| Section
8 |
Radio Equipment of Radio Stations Using
Angularly Modulated Emissions, etc. |
|
| (Conditions for the Transmitter) |
| Article 57.3. |
The transmitter for radio equipment at a fixed station, a radio
station in the portable mobile service, and a radio station in the
land mobile service that uses class FIB, F1C, F1D, F1E, F1F, F1N,
F1X, G1B, G1C, G1D, G1E, G1F, G1N, or G1X emissions of frequencies
in a range of higher than 54 MHz to 960 MHz, or frequencies in a range
of higher than 1,215 MHz to 2,690 MHz shall comply with the conditions
defined in the items below, except for transmitters at radio stations
that perform aeronautical radio telephone communication using emissions
of frequencies in a range of higher than 830 MHz to 887 MHz, radio
stations that perform communication, etc. for testing aeronautical
radio telephone communication equipment, radio stations that perform
TDMA portable radio communication, radio stations that perform communication,
etc. for testing TDMA portable radio communication equipment, radio
stations that perform CDMA portable radio communication, radio stations
that perform communication, etc. for testing CDMA portable radio communication
equipment, radio stations that perform time division multiplexing/code
division multiplexing portable radio communication, radio stations
that perform communication, etc. for testing time division multiplexing/code
division multiplexing portable radio communication equipment, radio
stations that perform MCA land mobile communication using emissions
of frequencies in a range of higher than 850 MHz to 915 MHz, radio
stations that perform communication, etc. for testing MCA land mobile
communication equipment, radio stations that perform digital MCA land
mobile communication using emissions of frequencies in a range of
higher than 836 MHz to 915 MHz, or higher than 1,453 MHz to 1,525
MHz, radio stations that perform communication, etc. for testing digital
MCA land mobile communication equipment, radio stations for cordless
telephones, radio stations for digital cordless telephones, land mobile
stations for personal handy phone systems, base stations for personal
handy phone systems, radio stations that perform communication, etc.
for testing personal handy phone system communication equipment, specified
low-power radio stations, radio stations for low-power security systems,
radio stations for low-power data communication systems, radio stations
of the narrow-area digital communication method prescribed in the
next Article, fixed stations that perform 1,900 MHz band subscriber
radio access communication, radio stations that perform communication,
etc. for testing 1,900 MHz band subscriber radio access communication
equipment, and radio stations announced separately (*1) by the Minister
of Public Management, Home Affairs, Posts and Telecommunications when
it is considered too difficult or irrational to apply the conditions
defined in the items below:
| 1) |
The modulation signal shall consist of pulses, and its transmission
rate shall be 8 kilobits/s or less. For a radio station that
uses emissions of frequencies in a range of higher than 1,215
MHz to 2,690 MHz, and a radio station announced separately (*2)
by the Minister of Public Management, Home Affairs, Posts and
Telecommunications, however, the transmission rate shall be
16 kilobits/s or less. |
| 2) |
The frequency deviation shall be as follows.
| a |
When the transmission rate of a modulation signal is
4 kilobits/s or less, the frequency deviation shall be
within ±2 kHz with respect to the frequency of an
unmodulated carrier. |
| b |
When the transmission rate of a modulation signal is
in a range of higher than 4 kilobits/s to 8 kilobits/s,
the frequency deviation shall be within ±4 kHz with
respect to the frequency of an unmodulated carrier. |
| c |
When the transmission rate of a modulation signal exceeds
8 kilobits/s, the frequency deviation shall be within
±8 kHz with respect to the frequency of an unmodulated
carrier. |
|
| 3) |
When a standard coding test signal having the same transmission
rate as that of a modulation signal is used for modulation,
adjacent channel leakage power values shall be as follows.
| a |
When the transmission rate of a modulation signal is
4 kilobits/s or less, the electric power radiated in the
±2 kHz band with respect to the frequency distant
from the carrier frequency by 6.25 kHz shall be lower
than the power of the carrier by 60 dB or more. |
| b |
When the transmission rate of a modulation signal is
in a range of higher than 4 kilobits/s to 8 kilobits/s,
the electric power radiated in the ±4 kHz band with
respect to the frequency distant from a carrier frequency
by 12.5 kHz shall be lower than the power of the carrier
by 60 dB or more. |
| c |
When the transmission rate of a modulation signal exceeds
8 kilobits/s, the electric power radiated in the ±8
kHz band with respect to the frequency distant from a
carrier frequency by 25 kHz shall be lower than the power
of the carrier by 60 dB or more. |
|
(Announcements: *1 in No. 108 in 1997 and *2 in No.
771 in 1986)
|
| (Radio Equipment of Radio Stations Using Narrow-band
Digital Communication Method) |
| Article 57.3.2. |
The radio equipment at a radio station of the narrow-band digital
communication method which uses emissions of a frequency in a range
of higher than 142 MHz to 170 MHz, higher than 255 MHz to 275 MHz,
or higher than 335.4 MHz to 470 MHz shall comply with the conditions
in the items below. However, this shall not apply to the radio equipment
at specified low-power radio stations, radio stations for low-power
security systems, coast stations, aeronautical stations, amateur stations,
convenience radio stations, and radio stations announced separately
(*1) by the Minister of Public Management, Home Affairs, Posts and
Telecommunications when it is considered too difficult or irrational
to apply the conditions in the items below:
| 1) |
The modulation method shall be 4 value digital modulation
or 16 value digital modulation. |
| 2) |
The channel interval shall be as follows:
| a |
The radio equipment which uses 4 value digital modulation
shall comply with the conditions in the items below:
| (1) |
6.25 kHz/carrier ((2) and (3) shall be excluded). |
| (2) |
12.5 kHz when the multiplexing number per carrier
in TDMA is 2, or 12.5 kHz in the case of TDMA (including
dusimplex operation; hereafter referred to as "TDMA")
or when the number of channels per carrier in TDMA
is 2 (however, it shall be 1 in the case of time
division duplex operation). |
| (3) |
25 kHz when the multiplexing number per carrier
in the time division multiplexing method is 4 (however,
it shall be 2 in the case of time division duplex
operation), or when the number of channels per carrier
in TDMA is 4 (however, it shall be 2 in the case
of time division duplex operation). |
|
| b |
The radio equipment which uses 16 value digital modulation
shall comply with the conditions in the items below:
| (1) |
6.25 kHz/carrier ((2) and (3) shall be excluded). |
| (2) |
12.5 kHz when the multiplexing number per carrier
in the time division multiplexing method is 4 (however,
it shall be 2 in the case of time division duplex
operation), or when the number of channels per carrier
in TDMA is 4 (however, it shall be 2 in the case
of time division duplex operation). |
| (3) |
25 kHz when the multiplexing number per carrier
in the time division multiplexing method is 6 or
when the number of channels per carrier in TDMA
is 6. |
|
|
| 3) |
The adjacent channel leakage power in the case of modulation
using a standard coding test signal with the same transmission
rate as that of the modulation signal shall comply with the
conditions in the items below:
| a |
The radio equipment that uses 4 value digital modulation
shall comply with the conditions in the items below:
| (1) |
In the case of radio equipment whose channel
interval is 6.25 kHz, the power radiated into the
±R band (R shall be 1/4 of the transmission
rate of the modulation signal; this also applies
hereafter in item a) of the frequency 6.25 kHz distant
from the carrier frequency shall be lower than the
carrier power by 55 dB or more or 32 W or less.
However, it shall be lower by 45 dB or more in the
case of radio stations of 1 W or less. |
| (2) |
In the case of radio equipment whose channel
interval is 12.5 kHz, the power radiated into the
±R band of the frequency 12.5 kHz distant
from the carrier frequency shall be lower than the
carrier power by 55 dB or more or 32 µW
or less. However, it shall be lower by 45 dB or
more in the case of radio stations of 1 W or less. |
| (3) |
In the case of radio equipment whose channel interval
is 25 kHz, the power radiated into the ±R
band of the frequency 25 kHz distant from the carrier
frequency shall be lower than the carrier power
by 55 dB or more or 32 µW or less. However,
it shall be lower by 45 dB or more in the case of
radio stations of 1 W or less. |
|
| b |
The radio equipment that uses 16 value digital modulation
shall comply with the conditions in the items below:
| (1) |
In the case of radio equipment whose channel
interval is 6.25 kHz, the power radiated into the
±R band (R shall be 1/4 of the transmission
rate of the modulation signal; this also applies
hereafter in item a) of the frequency 6.25 kHz distant
from the carrier frequency shall be lower than the
carrier power by 55 dB or more or 32 W or less.
However, it shall be lower by 45 dB or more in the
case of radio stations of 1 W or less. |
| (2) |
In the case of radio equipment whose channel
interval is 12.5 kHz, the power radiated into the
±R band of the frequency 12.5 kHz distant
from the carrier frequency shall be lower than the
carrier power by 55 dB or more or 32 µW
or less. However, it shall be lower by 45 dB or
more in the case of radio stations of 1 W or less. |
| (3) |
In the case of radio equipment whose channel interval
is 25 kHz, the power radiated into the ±R
band of the frequency 25 kHz distant from the carrier
frequency shall be lower than the carrier power
by 55 dB or more or 32 µW or less. However,
it shall be lower by 45 dB or more in the case of
radio stations of 1 W or less. |
|
|
|
| 2 |
In the case of radio equipment which radiates emissions of
a frequency automatically selected by receiving emissions from
a land station which is the other party of the communication,
the communication method shall be duplex operation or dusimplex
operation. |
| 3 |
The radio equipment which has a frequency tracking function
shall comply with the frequency obtained by receiving emissions
from a reference station in addition to the conditions in the
preceding paragraph.
|
|
| Article 58. |
The transmitter for radio equipment at a radio station that uses
class F2A, F2B, F2C, F2D, F2N, F2X, or F3E emissions shall comply
with the conditions defined in the items below, except for transmitters
at radio stations in the aeronautical mobile service (excluding aircraft
stations that use emissions of frequencies listed in the table in
Appendix S18 of the Radio Regulations), broadcasting stations, radio
stations that perform broadcast relay, radio stations that perform
aeronautical radio telephone communication using emissions of frequencies
in a range of higher than 830 MHz to 887 MHz, radio stations that
perform communication, etc. for testing aeronautical radio telephone
communication equipment, radio stations that perform MCA land mobile
communication using emissions of frequencies in a range of higher
than 850 MHz to 915 MHz, radio stations that perform communication,
etc. for testing MCA land mobile communication equipment, radio stations
that perform airport radio telephone communication using emissions
of frequencies in a range of higher than 830 MHz to 887 MHz, radio
stations that perform communication, etc. for testing airport radio
telephone communication equipment, land mobile stations for specified
radio microphones, radio stations for cordless telephones, specified
low-power radio stations, radio stations for low-power security systems,
radio stations for low-power data communications systems, experimental
stations, convenience radio stations (excluding those using emissions
of frequencies in a range of higher than 335.4 MHz to 470 MHz), amateur
radio stations, premises radio stations , and radio stations announced
separately (*) by the Minister of Public Management, Home Affairs,
Posts and Telecommunications when it is considered too difficult or
irrational to apply the conditions defined in the items below:
| 1) |
The modulation frequency shall not exceed 3,000 Hz. |
| 2) |
The transmitter which uses emissions of frequencies in a range
of higher than 54 MHz to 70 MHz, higher than 142 MHz to 162.0375
MHz, higher than 450 MHz to 470 MHz, or higher than 1,215 MHz
to 2,690 MHz (limited to the transmitter for on-board communication
equipment using emissions of frequencies in a range of higher
than 450 MHz to 467.58 MHz for emissions of frequencies in a
range of higher than 450 MHz to 470 MHz) shall provide a frequency
shift that does not exceed ±5 kHz with respect to the
frequency of an unmodulated carrier, and the transmitter which
uses emissions of frequencies in a range of higher than 335.4
MHz to 470 MHz, or higher than 810 MHz to 960 MHz (excluding
the transmitter for on-board communication equipment using emissions
of frequencies in a range of higher than 450 MHz to 467.58 MHz)
shall provide a frequency shift that does not exceed ±2.5
kHz with respect to the frequency of an unmodulated carrier. |
| 3) |
An automatic controller that prevents the frequency shift
from exceeding the value defined in the previous item shall
be supported (except for the transmitter which provides an antenna
power of 1 W or less (limited to the transmitter for on-board
communication equipment using emissions of frequencies in a
range of higher than 450 MHz to 467.58 MHz when emissions of
frequencies in a range of higher than 335.4 MHz to 470 MHz are
used)). |
| 4) |
A low-pass filter (limited to a low-pass filter that provides
the ratio of attenuation at each of the frequencies of 3 kHz
to 15 kHz to attenuation at 1 kHz that is equal to or greater
than the value determined by the expression in the right-hand
column in the table below according to the transmitter classification
in the left-hand column of the table) shall be installed between
the automatic controller defined in the preceding item and the
modulator.
|
|
| Transmitter classification |
Expression for determining the attenuation ratio |
| Transmitter using emissions of frequencies in a range of higher
than 54 MHz to 70 MHz, or higher than 142 MHz to 162.0375 MHz,
or a transmitter in on-board communication equipment using emissions
of frequencies in a range of higher than 450 MHz to 467.58 MHz |
40log10(f/3) dB
In this table, f indicates a frequency (in kHz) from 3 kHz to
15 kHz. |
| Transmitter using emissions of frequencies in a range of higher
than 335.4 MHz to 470 MHz, or higher than 810 MHz to 960 MHz
(excluding the transmitter for on-board communication using
emissions of frequencies in a range of higher than 450 MHz to
467.58 MHz) |
80log10(f/3) dB |
| Transmitter using emissions of frequencies in a range of higher
than 1,215 MHz to 2,690 MHz, |
60log10(f/3) dB |
|
| |
| 5) |
When the input voltage higher by 10 dB than the input voltage
required for modulation of 60% of the maximum frequency shift
at a frequency of 1,250 Hz is applied, adjacent channel leakage
power values shall be as follows.
| a |
For the transmitter which uses emissions of frequencies
in a range of higher than 335.4 MHz to 470 MHz, or higher
than 810 MHz to 690 MHz (excluding the transmitter for
on-board communication equipment using emissions of frequencies
in a range of higher than 450 MHz to 467.58 MHz), the
electric power radiated in the ±4.25 kHz band with
respect to the frequency distant from the frequency of
a carrier by 12.5 kHz shall be lower than the power of
the carrier by 60 dB or more. |
| b |
For the transmitter which uses emissions of frequencies
in a range of higher than 1,215 MHz to 2,690 MHz, the
electric power radiated in the ±8 kHz band with
respect to the frequency distant from the frequency of
a carrier by 25 kHz shall be lower than the power of the
carrier by 60 dB or more. |
|
(Announcement: * in No. 63 in 1984)
|
| (Conditions for the Receiver) |
| Article 58.2. |
The receiver at a radio station in the maritime mobile service that
uses class F2A, F2B, F2D, F2N, F2X, or F3E emissions of frequencies
in a range of higher than 54 MHz to 70 MHz, or higher than 142 MHz
to 162.0375 MHz shall comply with the conditions prescribed in the
right-hand column of the table below according to the classification
in the left-hand column thereof, except for receivers at radio stations
that provide an antenna power of 1 W or less, radio stations defined
in Article 40.2 paragraph 1 (including cases where the paragraph is
also applicable to Article 45.12.4; this also applies to the next
paragraph), and radio stations announced separately (*) by the Minister
of Public Management, Home Affairs, Posts and Telecommunications when
it is considered too difficult or irrational to apply the conditions
defined in this Article.
|
| Classification |
Condition |
| Sensitivity |
The receiver input voltage required for making the noise suppression
20 dB shall be 2 µV or less. |
| One-signal selectivity |
Passing bandwidth |
The bandwidth of a 6 dB reduction shall be 12 kHz or more. |
| Attenuation |
The bandwidth of a 70 dB reduction shall be within 25 kHz. |
| Spurious response |
80 dB or more |
| Effective selectivity |
Desensitization effect |
When a disturbing wave distant from a desired signal by 20
kHz or more is applied with the applied desired input voltage
higher by 6 dB than the receiver input voltage required for
making the noise suppression 20 dB, the disturbing wave input
voltage generated when noise suppression of 20 dB is achieved
shall be 10 mV or more. |
| Intermodulation characteristics |
When disturbing waves that generate intermodulation with no
desired signal are applied at an input voltage of 1.78 mV, the
noise suppression level shall be 20 dB or less. |
| Frequency variations in a local oscillator |
Within 0.001% |
| Overall distortion and noise |
When a receiver input voltage of 10 µV modulated
up to 70% of the maximum frequency shift at a frequency of 1,000
Hz is applied, the ratio of the total device output to the unwanted
elements contained within it shall be 20 dB or more. |
|
| 2 |
The receiver at the radio station defined in Article 40.2
paragraph 1 (excluding the receiver defined in the next Article)
shall satisfy the technical conditions announced separately
(*2).
(Announcements: *1 in No. 63 in 1984 and *2
in No. 622 in 1970)
|
|
| Article 58.2.2. |
The receiver at a radio station in the maritime mobile service that
uses class F2A, F2B, F2D, F2N, F2X, or F3E emissions of frequencies
in a range of higher than 335.4 MHz to 470 MHz (excluding the receiver
for on-board communication equipment that uses emissions of frequencies
in a range of higher than 450 MHz to 467.58 MHz) shall comply with
the conditions prescribed in the right-hand column of the table below
according to classifications defined in the left-hand column thereof,
except for receivers at radio stations announced separately (*) by
the Minister of Public Management, Home Affairs, Posts and Telecommunications
when it is considered too difficult or irrational to apply the conditions
defined in this Article.
|
| Classification |
Condition |
| Sensitivity |
The standard sensitivity (which refers to the
receiver input voltage required for making the ratio of the
sum of device signal, noise, and distortion output to the sum
of noise and distortion output 12 dB when a desired signal modulated
up to 60% of the maximum frequency shift at a frequency of 1,000
Hz is applied; this also applies hereafter) is 2 µV
or less. |
| Passing bandwidth for one-signal
selectivity |
8 kHz or more when the receiver input voltage
for making the noise suppression level 20 dB is applied |
| Effective selectivity |
Spurious response |
When a disturbing wave modulated up to 60% of
the maximum frequency shift at a frequency of 400 Hz is applied
with the applied desired input voltage higher than the standard
sensitivity by 3 dB, the ratio of the disturbing wave input
voltage to the standard sensitivity when the ratio of the sum
of device signal, noise, and distortion output to the sum of
noise and distortion output is 12 dB shall be 70 dB or more
(50 dB or more for the receiver for a radio station that provides
an antenna power of 1 W or less). |
| Adjacent channel selectivity |
When a disturbing wave distant from a desired
wave by 12.5 kHz and modulated up to 60% of the maximum frequency
shift at a frequency of 400 Hz is applied with the applied desired
input voltage higher than the standard sensitivity by 3 dB,
the ratio of the disturbing wave input voltage to the standard
sensitivity when the ratio of the sum of device signal, noise,
and distortion output to the sum of noise and distortion output
is 12 dB shall be 60 dB or more. |
| Intermodulation characteristics |
When disturbing waves that generate intermodulation
are applied with the applied desired input voltage higher than
the standard sensitivity by 3 dB, the ratio of the disturbing
wave input voltage to the standard sensitivity when the ratio
of the sum of device signal, noise, and distortion output to
the sum of noise and distortion output is 12 dB shall be 70
dB or more (60 dB or more for the receiver for a radio station
that provides an antenna power of 1 W or less). |
| Frequency variations in a local oscillator |
Within 0.0003% (within 0.0004% for the receiver
for a radio station that provides an antenna power of 1 W or
less) |
| Overall distortion and noise |
When a receiver input voltage of 10 µV
modulated up to 70% of the maximum frequency shift at a frequency
of 1,000 Hz is applied, the ratio of the total device output
to the unwanted elements contained within it shall be 20 dB
or more. |
|
| 2 |
The receiver for on-board communication equipment that uses
class F3E emissions of frequencies in a range of higher than
450 MHz to 467.58 MHz (excluding the receiver which provides
an antenna power of 1 W or less) shall satisfy the conditions
prescribed in the right-hand column of the table below according
to the classification in the left-hand column thereof.
|
|
| Classification |
Condition |
| Sensitivity |
The receiver input voltage required for making
the noise suppression level 20 dB shall be 2.5 µV
or less. |
| One-signal selectivity |
Passing bandwidth |
12 kHz or more |
| Attenuation |
The bandwidth of a 70 dB reduction shall be within
30 kHz. |
| Spurious response |
70 dB or more |
| Effective selectivity |
Desensitization effect |
When a disturbing wave distant from a desired
signal by 25 kHz or more is applied with the applied desired
input voltage higher by 6 dB than the receiver input voltage
required for making the noise suppression level 20 dB, the disturbing
wave input voltage when the noise suppression level is 20 dB
shall be 3.16 mV or more. |
| Intermodulation characteristics |
When disturbing waves that generate intermodulation
with no desired signal are applied at an input voltage of 1.78
mV, the noise suppression level shall be 20 dB or less. |
| Frequency variations in a local oscillator |
Within 0.001% |
| Overall distortion and noise |
When a receiver input voltage of 10 µV
modulated up to 70% of the maximum frequency shift at a frequency
of 1,000 Hz is applied, the ratio of the total device output
to the unwanted elements contained within it shall be 20 dB
or more. |
(Announcement:
* in No. 63 in 1984) |
|