Chapter III Receiving Equipment
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| (Limit on Secondary Radiated Emissions, etc.) |
| Article 24. |
The limit on secondary emissions radiated from the receiving equipment
prescribed in Article 29 of the Law within which the function of other
radio equipment will not be impaired shall be, in terms of the power
of a dummy antenna circuit that has the same electrical constant as
the receiving antenna, 4 nW or lower as measured using the circuit.
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| 2 |
Notwithstanding the provisions of the preceding paragraph,
the limit on the secondary emissions radiated from the receiving
equipment at a specified low-power radio station which uses
emissions of a frequency from 2,400 MHz to 2,483.5 MHz, at a
premises radio station which uses emissions of a frequency in
the range higher than 2,425 MHz to 2,475 MHz and uses a frequency
hopping system, at the radio station of a low-power data communication
system, and at a premises radio station using the 19 GHz band,
shall be as stipulated in the following table: |
|
| Frequency band |
Limit on secondary
radiated emissions |
| Lower than 1 GHz |
4 nW or lower |
| 1 GHz or higher to lower than 10 GHz |
20 nW or lower |
| 10 GHz or higher |
Specified low-power radio station which uses a frequency from
2,400 MHz to 2,483.5 MHz or a premises radio station which uses
emissions of a frequency in the range higher than 2,425 MHz
to 2,475 MHz and uses a frequency hopping system, and the radio
station of a low-power data communication system |
20 nW or lower |
| Premises radio station using emissions of the
19 GHz band frequencies |
20 µW or lower |
|
| 3 |
Notwithstanding the provisions of paragraph 1, the limit on
secondary emissions radiated from the receiving equipment at
a radio station that performs CDMA portable radio communication
or at a radio station that performs communication, etc. for
testing CDMA portable radio communication equipment, both of
which use the emissions of a frequency in a range of higher
than 832 MHz to 834 MHz, higher than 838 MHz to 846 MHz, higher
than 860 MHz to 885 MHz, higher than 887 MHz to 889 MHz, higher
than 893 MHz to 901 MHz or higher than 915 MHz to 940 MHz, a
radio station that performs time division multiplexing/code
division multiplexing portable radio communication, and a radio
station which performs communication, etc. for testing time
division multiplexing/code division multiplexing portable radio
communication equipment shall be as stipulated below:
| 1) |
Receiving equipment at a base station
| a |
For a frequency in a range of higher than 887
MHz to 889 MHz, higher than 893 MHz to 901 MHz,
or higher than 915 MHz to 940 MHz, 10 pW or lower
for any 30 kHz band |
| b |
For a frequency in a range of higher than 832
MHz to 834 MHz, higher than 838 MHz to 846 MHz,
higher than 843 MHz to 846 MHz, or higher than 860
MHz to 885 MHz, 1 nW or lower for any 30 kHz band |
| c |
For a frequency other than those defined in a
and b, 4 nW or lower for any 30 kHz band |
|
| 2) |
Receiving equipment at a land mobile station
| a |
For a frequency in a range of higher than 832
MHz to 834 MHz, higher than 838 MHz to 846 MHz,
higher than 843 MHz to 846 MHz, or higher than 860
MHz to 885 MHz, 8 pW or lower for any 1 MHz band |
| b |
For a frequency in a range of higher than 887
MHz to 889 MHz, higher than 893 MHz to 901 MHz,
higher than 898 MHz to 901 MHz, or higher than 915
MHz to 940 MHz, 800 pW or lower for any 1 MHz band |
| c |
For a frequency other than those defined in a
and b, 4 nW or lower for any 30 kHz band |
|
|
| 4 |
Notwithstanding the provisions of paragraph 1, the limit on
the secondary emissions radiated from the receiving equipment
at a radio station that performs CDMA portable radio communication
and that uses emissions of a frequency in a range of higher
than 1,920 MHz to 1,980 MHz, a radio station that performs communication,
etc. for testing CDMA portable radio communication equipment,
a radio station that performs time division multiplexing/code
division multiplexing portable radio communication, and a radio
station that performs communication, etc. for testing time division
multiplexing/code division multiplexing portable radio communication
equipment shall be as stipulated below.
| 1) |
Receiving equipment at a base station that receives
a signal whose spread code speed is 3.84 megachips/s
| a |
For a frequency from 1,920 MHz to 1,980 MHz, -78
dB (with 1 mW regarded as 0 dB) or lower for any
3.84 MHz band |
| b |
For a frequency from 30 kHz to lower than 1,000
MHz, -57 dB (with 1 mW regarded as 0 dB) or lower
for any 100 kHz band |
| c |
For a frequency from 1,000 MHz to 12.75 GHz (excluding
the frequency specified in a), -47 dB (with 1 mW
regarded as 0 dB) or lower for any 1,000 kHz band |
|
| 2) |
Receiving equipment at a base station that receives
a signal whose spread code speed is 1.2288 megachips/s
or 3.6864 megachips/s
| a |
For a frequency from 1,920 MHz to 1,980 MHz, -80
dB (with 1 mW regarded as 0 dB) or lower for any
30 kHz band |
| b |
For a frequency from 2,110 MHz to 2,170 MHz, -60
dB (with 1 mW regarded as 0 dB) or lower for any
30 kHz band |
| c |
For a frequency from 30 MHz to lower than 1,000
MHz, -57 dB (with 1 mW regarded as 0 dB) or lower
for any 100 kHz band |
| d |
For a frequency from 1,000 MHz to 12.75 GHz (excluding
frequencies other than those specified in a and
b above), -47 dB (with 1 mW regarded as 0 dB) or
lower for any 1,000 kHz band |
|
| 3) |
Receiving equipment at a land mobile station that receives
a signal whose spread code speed is 3.84 megachips/s
| a |
For a frequency from 1,920 MHz to 1,980 MHz and
from 2,110 MHz to 2,170 MHz, -60 dB (with 1 mW regarded
as 0 dB) or lower for any 3.84 MHz band |
| b |
For a frequency from 30 MHz to lower than 1,000
MHz, -57 dB (with 1 mW regarded as 0 dB) or lower
for any 100 kHz band |
| c |
For a frequency from 1,000 MHz to 12.75 GHz (excluding
the frequency specified in a), -47 dB (with 1 mW
regarded as 0 dB) or lower for any 1,000 kHz band |
|
| 4) |
Receiving equipment at a land mobile station that receives
a signal whose spread code speed is 1.2288 megachips/s
| a |
For a frequency from 2,110 MHz to 2,170 MHz, -76
dB (with 1 mW regarded as 0 dB) or lower for any
1 MHz band |
| b |
For a frequency from 1,920 MHz to 1,980 MHz, -61
dB (with 1 mW regarded as 0 dB) or lower for any
1 MHz band |
| c |
For a frequency from 30 MHz to lower than 1,000
MHz, -57 dB (with 1 mW regarded as 0 dB) or lower
for any 100 kHz band |
| d |
For a frequency from 1,000 MHz to 12.75 GHz (excluding
frequencies specified in a and b above), -47 dB
(with 1 mW regarded as 0 dB) or lower for any 1,000
kHz band |
|
|
| 5 |
Notwithstanding the provisions of paragraph 1, the limit on
the secondary emissions radiated from the receiving equipment
at a portable mobile earth station that performs portable mobile
satellite communication using emissions of a frequency in a
range of 1,621.35 MHz to 1,626.5 MHz shall be the value announced
separately (*2) by the Minister of Public Management, Home Affairs,
Posts and Telecommunications. |
| 6 |
Notwithstanding the provisions of paragraph 1, the limit on
the secondary emissions radiated from the receiving equipment
at a base station of a DSRC system and at a radio station that
performs communication for testing radio equipment at a land
mobile station of a DSRC system shall be the value announced
separately by the Minister of Public Management, Home Affairs,
Posts and Telecommunications. |
| 7 |
Notwithstanding the provisions of paragraph 1, the limit on
the secondary emissions radiated from the receiving equipment
at a specified low-power radio station using emissions of a
frequency in a range of higher than 10.5 GHz to 10.55 GHz or
higher than 24.05 GHz to 24.25 GHz shall be 2.5 µW
or lower. |
| 8 |
Notwithstanding the provisions of paragraph 1, the limit on
the secondary emissions radiated from the receiving equipment
at a radio station using emissions of a frequency in a range
of higher than 54.25 GHz to 59 GHz shall be 50 µW
or lower. |
| 9 |
Notwithstanding the provisions of paragraph 1, the limit on
the secondary emissions radiated from the receiving equipment
at a specified low-power radio station using emissions of a
frequency in a range of higher than 59 GHz to 66 GHz or higher
than 76 GHz to 77 GHz shall be 100 µW or lower. |
| 10 |
Notwithstanding the provisions of paragraph 1, the limit on
the secondary emissions radiated from the receiving equipment
at a radio station that performs 22 GHz, 26 GHz or 38 GHz band
subscriber radio access communication and at a radio station
that performs the radio access communication prescribed in Article
7 paragraph 25 item 2) shall be as stipulated in the following
table.
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|
| Frequency band |
Limit on secondary emissions radiated |
| Lower than 1 GHz |
4 nW or lower |
| 1 GHz or higher |
20 nW or lower |
|
(Announcements:
*1 in No. 659 in 1997 and *2 in No. 530 in 1997)
(Other Conditions) |
| Article 25. |
Receiving equipment should preferably satisfy the conditions defined
in the items below:
| 1) |
Low internal noise |
| 2) |
Sufficient sensitivity |
| 3) |
Appropriate selectivity |
| 4) |
Sufficient intelligibility
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|
| (Receiving Antenna) |
| Article 26. |
The provisions related to transmitting antennas shall apply mutatis
mutandis to receiving antennas. |
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