1990 No. 263*1* STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983
*1* Notified in the Commonwealth of Australia Gazette on 21 August 1990. 1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 1
PART 1 - PRELIMINARY
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 1
Citation
STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 FOR
RADIOTELEPHONY EQUIPMENT USED IN THE VHF INTERNATIONAL
MARITIME MOBILE SERVICE
1. This standard may be cited as ``Ministerial Standard 274".
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 2
Interpretation
2. In this standard, unless the contrary intention appears:
``battery-end-of-life voltage" means the manufacturer's declared voltage
below which the battery is incapable of operating the equipment in accordance
with the manufacturer's stated specifications;
``channel" means a 25 kHz band centred on the nominal carrier frequency;
``coast station" means a station established on land primarily for the
purpose of communicating with ship stations including the transmission and
reception of messages on behalf of the public;
``dB" means decibel;
``dBm" means decibel relative to one milliwatt;
``device" means a device to which this standard applies;
``emission" means radiation produced, or the production of radiation, by a
radiocommunications transmitter;
``F3E" means an emission whose basic characteristic is that of a frequency
modulated carrier on a single channel containing primarily analogue telephony
information;
``G3E" means an emission whose basic characteristic is that of a phase
modulated carrier on a single channel containing primarily analogue telephony
information;
``handheld station" means a station designed to be carried on the person and
deriving primary power from a replaceable or rechargeable internal battery;
``Hz" means hertz;
``kHz" means kilohertz;
``limited coast station" means a station established on land for the purpose
of communicating with ship stations and which is not used for the transmission
and reception of messages on behalf of the public;
``MHz" means megahertz;
``mW" means milliwatt;
``octave" means a doubling of frequency;
``out-of-band emission" means an emission on a frequency or frequencies
outside the permitted bandwidth which results from the modulation process but
is not a spurious emission;
``permitted bandwidth" means the 16 kHz band centred on the operating carrier
frequency;
``radiation" means the outward flow of energy from any source by means of
radio transmission;
``radiotelephony" means a form of radiocommunications set up for the
transmission of speech or, in some cases, other sounds;
``rated audio-frequency output power" means the maximum power available at the
receiver output terminals as stated by the equipment manufacturer;
``reference audio frequency output power" means an audio power level:
(a) 10 dB below rated audio-frequency output power in the case of a coast
station, limited coast station and ship station; or
(b) 3 dB below rated audio-frequency output power in the case of a handheld
station;
``reference sensitivity" means the minimum input signal level that can be
applied to a receiver to produce standard SINAD ratio at reference audio
frequency output power;
``ship station" means a station established aboard a ship and which is used
primarily for communicating with land stations and other stations established
aboard ships;
``SINAD ratio" means the ratio, at the receiver output, of the power of the
signal plus noise plus distortion to the power of the noise plus distortion;
``spurious emission" means an emission on a frequency or frequencies which are
outside the permitted bandwidth and the level of which may be reduced without
affecting the corresponding transmission of information;
``standard device" means a device which complies with this standard;
``standard SINAD ratio" means a SINAD ratio of 12 dB;
``station" means an installation or thing that is, or includes, a
radiocommunications transmitter or receiver;
``transmitter" means a radio communications transmitter;
``unwanted emission" means a spurious emission or an out-of-band emission;
``VHF International Maritime Mobile Service" means a maritime oriented
radiocommunication service operating on designated channels within the
frequency band 156.025 MHz to 162.025 MHz inclusive;
``W" means Watts; and
``degrees C" means degrees Celsius.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 3
Devices to which this standard applies
3. (1) Subject to subclauses 3 (2) and 3 (3), this standard applies to coast
stations, limited coast stations, ship stations and handheld stations designed
or intended for the purpose of, or purposes which include, radiotelephony
operation in the VHF International Maritime Mobile Service.
(2) Where a coast station, limited coast station, ship station or handheld
station is designed or intended for:
(a) the purpose of radiotelephony operation in the VHF International
Maritime Mobile Service; and
(b) another purpose or purposes;
this standard applies only to that part or those parts of the station
necessary for the purpose in paragraph 3 (2) (a).
(3) While ship stations established aboard vessels subject to the Navigation
Act 1912 may comply with this standard as it applies to ship stations, the
standard does not make such compliance mandatory.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 2
PART 2 - GENERAL
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 4
Equipment markings
4. (1) Subject to subclause 4 (3), there shall be displayed on a device:
(a) a compliance statement in the form set out in item 1 of the Schedule:
(i) indicating that the device complies with this standard; and
(ii) citing the type approval number shown on the compliance statement
certificate issued in respect of the device under section 12 of the
Radiocommunications Act 1983; and
(b) its type or model designation which shall be distinctively different
from that of imported equipment requiring modification before it complies with
this standard.
(2) A statement or marking displayed on a device in accordance with subclause
4 (1) shall be clearly visible on the exterior surface of the device,
indelible, tamper proof and affixed in such a manner as not to be removable
except by destruction or defacing.
(3) Paragraph 4 (1) (a) does not apply to a device unless the importer,
manufacturer or supplier of the device, as the case may be, has been issued
with a compliance statement certificate in respect of the device.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 5
Adjustment mechanisms
5. (1) For the purpose of this clause an ``adjustment mechanism" is a
mechanism which enables the operation of a standard device to be altered so
that the device contravenes the requirements of this standard.
(2) Any adjustment mechanism shall be contained within the housing of a device
and shall be accessible only with the use of tools such as screwdrivers and
spanners.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 6
Controls and indicators
6. (1) A device shall provide a visual indication of the presence of radio
frequency output power when transmitting.
(2) The channel switching arrangement incorporated in a device shall be such
that the time taken to switch from one channel to another shall not exceed
five seconds.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 7
Channel operation
7. (1) Subject to clause 13 and subclause 7 (2) a device shall be capable of
operation only on a channel designated in the first column of the table set
out in item 2 of the Schedule, being a channel whose transmit and receive
nominal carrier frequency is specified in:
(a) the second and third column respectively opposite that channel in the
case of a ship station or handheld station; or
(b) the fourth and fifth column respectively opposite that channel in the
case of a coast station or limited coast station.
(2) Where an alternate set of channels, in addition to those specified in
subclause 7 (1), is available the device shall:
(a) provide a clear indication of which set of channels is in use; and
(b) be designed so that the channel set on which the device operates at
switch-on corresponds to that specified in subclause 7 (1).
(3) A device shall operate on only one channel at any one time. (4) A device
shall be inhibited from transmitting during channel switching operations.
NOTE: Only channels as specified in subclause 7 (1) will be authorised or
licensed for use in Australian waters.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 8
Conditions of operation
8. The requirements of Parts 3 and 4 shall be met by a device when it
operates at:
(a) ambient temperatures of between 0 degrees C and 55 degrees C inclusive;
and
(b) subject to paragraph 8 (c), voltages within +-10% of the primary supply
voltage stated by the manufacturer; and
(c) in the case of handheld stations, voltages between the primary supply
voltage stated by the manufacturer, and the battery-end-of-life voltage.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 3
PART 3 - TRANSMITTER
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 9
Application
9. In this part ``transmitter" means a radiotelephony transmitter of a coast
station, limited coast station, ship station and handheld station.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 10
Emission modes
10. A transmitter shall be capable of operation only in:
(a) the G3E emission mode; or
(b) the F3E emission mode with a nominal 6 dB per octave pre-emphasis
characteristic in the audio pass band.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 11
Frequency error
11. The carrier frequency error of a transmitter shall not exceed +-1600 Hz.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 12
Mandatory distress channels
12. A transmitter shall be capable of operation on:
(a) channel 16 (the international distress, safety and calling channel);
and
(b) channel 67 (designated in Australia as the supplementary distress and
safety channel).
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 13
Inhibited channels
13. A transmitter shall not be capable of operation on:
(a) channels 75 and 76 (the guardband channels); and
(b) channel 70 (which is reserved exclusively for digital selective calling
for distress and safety communications).
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 14
Carrier power
14. (1) The output carrier power of a transmitter shall not exceed:
(a) 50 W for a coast station and limited coast station;
(b) 25 W for a ship station; or
(c) 5 W for a handheld station.
(2) Subject to subclause 14 (3), the output carrier power of a transmitter
shall be greater than:
(a) 10 W for a coast station and limited coast station; or
(b) 7 W for a ship station.
(3) A transmitter of a ship station or handheld station shall incorporate a
facility to permit a reduction of output carrier power to not more than 1 W.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 15
Protective design
15. A transmitter shall not be damaged by any short or open circuit of the
antenna terminals when transmitting at maximum power.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 16
Modulation limiting
16. The maximum frequency deviation of a transmitter shall not exceed +-25
kHz under any modulation conditions.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 17
Modulation sensitivity
17. With any external microphone gain control adjusted for minimum
microphone sensitivity a 1000 Hz sinusoidal signal applied to the transmitter
microphone at a sound pressure level of 1.0 Pascal shall produce a frequency
deviation of not less than 2.5 kHz.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 18
Modulation characteristic
18. (1) In the absence of frequency deviation limiting, the transmitter
modulation response shall increase at a nominal rate of 6 dB per octave over
the modulating frequency range of 300 Hz to 3000 Hz inclusive, with the
variation from a linear rate of increase being less than +1 dB and -3 dB when
referenced to the response at 1000 Hz.
(2) The transmitter modulation response at a modulating frequency of 6 kHz
shall not exceed that obtained at a modulating frequency of 1 kHz.
(3) At modulating frequencies increasing from 6 kHz to 25 kHz, the
transmitter modulation response shall fall at a rate of not less than 14 dB
per octave, or until the transmitter noise level is reached.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 19
Out-of-band emission supression
19. The power of each out-of-band emission from a transmitter shall not
exceed:
(a) 20 dBm where the frequency of the emission differs from the operating
carrier frequency by greater than 8 kHz but not greater than 12.5 kHz;
(b) 0 dBm where the frequency of the emission differs from the operating
carrier frequency by greater than 12.5 kHz but not greater than 16 kHz;
(c) -15 dBm where the frequency of the emission differs from the operating
carrier frequency by greater than 16 kHz but not greater than 25 kHz; or
(d) -26 dBm where the frequency of the emission differs from the operating
carrier frequency by greater than 25 kHz.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 20
Spurious emissions
20. The power of any spurious emission from a transmitter shall not exceed:
(a) -26 dBm for a coast station, limited coast station and ship station;
or
(b) -16 dBm for a handheld station.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 4
PART 4 - RECEIVER
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 21
Application
21. In this part ``receiver" means a radiotelephony receiver of a coast
station, limited coast station, ship station and handheld station.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 22
Receive modes
22. A receiver shall be capable of demodulation of the emission modes
specified in clause 10 of this standard.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 23
Mandatory distress channels
23. A receiver shall be fitted for reception on channels 16 and 67.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 24
Reference sensitivity
24. The reference sensitivity of a receiver shall be equal or lower in level
than -113 dBm.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 25
Adjacent channel selectivity
25. The adjacent channel selectivity of a receiver at a frequency offset 25
kHz above or below the nominal carrier frequency shall be equal or greater
than:
(a) 70 dB for a coast station, limited coast station and ship station; or
(b) 60 dB for a handheld station.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 26
Blocking immunity
26. The blocking immunity of a receiver at a frequency offset 1.6 MHz above
or below the nominal carrier frequency shall be equal or greater than:
(a) 90 dB for a coast station, limited coast station and ship station; or
(b) 80 dB for a handheld station.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 27
Intermodulation immunity
27. The intermodulation immunity of a receiver with two unwanted signals,
one offset 25 kHz and the other 50 kHz from the nominal carrier frequency
shall be equal or greater than 65 dB.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 28
Spurious response immunity
28. The spurious response immunity of a receiver at frequencies offset from
the nominal carrier frequency by greater than 25 kHz, and within the frequency
band of 100 kHz to 1000 MHz inclusive, shall be equal or greater than:
(a) 70 dB for a coast station, limited coast station and ship station; or
(b) 60 dB for a handheld station.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 29
Conducted spurious signals
29. The power of any spurious signal from a receiver shall not exceed:
(a) -57 dBm for a coast station, limited coast station and ship station;
or
(b) -47 dBm for a handheld station.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 30
Audio frequency response
30. The audio frequency response at the receiver output shall fall at a
nominal rate of 6 dB per octave over the audio frequency range of 300 Hz to
3000 Hz inclusive. The variation from a linear rate of decrease shall be less
than +1 dB and -3 dB when referenced to the response at 1000Hz.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 31
Maximum squelch level
31. The maximum squelch opening and closing level of a receiver shall not
exceed -103 dBm.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 32
Telephone handset
32. Where a receiver incorporates a telephone handset an input signal
modulated with a 1000 Hz sinusoid at a frequency deviation of 3 kHz and at a
level required to establish standard SINAD ratio shall produce a corresponding
audio power at the telephone handset of not less than 1 mW.
1990 No. 263 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - SCHEDULE
SCH
SCHEDULE
ITEM 1: THE FORM OF A COMPLIANCE STATEMENT (Clause
4)
``COMPLIES WITH MS274
TYPE APPROVAL No. . ."
ITEM 2: CHANNEL OPERATION (Clause
7)
Channel Ship station and Coast station and
number handheld station limited coast station
Column 1 Column 2 Column 3 Column 4 Column 5
Transmit Receive Transmit Receive
60 156.025 160.625 160.625 156.025
01 156.050 160.650 160.650 156.050
61 156.075 160.675 160.675 156.075
02 156.100 160.700 160.700 156.100
62 156.125 160.725 160.725 156.125
03 156.150 160.750 160.750 156.150
63 156.175 160.775 160.775 156.175
04 156.200 160.800 160.800 156.200
64 156.225 160.825 160.825 156.225
05 156.250 160.850 160.850 156.250
65 156.275 160.875 160.875 156.275
06 156.300 156.300 - -
66 156.325 160.925 160.925 156.325
07 156.350 160.950 160.950 156.350
67 156.375 156.375 156.375 156.375
08 156.400 156.400 - -
68 156.425 156.425 156.425 156.425
09 156.450 156.450 156.450 156.450
69 156.475 156.475 156.475 156.475
10 156.500 156.500 156.500 156.500
70 156.525 156.525 156.525 156.525
11 156.550 156.550 156.550 156.550
71 156.575 156.575 156.575 156.575
12 156.600 156.600 156.600 156.600
72 156.625 156.625 - -
13 156.650 156.650 156.650 156.650
73 156.675 156.675 156.675 156.675
14 156.700 156.700 156.700 156.700
74 156.725 156.725 156.725 156.725
15 156.750 156.750 156.750 156.750
75 - - - -
16 156.800 156.800 156.800 156.800
76 156.825 156.825 156.825 156.825
17 156.850 156.850 156.850 156.850
77 156.875 156.875 - -
18 156.900 161.500 161.500 156.900
78 156.925 161.525 161.525 156.925
19 156.950 161.550 161.550 156.950
79 156.975 161.575 161.575 156.975
20 157.000 161.600 161.600 157.000
80 157.025 161.625 161.625 157.025
21 157.050 161.650 161.650 157.050
81 157.075 161.675 161.675 157.075
22 157.100 161.700 161.700 157.100
82 157.125 161.725 161.725 157.125
23 157.150 161.750 161.750 157.150
83 157.175 161.775 161.775 157.175
24 157.200 161.800 161.800 157.200
84 157.225 161.825 161.825 157.225
25 157.250 161.850 161.850 157.250
85 157.275 161.875 161.875 157.275
26 157.300 161.900 161.900 157.300
86 157.325 161.925 161.925 157.325
27 157.350 161.950 161.950 157.350
87 157.375 161.975 161.975 157.375
87A 157.375 157.375 157.375 157.375
28 157.400 162.000 162.000 157.400
88 157.425 162.025 162.025 157.425
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