1990 No. 71*1* STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983
*1* Notified in the Commonwealth of Australia Gazette on 27 February 1990. 1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 1
STANDARD FOR 406 MHz SATELLITE DISTRESS BEACONS
PART 1-PRELIMINARY
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 1
Citation
1. This standard may be cited as "Ministerial Standard 309".
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 2
Interpretation
2. In this standard, unless the contrary intention appears-
'dBuV/m' means decibel relative to one microvolt per metre;
'device' means a device to which this standard applies;
'Hz' means hertz;
'kHz' means kilohertz;
'MHz' means megahertz;
'MS' means Ministerial Standard;
'radiation' means the outward flow of energy from any source by means of
radio transmission;
'satellite distress beacon' means a satellite emergency position indicating
radio beacon, satellite emergency locator transmitter or satellite personal
locator beacon;
'satellite emergency position indicating radio beacon' means a device,
designed or intended for use in the Maritime Mobile-Satellite Service, which
incorporates a transmitter the emissions of which are intended to facilitate
search and rescue operations;
'satellite emergency locator transmitter' means a device, designed or
intended for use in the Aeronautical Mobile-Satellite Service, which
incorporates a transmitter the emissions of which are intended to facilitate
search and rescue operations;
'satellite personal locator beacon' means a device, designed or intended for
use in the Land Mobile-Satellite Service, which incorporates a transmitter the
emissions of which are intended to facilitate search and rescue operations;
'Specification' means the document known as "Specification for COSPAS-SARSAT
406 MHz Distress Beacons C/S T.001 Issue 2-Revision 0" dated November 1988;
'standard device' means a device which complies with this standard;
'transmitter' means a radiocommunications transmitter as defined in the
Radiocommunications Act 1983; and
'C' means degrees Celsius.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 3
Devices to which this standard applies
3. This standard applies to all satellite distress beacons designed or
intended for use on the carrier frequency 406.025 MHz, except for satellite
emergency locator transmitters.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 2
PART 2-GENERAL
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 4
Equipment markings
4. (1) Subject to sub-clause 4(3), there shall be displayed on a device-
(a) a compliance statement in the form set out in 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
Radiocommunciations Act 1983;
(b) the name of its manufacturer;
(c) the name of the country of its manufacture;
(d) its type or model designation which shall be distinctively different
from that of imported equipment requiring modification before it complies with
this standard;
(e) its equipment serial number in decimal format; and
(f) simple operating instructions including the warning: ''Not to be
operated except in an emergency-improper use carries a severe penalty''.
(2) A statement or marking displayed on a device in accordance with
sub-clause 4 (1) shall be clearly visible on the exterior surface of the
device, indelible, durable, tamper proof and affixed in such a manner as not
to be removable except by destruction or defacing.
(3) The requirement of 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. 71 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 no longer complies with 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. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 3
PART 3-TRANSMITTER OPERATION ON 406.025 MHz
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 6
Adoption of matter contained in the Specification
6. This standard adopts all of the requirements contained in the document
"Specification for COSPAS-SARSAT 406 MHz Distress Beacons C/S T.001 Issue
2-Revision 0" dated November 1988 ("the Specification") which is set out in
Schedule 2, insofar as it relates to satellite personal locator beacons and to
satellite emergency position indicating radio beacons.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 7
Application and Amendments
7. (1) A device which is a satellite personal locator beacon shall comply
with the provisions of the Specification.
(2) Subject to sub-clauses 7 (3) and 7 (4), a device which is a satellite
emergency position indicating radio beacon shall comply with the provisions of
the Specification.
(3) In the case of a device which is a satellite emergency position
indicating radio beacon the matter adopted by this standard is amended by
substituting "48 hours" for "24 hours" wherever it occurs in compliance with
International Maritime Organisation requirements.
(4) In addition to the requirements of sub-clauses 7 (2) and 7 (3) a device
which is a satellite emergency position indicating radio beacon shall
incorporate, as an integral part of the device, a homing transmitter operating
on the nominal carrier frequency 121.5 MHz and complying with the requirements
of Part 4 of this standard.
NOTES 1 As indicated by clause 3, this standard does not apply to satellite
emergency locator transmitters and therefore the requirements set out in the
Specification have not been adopted in respect of those devices.
NOTES 2 For the purpose of this Ministerial Standard no additional
environmental or operational requirements as referred to in sections 4.3 and
4.4 and 4.5.2 of the Specification are required.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 4
PART 4-HOMING TRANSMITTER
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 8
Interpretation
8. In this part 'homing transmitter' means an auxiliary homing transmitter
of a device which is a satellite emergency position indicating radio beacon.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 9
Conditions of Operation
9. The requirements of this part shall be met by a homing transmitter when
it operates:
(1) at an ambient temperature of between -20 degrees C and 55 degrees C
inclusive; and
(2) continuously for a minimum period of 48 hours.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 10
Nominal carrier frequency
10. Subject to clause 11, a homing transmitter shall only be capable of
operating on the carrier frequency 121.5 MHz.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 11
Frequency error
11. The carrier frequency error of a homing transmitter shall not exceed +-3
kHz.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 12
Radiated signal field strength
12. The peak field strength of the radiated signal from a homing transmitter
shall not be less than 99 dBuV/m when measured in the vertical plane at a
distance of 10 metres from the antenna at a height of 1.75 metres above the
level of water in which the device is floating.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 13
Type of emission
13. The emission from a homing transmitter shall comprise a double sideband,
full carrier signal, amplitude modulated to a depth of not less than 85%.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 14
Modulation characteristic
14. (1) Modulation of a homing transmitter shall consist of an audio
frequency signal swept upwards through at least 700 Hz within the range 300 Hz
to 1600 Hz with a repetition rate of between 2 Hz and 4 Hz; and
(2) The delay between consecutive sweeps shall not exceed one-tenth of the
up-sweep time.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 15
Emission spectrum
15. An emission from a homing transmitter shall include a clearly defined
carrier frequency component distinct from the modulation sideband components.
At least 30% of the power emitted shall be contained during any modulation
cycle within +-30 Hz of the actual carrier frequency.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 16
Transmitter duty cycle
16. (1) Following activation a homing transmitter may operate either
continuously (100% duty cycle) or intermittently. In the case of intermittent
operation the following conditions shall apply:
(a) repetition period of 30 seconds +-10%; and
(b) duty cycle within the range 40% to 60% inclusive.
(2) A transmission from a homing transmitter may be interrupted during the
406.025 MHz message transmissions.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 17
Spurious radiation
17. The peak field strength of each spurious radiation from a homing
transmitter shall not exceed 75 dBuV/m when measured at a distance of 10
metres from the antenna.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 18
Antenna characteristics
18. The radiation characteristics of a homing transmitter shall be such that
when the device is floating in water the radiation is:
(1) vertically polarised;
(2) omnidirectional in the horizontal plane; and
(3) predominant at low angles of elevation.
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - SCHEDULE 1
SCH
SCHEDULE 1
Clause 4
THE FORM OF A COMPLIANCE STATEMENT
"COMPLIES WITH MS309
TYPE APPROVAL NO. . . . ."
1990 No. 71 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - SCHEDULE 2
SCH
SCHEDULE 2
Clause 6
THE "SPECIFICATION FOR COSPAS-SARSAT
406 MHz DISTRESS BEACONS C/S T.001
ISSUE 2-REVISION 0" REPRODUCED WITH THE PERMISSION OF COSPAS-SARSAT.
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