or record measurements and control functions of other devices via radio interface

  1. Wireless video transmitters

Wireless video transmitters are used to transmit image data to processing system via radio interface.

Typical wireless video devices include wireless webcam, wireless camera and wireless video devices via USB port interface from the computer.

  1. Radio device placed on fishing boat

Radio device placed on fishing boat are used for communication between fishing boats operating in the waters of Vietnam.

  1. Receiver only radio device is radio device which has the function of receiving radio signals
  2. Broadband data transmission device is a wireless device used for broadband transmission in the IMT-Advanced mobile network (LTE-Advanced and the next) using the 5150-5350 MHz band, 5470-5850 MHz band width a minimum bandwith of 20 MHz or for speed access to Gigabit/s in wireless local area network (WLAN), wireless personal area network (WPAN) within the band 57-66 GHz.
  3. Automotive Radar is short range radar device for use in traffic information applications such as cruise control, detection, warning and avoidance of collisions between vehicles and objects.
  4. Low-power radio communication device is a mobile end-to-end wireless device capable of receiving and transmitting voice signals within a limited area (for ex, a building, a campus).
  5. UWB-Ultra Wide Band Communication Device is short range radio device for transmitting information in the GHz frequency band with signal bandwidths above 500 MHz.
  6. Inductive Loop is a device with signal transmission function, based on the principle of electromagnetic field and using low frequency.
  7. AIS-Automatic Identification System is a radio device used in maritime safety systems installed for use on ships, boats and other motor or non-motor means to improve maneuverability and impact management facilitate operation on water or underwater.
  8. EPIRB-Emergency Position Indicating Radio Beacon is an emergency location radio device that uses the 406-406.1 MHz frequency band, which is installed and used on vehicles operating on water or under water, including ships and boats. Other motor or non-motor.
  9. SART-Search and Rescue Radar Transponder is a marine rescue radio device operating in the 9 GHz band.
  10. Automatic Identification System - Search and Rescue Radar Transponder (AIS-SART) is a radio radio of the marine device support group for search and rescue agencies to locate life-saving equipment or boats in search and rescue operations.

Article 3. The list of radio devices exempted from frequency license, together with the technical and operational requirements

  1. The list of radio devices exempted from frequency license (below referred to as The list) specified in Appendix 1 together of this Circular.
  2. The technical condition and exploitation of radio devices exempted from frequency license specified from Appendix 2 to Appendix 19 of this Circular.

Article 4. The exempted from radio frequency license

Radio device of The list meets the general conditions in Article 5 and the technical conditions and exploitation in the corresponding from Appendix 2 to Appendix 19 of this Circular exempted from frequency license

Article 5. General conditions

The following conditions apply generally to radio devices exempted from frequency license:

  1. The license exempted radio devices must tolerate any interference caused by radio devices which granted a radio license, and the radio devices that are permitted to operate by management agencies

In the case of the license exempted radio devices cause harmful interference, organizations and individuals shall immediately stop their operation and just resume their operation after the interference has been resolved.

  1. The license exempted radio devices must tolerate any interference caused by the industrial, scientific and medical (ISM) equipment by sharing the following frequency bands used for ISM purposes:

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;

e) Frequency band 5725 ÷ 5875 MHz;

f) Frequency band 24000 ÷ 24500 MHz.

  1. Organizations and individuals that manufacture, import the license exempted radio devices shall also comply with the provisions of the law on the import, certification and conformity announcement, ensure the device in accordance with technical and operational requirements specified in the Appendixs of this Circular.
  2. Organizations and individuals that exploit and use equipment incorporating radio remote control functions in airplane models must comply with the provisions of law on licensing air operations.
  3. Organizations and individuals that manufacture, import the license exempted radio devices shall also comply with the provisions of the law on telecommunications, radio frequencies and other relevant laws; Do not use the information obtained for illegal purposes.

Article 6. Takes effect and Transitional terms

  1. Radio device that meets the requirements of Circular No. 03/2012/TT-BTTTT March 20, 2012 of the Ministry of Information and Communications "Stipulating the list of radio devices exempted from frequency license, together with the technical and operational requirements", which are no longer suitable to this Circular, may continue to be used but must be discontinued when causing harmful interference to radio device granted the license.
  2. Radio communication device of low power on the list in Appendix 1 of this Circular, according to the conditions of frequencies, technical and operational specified in Appendix 2 and Appendix 18 to this Circular to exempt radio frequency use licenses from January 1, 2020.
  3. No authorize for the deployment of new radio device using the 446-446.2 MHz band with power of over 500 mW from the effective date of this Circular.

Article 7. Executive terms

1. This Circular takes effect from 14 february 2017 and replaces Circular No. 03/2012/TT-BTTTT March 20, 2012 of the Ministry of Information and Communications "Stipulating the list of radio devices exempted from frequency license, together with the technical and operational requirements

2. The director of the Ministry’s Office, the general director of the Authority of radio frequency management, heads of agencies and offices under the Ministry of Information and Communications, and organizations and individuals are responsible for the implementation of this Circular.

3. Any problem encountered in the process of implementation should be promptly reported to the Ministry of Information and Communications for consideration, amendment or supplementation./.

Recipients:

  • The Prime Minister, Deputy Prime Ministers;
  • Office of the Government;
  • Office of the President;
  • Office of the National Assembly; 
  • Officer of the Party Central Committee;
  • Office of the General Secretary;
  • Ministries, ministerial-level agencies, government-attached agencies;
  • People's Procuratorate of the Supreme;
  • Supreme People's Court;
  • state audit;
  • People's Committees of provinces and cities under central authority;
  • Department of Information and Communication of provinces and cities under central authority;
  • Ministry of Information and Communications: Minister, Deputy Ministers, affiliated agencies and units, MIC portals;
  • Department of Legal Document Inspection - Ministry of Justice;
  • Pulic Announcement;
  • Government Information Portal;
  • Filing: Document, ARFM.250.

MINISTER

(signed)

 

 

 

TRUONG MINH TUAN

 

 

Annex 1

LIST OF RADIO DEVICES EXEMPTED FROM RADIO FREQUENCY LICENSE

(Attached to Circular No. 46/2016/TT-BTTTT dated on December 26, 2016 of the Ministry of Information and Communications)

No.

Equipment types

1

Short range radiocommunication devices

1.1

Non-specific SRDs

1.2

Cordless phone

1.3

Medical implant communications systems (MICS) and Medical implant telemetry systems (MITS)

1.4

Radio frequency identification devices (RFID)

1.5

Radio Detection and Alarm Devices

1.6

Wireless audio system

1.7

Radio remote control

1.8

Wireless Local Area Network (WLAN)

1.9

Radio telemetry devices

1.10

Wireless video transmitter

1.11

Broadband data transmission device

1.12

UWB-Ultra Wide Band Communication Device

1.13

Automotive Radar

1.14

Inductive Loop

2

Radio devices placed on fishing means

3

Receiver only

4

Low-power radio communication device

5

Radio device group for Search and Rescue Marine

5.1

AIS-Automatic Identification System

5.2

EPIRB-Emergency Position Indicating Radio Beacon

5.3

SART-Search and Rescue Radar Transponder

5.4

Automatic Identification System  -  Search and Rescue Radar Transponder (AIS-SART)

 (*) In the cases when organizations or individuals using radio receiver device demand for protection of device from harmful interference, they shall carry out procedures for applying for radio frequency use licenses according to the current regulations of The Ministry of Information and Communications

 

 Annex 2

AUTHORIZED FREQUENCY BANDS AND EMISSION LEVEL

(Attached to Circular No. 46/2016/TT-BTTTT dated on December 26, 2016 of the Ministry of Information and Communications)

1. Authorized frequency bands anh emission level

Frequency band: Specifies the limit of the operating frequency range for radio device exempted from the corresponding radio frequency license.

Types of devices or applications: The name of the type of equipment or radio application listed in Appendix 1 to be used

Principal: regulates the maximum emission limit (except where the SART device regulates the minimum transmission power) and is expressed in the form of effective radiated power or equivalent isotropic radiated power for radio device exempt.

Spurious emission: the maximum limit for spurious emission or the minimum emission attenuation for radio equipment exempt.

No.

FREQUENCY BAND

TYPES OF DEVICES OR APPLICATIONS

PRINCIPAL EMISSION

SPURIOUS EMISSION

 

A

B

C

D

1

9 ÷ 16 kHz

Inductive Loop

≤ 42 dBµA/m measured at a distance of 10 m

According to spurious emission limit 1

2

16 ÷ 115 kHz

Radio alarm and detection devices

≤ 4.5 mW ERP  [1]

 

According to spurious emission limit 1

Inductive Loop

≤ 42 dBµA/m measured at a distance of 10 m

According to spurious emission limit 1

3

115 ÷ 148.5 kHz

Inductive Loop

≤ 42 dBµA/m measured at a distance of 10 m

According to spurious emission limit 1

4

115 ÷ 150 kHz

Radio alarm and detection devices

≤ 4.5 mW ERP

According to spurious emission limit 1

Radio frequency identification devices

Radio remote controls

5

326.5 kHz

340 kHz

Inductive Loop

≤ -15 dBµA/m measured at a distance of 10 m (RBW= 10kHz)

According to spurious emission limit 1

6

3.155 ÷ 3.400 MHz

Wireless hearing

≤ -13.5 dBµA/m measured at a distance of 10m

According to spurious emission limit 1

7

6.765 ÷ 6.795 MHz

Inductive Loop

≤ 42 dBµA/m measured at a distance of 10 m

According to spurious emission limit 1

8

10.2 ÷ 11 MHz

Wireless hearing audio aids

≤ 4 µW ERP

According to spurious emission limit 1

9

13.553 ÷ 13.567 MHz

Radio alarm and detection devices

≤ 4.5 mW ERP

According to spurious emission limit 1

Radio frequency identification devices

Non-specific SRDs

10

26.957 ÷ 27.283 MHz

Radio remote control

≤ 100 mW ERP

≥ 40 dBc at transmitter output

Radio telemetry devices

Non-specific SRDs

11

26.96 ÷ 27.41 MHz

Radio devices placed on fishing means

≤ 12 W ERP (single sideband modulation: AM / SSB)

According to spurious emission limit 2

≤ 4 W ERP (Double-sideband modulation amplitude or angle modulation: AM / SSB, FM / AM)

12

29.7 ÷ 30.0 MHz

Radio remote control

≤ 100 mW ERP

≥ 40 dBc at transmitter output

Radio alarm and detection devices

Radio telemetry devices

13

34.995 ÷ 35.225 MHz

Radio remote control

≤ 100 mW ERP

≥ 40 dBc at transmitter output

14

40.02 ÷ 40.98 MHz

Remote controls of aircraft models (a type of radio remote control)

≤ 100 mW ERP

≥ 40 dBc at transmitter output

15

40.66 ÷ 40.7 MHz

Cordless audio devices

≤ 100 mW ERP

≥ 40 dBc at transmitter output

Radio remote controls

Non-specific SRDs

16

40.50 ÷ 41.00 MHz

Medical and biological applications (of a type of radio telemetry devices)

≤ 10 µW ERP

≥ 32 dBc at transmitter output

17

43.71 ÷ 44.00 MHz

46.60 ÷ 46.98 MHz

48.75 ÷ 49.51 MHz

49.66 ÷ 50 MHz

Cordless telephones

≤ 183 µW ERP

≥ 32 dBc at a distance of 3 m

18

50.01 ÷ 50.99 MHz

Remote control of aircraft models (of a type of radio remote control)

≤ 100 mW ERP

≥ 40 dBc at transmitter output

19

72.00 ÷ 72.99 MHz

Remote control of aircraft models (of a type of radio remote control)

≤ 1 W ERP

≥ 40 dBc at transmitter output

20

87 ÷ 108 MHz

Cordless audio devices (excluding private FM transmitters)

≤ 3 µW ERP

≥ 32 dBc at a distance of 3 m

Individual FM transmitters (of a type of cordless audio device)

≤ 20 nW ERP

21

146.35 ÷ 146.5 MHz

Radio alarm and detection devices

≤ 100 mW ERP

≥ 40 dBc at transmitter output

22

156.025 ÷ 162.025 MHz

AIS-Automatic Identification System

≤ 7.7 W ERP (12.5 W EIRP)

According to spurious emission limit 9

23

161.9625 ÷ 161.9875 MHz

162.0125 ÷ 162.0375 MHz

Automatic Identification System  -  Search and Rescue Radar Transponder (AIS-SART)

≤ 7.7 W ERP (12.5 W EIRP)

According to spurious emission limit 10

24

182.025 ÷ 182.975 MHz

Cordless audio devices

≤ 30 mW ERP

≥ 40 dBc at transmitter output

25

216 ÷ 217 MHz

Medical and biological applications (of a type of radio telemetry device)

≤ 10 µW ERP

≥ 40 dBc at transmitter output

26

217.025 ÷ 217.975 MHz

Wireless audio system

≤ 30 mW ERP

≥ 40 dBc at transmitter output

27

218.025 ÷ 218.475 MHz

Wireless audio system

≤ 30 mW ERP

≥ 40 dBc at transmitter output

28

240.15 ÷ 240.30 MHz

Radio alarm and detection devices

≤ 100 mW ERP

≥ 40 dBc at transmitter output

29

300.00 ÷ 300.33 MHz

Radio alarm and detection devices

≤ 100 mW ERP

≥ 40 dBc at transmitter output

30

312 ÷ 316 MHz

Radio alarm and detection devices

≤ 100 mW ERP

≥ 40 dBc at transmitter output

Radio remote controls

31

401 ÷ 406 MHz

Medical Implant Communications Systems (MICS)

≤ 25 µW ERP

According to spurious emission limit 2

32

401 ÷ 402 MHz

403.5 ÷ 403.8 MHz

405 ÷ 406 MHz

Medical Implant Telemetry Systems (MITS)

≤ 100 nW ERP

33

406.0 ÷ 406.1 MHz

EPIRB-Emergency Position Indicating Radio Beacon

≤ 12.2 W ERP

≥ 20 dBc at offset ± 3 kHz to ± 7 kHz compared to the carrier frequency;

≥ 30 dBc at offset ± 7 kHz to ± 12 kHz compared to the carrier frequency;

≥ 35 dBc at offset ± 12 kHz to ± 24 kHz compared to the carrier frequency;

≥ 40 dBc at offset -24kHz compared to the frequency 406.0 MHz;

≥ 40 dBc at offset +24kHz compared to the frequency  406.1 MHz;

34

433.05 ÷ 434.79 MHz

Radio frequency identification devices

≤ 10 mW ERP

≥ 32 dBc at a distance of 3 m

Radio remote controls

≥ 40 dBc at transmitter output

Radio telemetry devices

≥ 40 dBc at transmitter output

35

444.4 ÷ 444.8 MHz

Radio alarm and detection devices

≤ 100 mW ERP

≥ 40 dBc at transmitter output

36

446.0 ÷ 446.2 MHz

Low-power radio communication device

≤ 500 mW ERP

According to spurious emission limit 8

37

470 ÷ 694MHz

Cordless audio devices

≤ 30mW ERP

≥ 40 dBc at transmitter output

38

866 ÷ 868 MHz

Radio frequency identification devices

≤ 500 mW ERP

According to spurious emission limit 2

39

918 ÷ 923 MHz

Radio frequency identification devices

≤ 500 mW ERP [*]

According to spurious emission limit 2

 

40

918 ÷ 923 MHz

Non-specific SRDs

≤ 25 mW ERP

According to spurious emission limit 2

41

1880 ÷ 1900 MHz

Cordless telephones

≤ 250 mW EIRP [2]

 

According to spurious emission limit 2

42

2400 ÷ 2483.5 MHz

Short range radiocommunication devices using spread spectrum modulation technique

≤ 100 mW EIRP and ≤ 100 mW/100KHz EIRP for devices using FHSS modulation or ≤ 10 mW/1MHz EIRP for devices using other modulations

According to spurious emission limit 3

WLAN device

≤ 200 mW EIRP

Wireless video transmitters

100 mW EIRP

According to spurious emission limit 2

Non-specific SRD

10 mW EIRP

According to spurious emission limit 2

43

2446 ÷ 2454 MHz

Radio frequency identification devices

≤ 500 mW EIRP

According to spurious emission limit 2

44

4200 ÷ 4800 MHz

UWB-Ultra Wide Band Communication Device

≤ -70 dBm/MHz (average power)

≤ -30 dBm/50 MHz (peak power)

No specified

45

5150 ÷ 5250 MHz

WLAN devices

Broadband data transmission device

≤ 200 mW EIRP and ≤ 10 mW/MHz

According to spurious emission limit 4

46

5250 ÷ 5350 MHz

WLAN devices

≤ 200 mW EIRP and ≤ 10 mW/MHz

According to spurious emission limit 4

47

5470 ÷ 5725 MHz

WLAN devices

Broadband data transmission device

≤ 1 W EIRP

≤ 50 mW/MHz

According to spurious emission limit 4

48

5725 ÷ 5850 MHz

WLAN devices

Broadband data transmission device

≤ 1 mW EIRP

≤ 50 mW/MHz

According to spurious emission limit 4

Wireless video transmitter

≤ 100 mW EIRP

According to spurious emission limit 2

Non-specific SRDs

≤ 25 mW EIRP

According to spurious emission limit 2

49

9200 ÷ 9500 MHz

SART-Search and Rescue Radar Transponder

≥ 400 mW EIRP

No specified

50

10.5 ÷ 10.55 GHz

Wireless video transmitters

≤ 100 mW EIRP

According to spurious emission limit 2

51

24 ÷ 24.25 GHz

Wireless video transmitters

≤ 100 mW EIRP

According to spurious emission limit 2

Radio telemetry devices

Non-specific SRDs

52

57 ÷ 66 GHz

Broadband data transmission device

£ 10 W EIRP

According to spurious emission limit 2

53

61 ÷ 61.5 GHz

Non-specific SRDs

£ 100 mW EIRP

According to spurious emission limit 5

54

76 ÷ 77 GHz

 

Automotive Radar

£ 316.23 W EIRP

According to spurious emission limit 6

55

77 ÷ 81 GHz

Automotive Radar

£ 316.23 W EIRP (RBW 50 MHz)

£ 0.5 mW/MHz EIRP

According to spurious emission limit 7

56

122 ÷ 122.25 GHz

Non-specific SRDs

£ 10 mW EIRP (RBW 250 MHz)

According to spurious emission limit 6

57

122.25 ÷ 123 GHz

Non-specific SRDs

£ 100 mW EIRP

According to spurious emission limit 6

58

244 ÷ 246 GHz

Non-specific SRDs

£ 100 mW EIRP

According to spurious emission limit 6

 

1 ERP: Effective Radiated Power

2 EIRP: Equivalent Isotropically Radiated Power.

(*): Radio identification device used in intelligent traffic systems (non-stop electronic toll) with power above 500 mW up to 2000 mW. ERP is used in the 920-923 MHz band shall have a radio frequency license.

 

 

 

 

 

 

 

 

 

2. Classification of spurious emission limit

2.1. Spurious emission limit 1

Frequency (f)

Limit in operation mode

Limit in stanby mode

9 kHz ≤ f ≤ 10 MHz

22 μA/m (27 dB μA/m) in the frequency 9 kHz less 3dB/frequency interval

1,99 μA/m (6 dB μA/m) in the frequency 9 kHz  less 3dB/ frequency interval

10 MHz ≤ f ≤ 30 MHz

0.67 μA/m (-3.5 dB μA/m)

0.06 μA/m (-24.5 dB μA/m)

47 MHz ≤ f ≤ 74 MHz;
87.5 MHz ≤ f ≤ 118 MHz;

174 MHz ≤ f ≤ 230 MHz;
470 MHz ≤ f ≤ 862 MHz

-54 dBm (4nW)

-57 dBm (2nW)

Other frequencies within 30 MHz and 1000 MHz

-36 dBm (250nW)

 

2.2. Spurious emission limit 2

Frequency (f)

Limit in operation mode

Limit in stanby mode

47 MHz ≤ f ≤ 74 MHz;
87.5 MHz ≤ f ≤ 118 MHz; 174 MHz ≤ f ≤ 230 MHz;
470 MHz ≤ f ≤ 862 MHz

-54 dBm (4nW)

-57 dBm (2nW)

In the other frequencies below 1000 MHz

-36 dBm (250nW)

-57 dBm (2nW)

In the frequency  f ≥ 1000 MHz

-30 dBm (1µW)

-47 dBm (20nW)

2.3. Spurious emission limit 3

a.     Spurious emission in narrow bands

Frequency (f)

Limit in operation mode

Limit in stanby mode

30 MHz ≤ f ≤ 1 GHz

-36 dBm (250nW)

-57 dBm (2nW)

1.8 MHz  ≤ f ≤ 1.9 GHz;
5.15 GHz ≤ f ≤  5.3 GHz

-47 dBm (20nW)

-47 dBm (20 nW)

1 GHz ≤ f ≤ 12.75 GHz

-30 dBm (1µW)

-47 dBm (20 nW)

b.    Spurious emission in broad band

Frequency (f)

Limit in operation mode

Limit in stanby mode

30 MHz ≤ f ≤ 1 GHz

-86 dBm/Hz

-107 dBm/Hz

1.8 MHz  ≤ f ≤ 1.9 GHz;
5.15 GHz ≤ f ≤  5.3 GHz

-97 dBm/Hz

-97 dBm/Hz

1 GHz ≤ f ≤ 12.75 GHz

-80 dBm/Hz

-97 dBm/Hz

 

2.4. Spurious emission limit 4

Frequency (f)

Limit

47 MHz ≤ f ≤ 74 MHz; 87.5 MHz ≤ f ≤ 118 MHz;
174 MHz ≤ f ≤ 230 MHz; 470 MHz ≤ f ≤ 862 MHz

-54 dBm/100 kHz

Other frequencies within 30 MHz and 1000 MHz

-36 dBm/100 kHz

1 GHz ≤ f ≤ 26.5 GHz

-30 dBm/1 MHz

 

 

 

 

 

 

2.5. Spurious emission limit 5

Frequency (f)

Limit

47 MHz ≤ f ≤ 74 MHz; 87.5 MHz ≤ f ≤ 118 MHz;
174 MHz ≤ f ≤ 230 MHz; 470 MHz ≤ f ≤ 862 MHz

-54 dBm/100 kHz

Other frequencies within 30 MHz and 1000 MHz

-36 dBm/100 kHz

1 GHz ≤ f ≤ 132 GHz

-30 dBm/1 MHz

2.6.  Spurious emission limit 6

Frequency (f)

Limit

47 MHz ≤ f ≤ 74 MHz; 87.5 MHz ≤ f ≤ 118 MHz;
174 MHz ≤ f ≤ 230 MHz; 470 MHz ≤ f ≤ 862 MHz

-54 dBm/100 kHz

Other frequencies within 30 MHz and 1000 MHz

-36 dBm/100 kHz

1 GHz ≤ f ≤ 300 GHz

-30 dBm/1 MHz

2.7.  Spurious emission limit 7

Frequency (f)

Limit

47 MHz ≤ f ≤ 74 MHz; 87.5 MHz ≤ f ≤ 118 MHz;
174 MHz ≤ f ≤ 230 MHz; 470 MHz ≤ f ≤ 862 MHz

-54 dBm/100 kHz

Other frequencies within 30 MHz and 1000 MHz

-36 dBm/100 kHz

1 GHz ≤ f ≤ 100 GHz

-30 dBm/1 MHz

2.8.  Spurious emission limit 8

Frequency (f)

Limit in operation mode

Limit in stanby mode

f 1000 MHz

-36 dBm (250nW)

-57 dBm (2nW)

1 GHz < f ≤ 4 GHz

-30 dBm (1µW)

-47 dBm (20 nW)

 

 

 

 

 

2.9. Spurious emission limit 9

Transmitting mode:

Frequency (f)

Limit

108 MHz ≤ f ≤ 137 MHz;
156 MHz ≤ f ≤ 161.5 MHz;

-16 dBm (25 mW)

1525 MHz ≤ f ≤ 1610 MHz

-16 dBm (25 mW)

Off mode:

Frequency (f)

Limit

30 MHz ≤ f ≤ 1000 MHz;

-57 dBm (2 nW)

1000 MHz ≤ f ≤ 2000 MHz

-47 dBm (20 nW)

2.10.Spurious emission limit 10

Frequency (f)

Limit

108 MHz ≤ f ≤ 137 MHz;
156 MHz ≤ f ≤ 161.5 MHz;

406.0 MHz ≤ f ≤ 406.1 MHz;

1525 MHz ≤ f ≤ 1610 MHz

-16 dBm (25 mW)

 

 

Annex 3

TECHNICAL AND OPERATION CONDITIONS FOR NON SPECIFIC SRDs WHICH CAN BE USED UNDER SPECIFIED CONDITIONS

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

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

≥ 40 dBc at transmitter output

 

40.66-40.7 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

 

918 ÷ 923 MHz

≤ 25 mW ERP

According to spurious emission limit 2

- Frequency band 918-918.4 MHz is used as the radio frequency band protecting the radio communication system using the adjacent frequency band. Organizations and individuals concerned do not install device operating in this band.

- Equipment must have LBT (Listen Before Talk) function or device must operate at a Duty cycle not exceeding 1%.

2400 ÷ 2483.5 MHz

≤ 10 mW EIRP

According to spurious emission limit 2

 

≤ 100 mW EIRP and ≤ 100 mW/100KHz EIRP for devices using FHSS modulation or ≤ 10 mW/1MHz EIRP for devices using other modulations

According to spurious emission limit 3

- Equipment using spreading technique.

- Some general-purpose shortwave wireless devices, such as Bluetooth and Zigbee modems, smart wristwatches, control smart home device.

5725 ÷ 5850 MHz

≤ 25 mW EIRP

According to spurious emission limit 2

 

24 ÷ 24.25 GHz

£ 100 mW EIRP

According to spurious emission limit 2

 

61 ÷ 61.5 GHz

£ 100 mW EIRP

According to spurious emission limit 6

 

122 ÷ 122.25 GHz

£ 10 mW EIRP (RBW 250 MHz)

According to spurious emission limit 6

 

122.25 ÷ 123 GHz

£ 100 mW EIRP

According to spurious emission limit 6

 

244 ÷ 246 GHz

£ 100 mW EIRP

According to spurious emission limit 6

 

 

                   

 

Annex 4

TECHNICAL AND OPERATION CONDITIONS FOR CORDLESS TELEPHONES WHICH CAN BE USED UNDER SPECIFIED CONDITIONS

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

43.71 ÷ 44.00 MHz

≤ 183 mW ERP

≥ 32 dBc at a distance of 3 m

- Frequency band for center block

- Device only used the phone method generator frequency (F3E) or phase modulation (G3E).

48.75 ÷ 49.51 MHz

≤ 183 mW ERP

≥ 32 dBc at a distance of 3 m

- Frequency band for mobile block

- Device only used the phone method generator frequency (F3E) or phase modulation (G3E).

46.60 ÷ 46.98 MHz

≤ 183 mW ERP

≥ 32 dBc at a distance of 3 m

- Frequency band for center block

- Device only used the phone method generator frequency (F3E) or phase modulation (G3E).

49.66 ÷ 50 MHz

≤ 183 mW ERP

≥ 32 dBc at a distance of 3 m

- Frequency band for mobile block

- Device only used the phone method generator frequency (F3E) or phase modulation (G3E).

1880 ÷ 1900 MHz

≤ 250 mW EIRP

According to spurious emission limit 2

- Device is only used in the home (Indoor use).

 

Annex 5

TECHNICAL AND OPERATION CONDITIONS FOR MEDICAL IMPLANT COMMUNICATIONS SYSTEMS (MICS) AND MEDICAL IMPLANT TELEMETRY SYSTEMS (MITS), WHICH LICENSE EXEMPT USE OF RADIO FREQUENCY

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

401 ÷ 406 MHz

25 mW ERP

According to spurious emission limit 2

- Frequency band for MICS equipment

- The occupied channel width is not greater than 300 kHz.

- MICS equipment must have at least 9 frequency channels distributed throughout the 401 ÷ 406 MHz band.

- MICS devices must use the Listen Before Transmit protocol.

- MICS devices are only played when there is external control. In the event of an emergency, when detecting incidents that may endanger the life or health of the sick person, MICS devices are permitted to transmit data immediately.

401 ÷ 402 MHz;

403.5 ÷ 403.8 MHz;

405 ÷ 406MHz

100 nW ERP

According to spurious emission limit 2

Frequency band for MITS equipment

 

 

Annex 6

TECHNICAL AND OPERATION CONDITIONS FOR RADIO FREQUENCY IDENTIFICATION DEVICES (RFID)

(Attached to Circular No. 46/2016/TT-BTTTT dated on December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

115 ÷ 150 kHz

≤ 4.5 mW ERP

According to spurious emission limit 1

- The center frequencies of 125 kHz and 134.2 kHz

13.553 ÷ 13.567 MHz

≤ 4.5 mW ERP

According to spurious emission limit 1

- The center frequency of 13.56 MHz

433.05 ÷ 434.79 MHz

≤ 10 mW ERP

≥ 32 dBc at a distance of 3 m

- the center frequency of 433.92 MHz

866 ÷ 868 MHz

≤ 500 mW ERP

According to spurious emission limit 2

- The center frequency of channel n calculated according to the formula: 865.9 MHz + 0.2 MHz * n; n = 1 ÷ 10

918 ÷ 923 MHz

≤ 500 mW ERP (*)

According to spurious emission limit 2

- The 918-918.4 MHz frequency band is used as a radio frequency band protecting radio communications systems using adjacent bands. Organizations and individuals concerned do not install equipment operating in this band.

- The maximum permissible bandwidth of the hopping channel at 20 dB is 500 kHz.

- Radio frequency identification devices operating in the 918 ÷ 923 MHz band shall use the frequency hopping spread spectrum modulation.

2446 ÷ 2454 MHz

≤ 500 mW EIRP

According to spurious emission limit 2

 

(*) Radio identification equipment used in intelligent traffic systems (non-stop electronic fees) with transmit power levels above 500 mW to 2000 mW. ERP is used in the band 920-923 MHz when available. Radio frequency use license

 

Annex 7

TECHNICAL AND OPERATION CONDITIONS FOR RADIO DETECTION AND ALARM DEVICES

(Attached to Circular No. 46/2016/TT-BTTTT dated on December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

16 ÷ 150 kHz

≤ 4.5 mW ERP

According to spurious emission limit 1

13.553 ÷ 13.567 MHz

≤ 4.5 mW ERP

According to spurious emission limit 1

29.7 ÷ 30.0 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

146.35 ÷ 146.5 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

240.15 ÷ 240.30 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

300 ÷ 300.33 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

312 ÷ 316 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

444.4 ÷ 444.8 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

 

 

Annex 8

TECHNICAL AND OPERATION CONDITIONS FOR WIRELESS AUDIO SYSTEM

(Attached to Circular No. 46/2016/TT-BTTTT dated on December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

3.155 ÷ 3.400 MHz

≤ 13.5 dBµA/m a distance of 10 m

According to spurious emission limit 1

- For hearing aids only.

10.2 ÷ 11 MHz

≤ 4 mW

According to spurious emission limit 1

- For hearing aids only.

- Channel width is not greater than 200 kHz and must be within the specified band.

40.66 ÷ 40.70 MHz

 

≤ 100 mW

≥ 40 dBc at transmitter output

Channel width is not greater than 200 kHz and must be within the specified band

87 ÷ 108 MHz

 

≤ 20 nW ERP

≥ 32 dBc at a distance of 3 m

- Personal FM transmitters are only available in the 87 ÷ 108 MHz band.

- Channel width is not greater than 200 kHz and must be within the specified band.

87 ÷ 108 MHz

 

≤ 3mW ERP

≥ 32 dBc at a distance of 3 m

- Frequency band for wireless audio equipment (excluding personal FM transmitter).

- Channel width is not greater than 200 kHz and must be within the specified band.

182.025 ÷ 182.975 MHz

 

≤ 30 mW ERP

≥ 40 dBc at transmitter output

- Channel width is not greater than 200 kHz and must be within the specified band.

217.025 ÷ 217.975 MHz

 

≤ 30 mW ERP

≥ 40 dBc at transmitter output

- Channel width is not greater than 200 kHz and must be within the specified band.

218.025 ÷ 218.475 MHz

 

≤ 30 mW ERP

≥ 40 dBc at transmitter output

- Channel width is not greater than 200 kHz and must be within the specified band.

470 ÷ 694 MHz

≤ 30 mW ERP

≥ 40 dBc at transmitter output

- Wireless audio equipment for events.

- Channel width is not greater than 200 kHz and must be within the specified band.

- Have the ability to automatically adjust and adjustable operating frequency.

- Equipment cannot be used locally when the used frequency is the same as that of the local broadcasting.

- The minimum distance between the center frequency of the operating device with the adjacent broadcasting channels in the operating area is 400 kHz.

- The Shall not cause interference to television in the operating area.

 

 

Annex 9

TECHNICAL AND OPERATION CONDITIONS FOR RADIO REMOTE CONTROL

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

115 ÷ 150 kHz

≤ 4.5 mW ERP

According to spurious emission limit 1

 

26.957 ÷ 27.283 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

 

29.7 ÷ 30.0 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

 

34.995 ÷ 35.225 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

 

40.02 ÷ 40.98 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

- Only used for controls of aircraft models

40.66 ÷ 40.70 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

 

50.01 ÷ 50.99 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

- Only used for controls of aircraft models

72.00 ÷ 72.99 MHz

≤ 1 W ERP

≥ 40 dBc at transmitter output

- Only used for controls of aircraft models

312 ÷ 316 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

 

433.05 ÷ 434.79 MHz

≤ 10 mW ERP

≥ 40 dBc at a distance of 3 m

 

 

 

Annex 10

TECHNICAL AND OPERATION CONDITIONS FOR WIRELESS LOCAL NETWORK DEVICES

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

2400 ÷ 2483.5 MHz

≤ 200 mW EIRP

According to spurious emission limit 3

 

5150 ÷ 5250 MHz

≤ 200 mW EIRP and 10 mW/MHz EIRP

According to spurious emission limit 4

- Only indoor use.

 

5250 ÷ 5350 MHz

≤ 200 mW EIRP and 10 mW/MHz EIRP

According to spurious emission limit 4

- Equipment must be capable of selecting dynamic frequency channels (DFS).

- Transmitter Power Control (TPC).

5470 ÷ 5725 MHz

≤ 1 W EIRP and 50 mW/MHz

According to spurious emission limit 4

- Equipment must be capable of selecting dynamic frequency channels (DFS).

- Transmitter Power Control (TPC). This requirement is not required for radio access systems operating in the 5470 ÷ 5725 MHz band with a capacity of less than 500 mW EIRP.

5725 ÷ 5850 MHz

≤ 1 W EIRP and 50 mW/MHz

According to spurious emission limit 4

 

 

 

Annex 11

TECHNICAL AND OPERATIONAL REQUIREMENTS FOR RADIO TELEMETRY DEVICES

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

26.957 ÷ 27.283 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

 

29.70 ÷ 30.00 MHz

≤ 100 mW ERP

≥ 40 dBc at transmitter output

 

40.50 ÷ 41.00 MHz

≤ 0.01 mW ERP

≥ 32 dBc at transmitter output

- Pnly used for medical and biological applications

216 ÷ 217 MHz

≤ 0.01 mW ERP

≥ 40 dBc at transmitter output

- Only used for medical and biological applications

433.05 ÷ 434.79 MHz

≤ 10 mW ERP

≥ 40 dBc at a distance of 3 m

 

24 ÷ 24.25 GHz

≤ 100 mW EIRP

According to spurious emission limit 2

 

 

 

Annex 12

TECHNICAL AND OPERATION CONDITIONS FOR WIRELESS VIDEO TRANSMITTERS

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

2400 ÷ 2483.5 MHz

≤ 100 mW EIRP

According to spurious emission limit 2

5725 ÷ 5850 MHz

≤ 100 mW EIRP

According to spurious emission limit 2

10.50 ÷ 10.55 GHz

≤ 100 mW EIRP

According to spurious emission limit 2

24.00 ÷ 24.25 GHz

≤ 100 mW EIRP

According to spurious emission limit 2

 

 

Annex 13

TECHNICAL AND OPERATION CONDITIONS FOR BROADBAND DATA TRANSMISSION DEVICE

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

5150 ÷ 5250 MHz

≤ 200 mW EIRP and 10 mW/MHz EIRP

According to spurious emission limit 4

- Only indoor use.

 

5250 ÷ 5350 MHz

≤ 200 mW EIRP and 10 mW/MHz EIRP

According to spurious emission limit 4

- Equipment must be capable of selecting dynamic frequency channels (DFS).

- Equipment must be capable of Transmitter Power Control (TPC).

5470 ÷ 5725 MHz

≤ 1 W EIRP and 50 mW/MHz

According to spurious emission limit 4

- Equipment must be capable of selecting dynamic frequency channels (DFS).

- Transmitter Power Control (TPC). This requirement is not required for radio access systems operating in the 5470 ÷ 5725 MHz band with a capacity of less than 500 mW EIRP.

5725 ÷ 5850 MHz

≤ 1 W EIRP and 50 mW/MHz

According to spurious emission limit 4

 

57 ÷ 66 GHz

£ 10 W EIRP

According to spurious emission limit 5

- Equipment required to use integrated antenna.

- Do not install the device in a fixed outdoor position.

 

Annex 14

TECHNICAL AND OPERATION CONDITIONS FOR UWB – ULTRA WIDE BAND COMMUNICATION DEVICE

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

4200 ÷ 4800 MHz

£ -70 dBm/MHz (Average power)

≤ -30 dBm/50 MHz (Peak power)

- No specified

- Limits of emission power at other bands shall comply with Note 1.

- Use of equipment in indoor environment or equivalent radio-shielding environment;

- Do not use the device on the plane.

Note 1:

Frequency (f)

The average power spectral density  (EIRP)

The peak power spectral density limitation, on a 50 MHz bandwidth (EIRP)

f 1.6 GHz

-90 dBm/MHz

-50 dBm

1.6 GHz < f ≤ 2.7 GHz

-85 dBm/MHz

-45 dBm

2.7 GHz < f ≤ 3.1 GHz

-70 dBm/MHz

-36 dBm

3.1 GHz < f ≤ 3.4 GHz

-70 dBm/MHz

-36 dBm

3.4 GHz < f ≤ 3.8 GHz

-80 dBm/MHz

-40 dBm

3.8 GHz < f ≤ 4.2 GHz

-70 dBm/MHz

-30 dBm

4.8 GHz < f ≤ 6 GHz

-70 dBm/MHz

-30 dBm

6 GHz < f ≤ 8.5 GHz

-41,3 dBm/MHz

0 dBm

8.5 GHz < f ≤ 9 GHz

-65 dBm/MHz

-25 dBm

9 GHz < f ≤ 10.6 GHz

-65 dBm/MHz

-25 dBm

f > 10.6 GHz

-85 dBm/MHz

-45 dBm

 

 

Annex 15

TECHNICAL AND OPERATION CONDITIONS FOR AUTOMOTIVE RADAR

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

76 ÷ 77 GHz

£ 316.23 W EIRP (Peak power)

According to spurious emission limit 7

77 ÷ 81 GHz

£ 316.23 W EIRP (Peak power, measured in 50 MHz bandwidth) and £ 0.5 mW/MHz EIRP (Average power spectral density)

According to spurious emission limit 7

 

 

Annex 16

TECHNICAL AND OPERATION CONDITIONS FOR INDUCTIVE LOOP

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

9 ÷ 148.5 kHz

≤ 42 dBµA/m measured at a distance of 10 m

According to spurious emission limit 1

6.765 ÷ 6.795 MHz

≤ 42 dBµA/m measured at a distance of 10 m

According to spurious emission limit 1

326.5 kHz

340 kHz

≤ -15 dBµA/m measured at a distance of 10 m (On a bandwidth of 10 kHz)

According to spurious emission limit 1

 

 

Annex 17

TECHNICAL AND OPERATION CONDITIONS FOR RADIO DEVICE PLACED ON FISHING BOAT

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

26.96 MHz ÷ 27.41 MHz

≤ 12 W ERP (single sideband modulation: AM / SSB)

≤ 4 W ERP (Double-sideband modulation amplitude or angle modulation: AM / SSB, FM / AM)

According to spurious emission limit 2

 

 

 

 

- This band is divided into 40 channels from 1 to 40, each frequency channel corresponding to the center frequencies and intended use according to Note 1.

- Note 2

  • Note 1: Central frequency and purpose of use of frequency channels

Chanel

Central frequency [MHz]

Uses

 

Chanel

Central frequency [MHz]

Uses

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

Call 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

Call channel

39

27.395

20

27.205

Communication channel

40

27.405

 

In the table above, the types of Channels are defined as follows:

  • Safety and rescue channel is dedicated channel for information safety and rescue.
  • Communication channel is channels for communication and exchange of information.
  • Call channel is a dedicated channel for establishing a call.

Note 2:

1.1.    Condition of using safety and rescue channel

1.1.1. In case of emergency, danger to life and marine facilities, in addition to using channel 9 (reserved for safety and rescue information), organizations and individuals to submit information or signals research can also transmit to attract attention on whatever channel of the frequency channel arrangement table.

1.1.2. Upon receiving the information, the emergency signal, the radio station must immediately stop broadcasting on frequencies that may cause interference to emergency information and must listen constantly on emergency frequency, reply and implement all necessary assistance immediately and notify search and rescue agencies.

1.2.    Condition of using call channel

1.2.1.   Call channel (channel 11 and channel 19) is only used to set up calls between fishing boats.

1.2.2.   Call channel is used only for a maximum period of 1 minute. Call station give name can call the name of the station being called (repeated 3 times) on the call channel.  after receiving the response of the the called station, call station specifies the communication channel to two stations switched to the same channel at the communication channel. Do not communicate at call channel.

1.3. Condition of using communication channel

1.3.1.   Communication channel is selected from among 37 channels of the frequency channel arrangement Table (except safety, rescue and call channel).  In the process of working, can be converted to other communication channels to avoid interference if have interference due to other sations.

1.3.2. Communication channel is only used for a period of up to 5 minutes, in case of extending contact, after 5 minutes, must pause for a minute before continue to contact

1.4.  The prohibited acts:

1.4.1.   Using power that excess the transmit power limit specified in point 3 of this Annex.

1.4.2.   Causing harmful interference to safety and rescue channel.

1.4.3. Using safety and rescue channel for the purpose of establishing the call and contact.

1.4.4.   Using call channel for the purpose of communicating (except emergency information).

1.4.5. Occupying the communication channel continuously than 5 minutes or transmitting any carrier that alternate between calls.

1.4.6.   Transmitting call signal, identification signal continuously, repeating on call channel that exceeding 1 minute.

1.4.7.   Transmitting identification signal simultaneously on two or more frequencies if only contact with another station.

 

Annex 18

TECHNICAL AND OPERATION CONDITIONS FOR LOW-POWER RADIO COMMUNICATION DEVICE

(Attached to Circular No. 46/2016/TT-BTTTT dated on December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

446.00 ÷ 446.2 MHz

£ 500 mW ERP

According to spurious emission limit 8

- The device uses digital technology with a frequency channel width of 6.25 kHz or 12.5 kHz.

- Center frequency of 12.5 kHz channels: 446,00625 + n * 0,0125 (n = 0 to 15)

- Center frequencies of 6.25 kHz channels: 446,003125 + n * 0.00625 (n = 0 to 31)

- Equipment required to use integrated antenna. The equipment shall be designed so that it is not capable of adjusting the frequency beyond the 446-446.2 MHz band and shall not be capable of increasing the power level above 500 mW.

- The device must be able to interrupt when the talk time exceeds 180 (s).

- Low-power radio communication equipment operating in the band 446.0 - 446.2 MHz and complying with the relevant technical and exploitation conditions shall be exempted from the radio frequency use permit from January 01, 2020.

- It is recommended to perform frequency channel check before making contact to avoid interference.

 

 

Annex 19

TECHNICAL AND OPERATION CONDITIONS FOR AUTOMATIC IDENTIFICATION SYSTEM

(Attached to Circular No. 46/2016/TT-BTTTT December 26, 2016 of the Ministry of Information and Communications)

FREQUENCY BAND

PRINCIPAL EMISSION

(maximum output power)

SPURIOUS EMISSION

(maximum power or minimum emission attenuation)

OTHER CONDITIONS

156.025 ÷ 162.025 MHz (*)

≤ 7.7 W ERP (12.5 W EIRP)

According to spurious emission limit 9

Automatic Identification System (ASI)

406.0 ÷ 406.1 MHz

≤ 12.2 W ERP

≥ 20 dBc at offset ± 3 kHz to ± 7 kHz compared to the carrier frequency;

≥ 30 dBc at offset ± 7 kHz to ± 12 kHz compared to the carrier frequency;

≥ 35 dBc at offset ± 12 kHz to ± 24 kHz compared to the carrier frequency;

≥ 40 dBc at offset -24kHz compared to the frequency 406.0 MHz;

≥ 40 dBc at offset +24kHz compared to the frequency  406.1 MHz.

EPIRB-Emergency Position Indicating Radio Beacon

9200 ÷ 9500 MHz

≥ 400 mW EIRP

No specified

Search and Rescue Radar Transponder (SART).

161.9625 ÷ 161.9875 MHz

162.0125 ÷ 162.0375 MHz

≤ 7.7 W ERP (12.5 W EIRP)