Narrow-band digital communication radio

Narrow-band digital communication radio (Item 25-4 of Article 2 Paragraph 1 of Certification Ordinance)
Narrow-band digital communication radio with automatic frequency selection function (Item 25-5 of Article 2 Paragraph 1 of Certification Ordinance)
Narrow-band digital communication radio with frequency tracking function (Item 25-6 of Article 2 Paragraph 1 of Certification Ordinance)

Items		Technical standards
Class of emissions		----
Assigned frequency or designated frequency		142 - 170MHz 255 - 275MHz 335.4 - 470MHz
Number of channels or channel separation		6.25 kHz 12.5 kHz 25 kHz
Tolerance of frequency (×10^-6)		See the Attached Table 1
Tolerance of occupied bandwidth		6.25kHz channel separation : 5.8 kHz 12.5kHz channel separation : 11.5 kHz 25kHz channel separation : 24.3 kHz
Tolerance of spurious and unwanted emission intensity	1W or less	25µW
	Over 1W	-60dB and 2.5µW
Antenna power	Designated value	50W or less
	Tolerance	+20%, -50%
Tolerance of adjacent channel leakage power	1W or less	-45dB
	Over 1W	32µW and -55 dB
Limit of secondary radiated emissions		4nW
Overall operation test		Frequency tracking function: When equipment has a function of automatic frequency correction (frequency tracking function), the frequency obtained by receiving radio wave transmitted from a land station (reference station) shall be used as the reference.
Note		----

Attached Table 1 Tolerance of frequency (×10^-6)

Radio station			Channel separation
Radio station			6.25kHz	12.5kHz	25kHz
142 - 170MHz	Land mobile station, portable station		±2.5 ±2 + A*	±3	±3
255 - 275MHz	Land mobile station, portable station	1W or less	±2.5 ±2.3 + A*	±3	±3
255 - 275MHz	Land mobile station, portable station	Over 1W	±1.5 ±1.3 + A*	±2.9 ±2.4 + A*	±2.0 ±1.5 + A*
335.4 - 470MHz	Land mobile station, portable station	1W or less	±1.5 ±0.7 + A*	±3	±3
335.4 - 470MHz	Land mobile station, portable station	Over 1W	±0.9 ±0.7 + A*	±1.7 ±1.2 + A*	±1.2 ±0.7 + A*

The values marked with "*" are effective only for the use of frequency tracking function.

The "A" is frequency error (A ×10^-6) of reference station.

Notice: Regulations in the Ordinance Regulating Radio Equipment shall have priority over the descriptions in the sheet when any difference is found between them. Further above descriptions do not cover all of the regulations.