Recommendation itu-r sm. 1538-1 Technical and operating parameters and spectrum requirements for short range radiocommunication devices




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2.4 Citizen band transceiver


The transceivers using the citizen bands shall comply with the spectrum requirements and the technical criteria according to the MIC Notification as described in Table 21.

TABLE 21



Frequency band

Frequencies
(MHz)


Class of emission

Occupied bandwith (kHz)

Antenna power
(W)


27 MHz band

26.965, 26.975, 26.985,
27.005, 27.015, 27.025, 27.035, 27.055, 27.065(1),
27.075, 27.085, 27.105, 27.115, 27.125, 27.135, 27.155, 27.165, 27.175, 27.185(2) , 27.205,
27.215, 27.225, 27.235, 27.245, 27.255, 27.265, 27.275, 27.285, 27.295, 27.305, 27.315, 27.325, 27.335, 27.345, 27.355, 27.365, 27.375, 27.385, 27.395, 27.405

A3E, H3E,
J3E, F3E

 16

 3

TABLE 21 (end)




Frequency band

Frequencies
(MHz)


Class of emission

Occupied bandwith (kHz)

Antenna power
(W)


400 MHz
band

Simplex

448.7375(3),
448.7500, 448.7625, 448.7750, 448.7875, 448.8000, 448.8125, 448.8250, 448.8375, 448.8500, 448.8625, 448.8750, 448.8875, 448.9000, 448.9125, 448.9250, 449.1500, 449.1625, 449.1750, 449.1875, 449.2000, 449.2125, 449.2250, 449.2375, 449.2500, 449.2625

F3E, G3E

 8.5

 0.5

Duplex

424.1375 (449.1375)(3),
424.1500 (449.1500), 424.1625 (449.1625),
424.1750 (449.1750), 424.1875 (449.1875),
424.2000 (449.2000), 424.2125 (449.2125),
424.2250 (449.2250), 424.2375 (449.2375),
424.2500 (449.2500), 424.2625 (449.2625)

(1) For emergency communication (fire alarm, etc.).

(2) For meteorological, medical, traffic guide, etc.

(3) For channel control.


2.5 Specified low-power radio station


The specified low-power radio stations are classified into nine applications as follows:

– Data transmission

– Radio paging

– Vehicle identification system (type of RFID)

– Data communication and wireless LAN

– Wireless microphone

– Radio control and safety system

Video transmission

– Inducement of visually handicapped person

– Dedicated short-range communications.

The spectrum requirements and the technical criteria for the specified low-power radio stations for these applications are established in the MIC Notification as follows:

2.5.1 For data transmission


TABLE 22


Frequency band
(MHz)


Type of
emission


Antenna
power
(mW)


Occupied
bandwidth
(kHz)


219.000 (224.000)

219.025 (224.025)

219.050 (224.050)

219.075 (224.075)

219.100 (224.100)

219.125 (224.125)



F(G)1D

F(G)2D


 10

 16

424.7000

424.7125-424.7250

424.7375-424.7500

424.7625-424.7750

424.7875-424.8000

424.8125-424.8250

424.8375-424.8500

424.8625-424.8750

424.8875-424.9000

424.9125-424.9250

424.9375-424.9500


F(G)1D

F(G)2D


 10

 8.5

NOTE 1 – The frequencies 219.000 (224.000) MHz and 424.7000 MHz shall be used for channel control.

NOTE 2 – The frequencies in parentheses are the corresponding frequencies in case of full-duplex or semi-duplex operation.
The frequency tolerance:

– for the equipment using the frequency band of 200 MHz: 7  10–6, and

 for the equipment using the frequency band of 400 MHz: 4  10–6.

The adjacent channel power ratio shall be 40 dB or greater.

The antenna gain should be equal to or less than 2.14 dBi.

The equipment should be designed to ensure that the continuous transmission time to be no longer than 40 s, the pause time to be longer than 1 s between the transmissions, and occupation of frequency for channel control to be no longer than 0.2 s.

When receiving the radio signal at a specific frequency from other specified low-power radio stations with more than 2 V, the equipment should not transmit a signal with the same radio frequency. The specified low-power radio equipment for data transmission should be equipped with a code identification memory device in order to prevent malfunction of the other equipment and to safeguard against the interference signal from other equipment.

2.5.2 Radio paging


TABLE 23


Frequency band (MHz)

Type of
emission


Antenna
power
(mW)


Occupied
bandwidth
(kHz)


219.150

219.175


219.200

219.225


F(G)1B(D)

F(G)2B(D)

F(G)3E

F(G)9W


 10

 16

The frequency tolerance should be equal to or less than 7  10–6.


2.5.3 Vehicle identification system


TABLE 24

Frequency band
(MHz)


Type of emission

Antenna power
(mW)


2.440 (2.427-2.453)

2.445 (2.434-2.465)

2.455 (2.439-2.470)


NON

AID


AXN

 300

NOTE 1 – The frequency bands in parenthesis are bands of the assigned frequencies.


2.5.4 Data communication and wireless LAN


TABLE 25


Frequency band
(MHz)


Type of
emission


Antenna power

2.400-2.480

F(D,G)1(2,7)
C(D,E,F,W)

FHSS

3 mW (peak power divided by hopping bandwidth (MHz))

ETC(1)

10 mW/MHz

5.725-5.825

F(G)1D
F(G)2D

FHSS

3 mW (peak power divided by hopping bandwidth (MHz))

ETC(1)

10 mW/MHz

17.705-17.715

17.725-17.735

19.265-19.275

19.285-19.295



F(G)1D

F(G)2D


10 mW

(1) Only spread spectrum technology is allowed.

Radio equipment using direct spread-spectrum technique in the frequency band of 2.400 2.483.5 MHz and 5.725-5.825 MHz shall comply with the following conditions:

– The absolute gain of the transmitting antenna shall be equal to or less than 6 dBi (20 dBi for fixed point-to-point application).

– The frequency tolerance should be equal to or less than 50  10–6.

– The antenna power should be equal to or less than 10 mW/MHz.

– The occupied bandwidth should be equal to or less than 26 MHz.

Radio equipment using frequency hopping spread-spectrum technique in the frequency band of 2.400-2.483.5 MHz and 5.725-5.825 MHz shall comply with the following conditions:

– The absolute gain of the transmitting antenna shall be equal to or less than 6 dBi (20 dBi for fixed point-to-point application).

– The antenna power should be equal to or less than 10 mW/MHz.

– The occupied bandwidth should be equal to or less than 5 MHz/channel.

Radio equipment for wireless LAN applications using the frequency band of 5.725 5.825 MHz, which does not use the spread spectrum technique, shall comply with the following conditions:

– The centre frequency should be 5.775 MHz.

– The non-directional antenna must be built in.

– The frequency tolerance should be equal to or less than 100  10–6.

– The occupied bandwidth should be equal to or less than 70 MHz.

Radio equipment for wireless LAN applications used in the frequency band of 17 GHz and 19 GHz should be adapted to the following conditions.

– The non-directional antenna must be built in.

– The frequency tolerance should be equal to or less than 50  10–6.

– The occupied bandwidth should be equal to or less than 10 MHz.

2.5.5 Wireless microphone


The class of emission radiated from transmitter should be F(G)3E, F(G)8W or F(G)9W.

The antenna power should be equal to or less than 10 mW.

Frequency band, permissible occupied bandwidth and maximum permissible frequency deviation should be as described in Table 26.

TABLE 26



Frequency band
(MHz)


Occupied bandwidth
(kHz)


Maximum frequency deviation
(kHz)


72.610-73.910
74.000-74.800
75.620-75.790

60

22


173.020-173.280
217.250-220.110
223.000-225.000
740.000-752.000
928.000-930.000
950.000-952.000

200

75


2.5.6 Radio controller and security system


TABLE 27


Applications

Frequency band
(MHz)


Type of emission

Antenna power
(mW)


Occupied bandwidth
(kHz)


Wireless equipment for radio
control

Industrial use

173.6250, 173.6375, 173.6500,
173.6625, 173.6750, 173.6875,
173.7000, 173.7125, 173.7250,
173.7275, 173.7500, 173.7625,
173.7750, 173.7875

F(G)1D
F(G)2D

 10

 8.5

447.8625, 447.8750, 447.8875,
447.9000, 447.9125, 447.9250,
447.9375, 447.9500, 447.9625,
447.9750, 447.9875

F(G)1D
F(G)2D

 10

 8.5

General
use

Automatic
door control,
starting
device for
cars, etc.

173.0250, 173.0375, 173.0500,
173.0625, 173.0750, 173.0875,
173.1000, 173.1125, 173.1250,
173.1375, 173.1500, 173.1625,
173.1750, 173.1875, 173.2000,
173.2125, 173.2250, 173.2375,
173.2500, 173.2625, 173.2750

F(G)1D
F(G)2D

 5

 8.5


447.6000, 447.6125, 447.6250,
447.6375. 447.6500, 447.6625,
447.6750, 447.6875, 447.7000,
447.7125, 447.7250, 447.7375,
447.7500, 447.7625, 447.7750,
447.7875, 447.8000, 447.8125,
447.8250, 447.8375, 447.8500

F(G)1D
F(G)2D

 5

 8.5

Starting
device for
cars

311.0125, 311.0250, 311.0375,
311.0500, 311.0625, 311.0750,
311.0875, 311.1000, 311.1125,
311.1250

A1D
A2D
F(G)1D
F(G)2D

 5

 8.5

Wireless equipment for security system (burglar, fire warning system, etc.)

447.2625, 447.2750, 447.2875,
447.3000, 447.3125, 447.3250,
447.3375, 447.3500, 447.3625,
447.3750, 447.3875, 447.4000,
447.4125, 447.4250, 447.4375,
447.4500, 447.4625, 447.4750,
447.4875, 447.5000, 447.5125,
447.5250, 447.5375, 447.5500,
447.5625

F(G)1D
F(G)2D



 10

 8.5

The frequency tolerance shall be equal to or less than 7  10–6.

The wireless equipments for radio control and safety system should be equipped with a code identification memory device in order to prevent malfunction due to the signal of other equipment and the malfunction of other equipment.

2.5.7 Video transmission


TABLE 28


Frequency band (MHz)

Class of
emission


Antenna
power
(mW)


Occupied
bandwidth
(kHz)


2 410
2 430
2 450
2 470

A2F
F2F
A9W
F9W

 10

 16

Transmitting antenna should use a directional or non-directional antenna.

Frequency tolerance should be equal to or less than 50  10–6.

2.5.8 Inducement of visually handicapped person


TABLE 29


Applications

Frequency band (MHz)

Type of
emission


Antenna
power
(mW)


Occupied
bandwidth
(kHz)


Wireless equipment for the inducement of visually handicapped person

Fixed equipment

235.3000
235.3125
235.3250
235.3375

F(G)2D
F(G)3E

 10

 8.5

Mobile equipment

358.5000
358.5125
358.5250
358.5375

F(G)2D

 10

 8.5

Frequency deviation should be within 2.5 kHz of the carrier frequency for the demodulation.

Frequency tolerance of emission should be equal to or less than 7  10–6 of the assigned frequency.

Adjacent channel power ratio should be equal to or greater than 40 dB.

Absolute gain of the transmitting antenna should be equal to or less than 2.14 dB.

Equipment should be equipped with a code identification memory device in order to prevent malfunction of other equipment and to safeguard from the interference signal from other equipment.


2.5.9 Dedicated short range communication


TABLE 30


Applications

Frequency band
(MHz)


Type of
emission


Antenna
power
(mW)


Dedicated short range communication for private use (intelligent transport system)

5 800 (5 795-5 805)
5 810 (5 805-5 815)

A7W

 10


2.6 Measurement instruments


This category includes standard electric field generator, signal generator, etc.

2.7 Receiver


Receivers used for the sake of safety in maritime and aeronautical navigation or for radio astronomy/space radiocommunication services, which are the subject of registration by the National Authority according to Article 28 of the Presidential Decree for Radio Law, were excluded from this category.

2.8 Type registered stations installed indoors, underground or in a tunnel for terrestrial radiocommunication service


Radio equipment in this category cannot be installed without the agreement of the communication service provider and the antenna power for each assigned frequency should be equal to or less than 10 mW.

The spectrum requirement and technical criteria shall be the same as those of the system and that are applied for the radio equipment for the specific service.
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