Chapter II Transmitting Equipment
Section 1 General
|
| Article 10and 11. |
Deleted (Deleted in No. 16 in 1961.) |
| |
| (Conversion Ratio of Antenna Power) |
| Article 12. |
The conversion ratios for the carrier power, mean power, and peak
envelope power of a transmitter shall vary according to their emission
class and be as stipulated in Table 3.
|
| (Method for Calculating Antenna Power, etc.) |
| Article 13. |
The methods for measuring and calculating the antenna power of radio
equipment will be announced (*).
(Announcement: * in No. 683 in 1959)
|
| (Tolerances for Antenna Power) |
| Article 14. |
The tolerance for the antenna power of transmitting equipment in
each classification listed in the left-hand column of the following
table shall be as stipulated in the right-hand column. |
| Transmitting equipment |
Tolerance |
| Upper limit (%) |
Lower limit (%) |
| 1) |
Transmitting equipment of a broadcasting station (excluding
that listed in 2)) |
|
5 |
10 |
| 2) |
Transmitting equipment of a broadcasting station for
HF broadcasting (except that which uses class A3E emissions),
VHF broadcasting, television broadcasting, VHF multiplex
broadcasting, or television multiplex broadcasting |
|
10 |
20 |
| 3) |
Transmitting equipment at a coast station (excluding
the coast station specified in item 3.2) below), an aeronautical
station, or a radio beacon station for ships which uses
emissions of a frequency of 26.175 MHz or lower |
|
|
|
| 3.2) |
Transmitting equipment at a ship station or a coast
station which performs communication by means of TDMA |
|
20 |
20 |
| 4) |
Transmitting equipment defined below
| (1) |
Transmitting equipment for a survival boat or
rescue craft |
| (2) |
Two-way radio telephone |
| (3) |
Ship/aircraft two-way radio telephone |
|
|
50 |
20 |
| 5) |
Transmitting equipment for a paging station (limited
to that established with the aim of performing a telecommunication
service) |
|
15 |
15 |
| 6) |
Transmitting equipment at a radio station using emissions
of a frequency higher than 470 MHz (except the transmitting
equipment prescribed in Article 7 paragraph 8, each item
of Article 7 paragraph 9, 10, and 11, and Article 7 paragraph
15 and the transmitting equipment defined in 2), 4), 7),
8), 9), and 11) in this table) |
|
50 |
50 |
| 7) |
Transmitting equipment defined below
| (1) |
Transmitting equipment at a premises radio station
using the 19 GHz band frequencies |
| (2) |
Transmitting equipment at a specified low-power
radio station which uses emissions of a frequency
from 2,400 MHz to 2,483.5 MHz and which uses a frequency
hopping system |
| (3) |
Transmitting equipment at a radio station of a
low-power data communication system |
| (4) |
Transmitting equipment at a radio station of an
access system in the 5 GHz band |
|
|
20 |
80 |
| 8) |
Transmitting equipment at an amateur radio station |
|
20 |
|
| 9) |
Transmitting 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 of higher than 76 GHz to 77 GHz |
|
50 |
70 |
| 10) |
Transmitting equipment at a radio station that performs
CDMA and time division multiplexing/code division multiplexing
portable radio communication |
|
Transmitting equipment at a base station using
emissions of a frequency in a range of higher than 832 MHz to
834 MHz, higher than 838 MHz to 846 MHz or higher than 860 MHz
to 885 MHz |
58 |
60 |
| Transmitting equipment at a base station using
emissions of a frequency in a range of higher than 2,110 MHz
to 2,170 MHz, whose spread code speed (refers to the speed of
a signal that is spectrum-spread by a spread code: this also
applies hereafter) is 3.84 megachips/s |
87 |
47 |
| Transmitting equipment at a base station using
emissions of a frequency in a range of higher than 2,110 MHz
to 2,170 MHz, whose spread code speed is 1.2288 megachips/s
per carrier |
59 |
61 |
| Transmitting equipment at a land mobile station
using emissions of a frequency in a range of higher than 1,920
MHz to 1,980 MHz, whose spread code speed is 3.84 megachips/s,
and whose antenna power is higher than 21 dB (with 1 mW regarded
as 0 dB) |
48 |
58 |
| Transmitting equipment at a land mobile station
using emissions of a frequency in a range of higher than 1,920
MHz to 1,980 MHz, whose spread code speed is 3.84 megachips/s,
and whose antenna power is 21 dB (with 1 mW regarded as 0 dB)
or lower |
87 |
47 |
| 11) |
Transmitting equipment defined below
| (1) |
Transmitting equipment at a radio station that
performs road traffic information communication |
| (2) |
Transmitting equipment at the base station of
a DSRC system |
| (3) |
Transmitting equipment at a radio station that
performs communication for testing the radio equipment
at the land mobile station of a DSRC system |
|
|
20 |
50 |
| 12) |
Other transmitting equipment |
|
|
| 2 |
|
Notwithstanding the provisions of the previous paragraph,
the transmitting equipment of a broadcasting station for
television broadcasting or television multiplex broadcasting
using emissions of a frequency in a range of higher than
470 MHz to 770 MHz that is announced separately (*1) by
the Minister of Public Management, Home Affairs, Posts and
Telecommunications because it is deemed difficult or irrational
to apply the said paragraph shall satisfy the technical
conditions announced separately (*2). |
| 3 |
|
Notwithstanding the provisions of paragraph 1, the Minister
of Public Management, Home Affairs, Posts and Telecommunications
will separately announce (*3, *4, *5, *6, *7) the tolerance
for the antenna power of the transmitting equipment of radio
equipment at an INMARSAT ship earth station, INMARSAT portable
mobile earth station, radio equipment at a radio station
that is established on a structure operated in a sea area
and performs radio communication by means of a relay through
an INMARSAT satellite station, radio equipment at an aircraft
earth station, radio equipment at a radionavigation land
station for providing satellite locating error correction
information, satellite emergency position-indicating radio
beacon, search and rescue radar transponder, and ELT. |
|
| (Permissible Values of Specific Absorptance at Human
Head) |
| Article 14.2. |
Radio equipment at a portable mobile earth station that performs
portable mobile satellite communication by means of a relay through
an artificial satellite station established at a land mobile station
and non-stationary satellite station that performs portable radio
communication (limited to the radio equipment for which transmission
information is provided by telephone (including that of audio broadcasting;
this also applies hereafter in this paragraph) and the radio equipment
in a combination of telephone and other information) shall provide
specific absorptance (the value of the energy that any arbitrary living
tissue of 10 g absorbs for any 6 minutes by being exposed to an electromagnetic
field is divided by 10 g, and then is further divided by six minutes)
of the emissions radiated at the human head by the radio equipment
being 2 W or less/kg, except for the radio equipment defined in the
items below:
| 1) |
Radio equipment whose mean power is 20 mW or less |
| 2) |
Radio equipment announced separately by the Minister of Public
Management, Home Affairs, Posts and Telecommunications when
it is considered irrational to apply this regulation, in addition
to the condition in the preceding item |
|
| 2 |
|
The Minister of Public Management, Home Affairs, Posts
and Telecommunications will separately announce the method
of measuring specific absorptance at the human head described
in the preceding paragraph.
(Announcements: *1 in No. 819 in 1975, *2
in No. 859 in 1982, *3 in No. 566 in 1990, *4 in No. 572
in 1990, *5 in No. 172 in 1996, *6 in No. 121 in 1997, *7
in No. 267 in 1997)
|
|
Section
2 Transmitter
|
| (Condition for Frequency Stabilization) |
| Article 15. |
A transmitter shall be so constructed that the oscillation frequency
will be as free from influence by changes in its power supply voltage
or load as possible in order to maintain its frequency within the
tolerance. |
| 2 |
|
The oscillation circuit of a transmitter shall be based
on an oscillation method that is as resistant to influence
by changes in the ambient temperature or humidity as possible
in order to maintain its oscillation frequency within the
tolerance. |
| 3 |
|
The transmitter of a mobile station (including a mobile
amateur radio station) shall be able to maintain its frequency
within the tolerance against any vibration or shock that
can practically occur. |
|
| Article 16. |
The crystal oscillator of a crystal oscillation circuit shall satisfy
the conditions stated below in order to maintain its frequency within
the tolerance.
| 1) |
The oscillation frequency shall be determined in advance in
tests using the crystal oscillation circuit of the transmitter
or a circuit that is equivalent to the said crystal oscillation
circuit. |
| 2) |
If a temperature-controlled bath is provided, the temperature-controlled
bath shall be able to maintain accurately the permissible value
for changes in its temperature according to the temperature
coefficient of the crystal oscillator.
|
|
| (Transmission Rate) |
| Article 17. |
A transmitter based on manual keying shall be able to operate stably
when the transmission rate of the keying is 25 band. |
| 2 |
|
A transmitter other than that stated in the previous paragraph
shall be able to operate stably at a transmission rate 10%
higher than its maximum service transmission rate. |
| 3 |
|
Notwithstanding the provisions of the previous two paragraphs,
the transmitter at an amateur radio station shall be able
to operate as stably as possible at its normally used transmission
rate.
|
|
| (Modulation) |
| Article 18. |
When a transmitter modulates a carrier with the frequency of a sound
signal or a similar signal, the modulation factor shall be kept within
±100% in terms of the peak value of the modulated wave. |
| 2 |
|
The transmitter at an amateur radio station shall not
be provided with a function for ensuring communication secrecy.
|
|
| (Conditions for Communication Method) |
| Article 19. |
The simplex operation-based radio telegraph for a ship or coast
station shall be of the break-in type or another type that is equivalent
or superior thereto. If the said radio telegraph uses a break-in relay,
its configuration shall allow easy replacement of the break-in relay
with a spare. However, this does not apply to the break-in relay of
radio equipment that uses emissions of a frequency higher than 26.175
MHz. |
| 2 |
|
The simplex operation-based radio telephone (except a
radio telephone at an amateur radio station) shall have
the transmission/reception switch of the single-action switching
type or another type that is equivalent or superior thereto.
In addition, for the radio telephone at a ship station (limited
to the manual-switched type), the operator's section of
the switch shall be mounted on the microphone or handset
of the radio telephone. |
| 3 |
|
The duplex operation-based radio equipment of a radio
telephone station intended to perform a telecommunications
service shall be of the vodas type or another type that
is equivalent or superior thereto except for simpler radio
equipment intended to be used for short-distance communication. |
| 4 |
|
A voice-operated transmission/reception switch for radio
telephone at a radio station in the maritime mobile service
with the aim of performing a telecommunication service shall
satisfy the technical conditions announced separately (*).
(Announcement: * in No. 411 in 1969)
|
|
Section
3 Transmitting Antenna
|
| (Type, Configuration, etc. of Transmitting Antenna) |
| Article 20. |
The type and configuration of a transmitting antenna shall satisfy
the following items:
| 1) |
The gain and efficiency of the antenna shall be as high as
possible. |
| 2) |
Matching shall be sufficient. |
| 3) |
The antenna shall have a satisfactory directional pattern.
|
|
| Article 21. |
Anyone who plans to open a radio station with the aim of performing
the service defined in each of the following items may be requested
to submit material related to the gain, directional pattern, etc.
of the antenna of the said radio station.
| 1) |
Broadcasting service for a specific broadcasting area |
| 2) |
International communication service |
| 3) |
Radio beacon service and radionavigation service |
| 4) |
Other radiocommunication service for specific partners
|
|
| Article 22. |
The directional pattern of an antenna shall be defined in terms
of the items stated below:
| 1) |
Direction of the principal and secondary radiations |
| 2) |
Angle of the principal radiation in a horizontal plane |
| 3) |
Object in the proximity of the location of the antenna that
can divert the emissions from the antenna |
| 4) |
Radiation from the feeder
|
|
| Article 23. |
Deleted (Deleted in No. 61 in 1953.) |
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