ETSI ETS 300 066 ed.1 (1992-11)

Radio Equipment and Systems (RES); Float-free maritime satellite Emergency Position Indicating Radio Beacons (EPIRBs) operating on 406,025 MHz; Technical characteristics and methods of measurement

DE/RES-01003

Radijska oprema in sistemi (RES) – Prosto plavajoči pomorski satelitski radijski javljalniki kraja nuje, ki delujejo na 406,025 MHz – Tehnične karakteristike in merilne metode

General Information

• Status: Published
• Publication Date: 30-Nov-1992
• Technical Committee: RES 1 - Maritime Mobile
• Current Stage: 12 - Completion
• Due Date: 03-Jul-1992
• Completion Date: 01-Dec-1992
• Ref Project: SIST ETS 300 066 E1:2003 - Radio Equipment and Systems (RES); Float-free maritime satellite Emergency Position Indicating Radio Beacons (EPIRBs) operating on 406,025 MHz; Technical characteristics and methods of measurement

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 066 E1:2003
01-december-2003
5DGLMVNDRSUHPDLQVLVWHPL5(6±3URVWRSODYDMRþLSRPRUVNLVDWHOLWVNLUDGLMVNL
MDYOMDOQLNLNUDMDQXMHNLGHOXMHMRQD0+]±7HKQLþQHNDUDNWHULVWLNHLQ
PHULOQHPHWRGH
Radio Equipment and Systems (RES); Float-free maritime satellite Emergency Position
Indicating Radio Beacons (EPIRBs) operating on 406,025 MHz; Technical characteristics
and methods of measurement
Ta slovenski standard je istoveten z: ETS 300 066 Edition 1
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
SIST ETS 300 066 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 066 E1:2003

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SIST ETS 300 066 E1:2003
EUROPEAN ETS 300 066
TELECOMMUNICATION November 1992
STANDARD
Source: ETSI TC-RES Reference: DE/RES-1003
ICS: 33.060.50
Martime, EPIRB
Key words:
Radio Equipment and Systems (RES);
Float-free maritime satellite
Emergency Position Indicating Radio Beacons (EPIRBs)
operating on 406,025 MHz;
Technical characteristics and methods of measurement
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1992. All rights reserved.
New presentation - see History box

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Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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Contents
Foreword.7
1 Scope .9
2 Normative references .9
3 Definitions and abbreviations.9
3.1 Definitions.9
3.2 Abbreviations.9
4 General requirements . 10
4.1 Construction . 10
4.2 Controls and indicators. 11
4.2.1 Activation. 11
4.2.2 Test mode. 11
4.3 Labelling. 11
4.4 Operating instructions. 12
4.5 Power source . 12
4.6 Antenna characteristics. 12
5 Test conditions, power sources and ambient temperatures. 12
5.1 Test protocol . 12
5.2 Test fixture . 13
5.3 Normal and extreme test conditions. 13
5.4 Additional facilities. 13
5.5 Test power source. 13
5.5.1 Normal test conditions . 13
5.5.2 Normal test voltage . 14
5.6 Extreme test conditions . 14
5.6.1 Extreme temperatures . 14
5.6.2 Extreme test voltages. 14
5.6.2.1 Upper extreme test voltages. 14
5.6.2.2 Lower extreme test voltage . 14
5.7 Procedure for tests at extreme temperatures. 14
5.8 Test sequence. 14
6 Environmental tests . 14
6.1 Tests . 15
7 Radiation measurements and reference output power . 16
7.1 Radiated power . 16
7.1.1 Definition . 17
7.1.2 Method of measurement . 17
7.1.3 Limits . 17
7.2 Power in test fixture . 17
7.3 Spurious emission . 17
7.3.1 Definition . 17
7.3.2 Method of measurement . 18
7.3.3 Limit. 18
8 Determination of extreme test voltages . 18
8.1 Method of measurement. 18
8.2 Upper extreme test voltage. 18
8.3 Lower extreme test voltage. 19

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ETS 300 066: November 1992
8.4 Power in test fixture at extreme test conditions.19
8.4.1 Limit.19
9 Transmitter .19
9.1 Frequency .19
9.1.1 Frequency of the emission.19
9.1.1.1 Definition.19
9.1.1.2 Method of measurement.19
9.1.1.3 Limit .20
9.1.2 Short term frequency stability.20
9.1.2.1 Definition.20
9.1.2.2 Method of measurement.20
9.1.2.3 Limit .21
9.1.3 Medium term frequency stability .21
9.1.3.1 Definition.21
9.1.3.2 Method of measurement.21
9.1.3.3 Limits.22
9.2 Radiation in the frequency band 406 - 406,1 MHz .22
9.2.1 Method of measurement .22
9.2.2 Limit.23
9.3 Modulation and data encoding.23
9.3.1 Method of measurement .23
9.3.2 Limits .24
9.4 Rise and fall times.24
9.4.1 Method of measurement .24
9.4.2 Limit.24
9.5 Modulation symmetry. 25
9.5.1 Method of measurement .25
9.5.2 Limit.25
10 Signal format.25
10.1 Repetition period. 25
10.1.1 Definition. 25
10.1.2 Method of measurement .25
10.1.3 Limit.26
10.2 Total transmission time .26
10.2.1 Definition.26
10.2.2 Method of measurement .26
10.2.3 Limits .26
10.3 CW preamble. 26
10.3.1 Definition. 26
10.3.2 Method of measurement .27
10.3.3 Limit.27
10.4 Digital message . 27
10.4.1 Bit rate .27
10.4.1.1 Definition.27
10.4.1.2 Method of measurement.27
10.4.1.3 Limit .27
10.4.2 Bit synchronisation.27
10.4.3 Frame synchronisation.27
10.4.4 Test mode . 27
10.4.5 Format flag . 28
10.4.6 Message content. 28
11 Message content.28
12 Satellite EPIRB coding.28
12.1 General .29
12.2 Protected field .32
12.2.1 Protocol flag . 32

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12.2.2 MID number. 32
12.2.3 Maritime protocol . 32
12.3 Emergency code. 33
12.4 Long message (optional) . 34
13 Release mechanism . 35
13.1 General. 35
13.2 Labelling. 35
13.3 Practical tests. 35
History. 36

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Foreword
This European Telecommunication Standard (ETS) has been produced by the Radio Equipment and
Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI) and
has undergone the ETSI standards approval procedure in Public Enquiry 13 and Vote 20.
This ETS sets out the minimum requirements for float-free maritime satellite Emergency Position-Indicating
Radio Beacons (EPIRBs), used for maritime search-and-rescue. The requirements include the
arrangements for the operation of EPIRBs on the 406,025 MHz frequency (and for the operation of
optional homing devices on other frequencies), and for the operation of the release mechanism which
allows EPIRBs to float freely in the water.
EPIRBs operate under the COSPAS-SARSAT satellite system, and this ETS incorporates the
requirements of COSPAS-SARSAT specification C/S T001 [5]. This ETS incorporates the
recommendations of the International Maritime Organisation (IMO) Assembly Resolutions A695(17) [1] and
A662(16) [2], SOLAS Amendments and the relevant requirements of the International Radio Regulations
[3], and of CCIR Recommendation 633 [4]. Signals from individual EPIRBs are coded in accordance with
IMO requirements.
Descriptions of the environmental testing arrangements are laid down in Annex VI to CEPT
Recommendation T/R 34-01 [6].
Every ETS prepared by ETSI is a voluntary standard. This ETS contains text concerning conformance
testing of the equipment to which it relates. This text should be considered only as guidance and does not
make this ETS mandatory.
The subject matter of this ETS is covered by a recent repartition agreement between ETSI and CENELEC.
Adopted and proposed ETSs in the field of maritime radio may be subject to revision to harmonise
requirements as fully as possible with those of the International Electrotechnical Committee (IEC).

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1 Scope
This ETS states the minimum requirements for maritime float-free satellite Emergency Position-Indicating
Radio Beacons (EPIRBs) operating on 406,025 MHz, with release mechanism, operating in the COSPAS-
SARSAT system. This ETS incorporates the recommendations of IMO assembly resolutions A 695(17) [1]
and A 662(16) [2], the relevant requirements of the International Telecommunications Union (ITU) Radio
Regulations [3], CCIR Recommendation 633 [4], and the COSPAS-SARSAT specification C/S T001 [5].
Descriptions of the environmental testing arrangements are laid down in Annex VI to CEPT
Recommendation T/R 34-01 [6].
2 Normative references
This ETS incorporates by dated or undated reference, provisions from other publications. These normative
references are cited at the appropriate place in the text and the publications are listed hereafter. For dated
references, subsequent amendments to, or revisions of, any of these publications apply to this ETS only
when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies.
[1] A 695(17): "Performance standards for float free satellite emergency
position indicating radio beacons operating on 406 MHz".
[2] A 662(16): "Performance standards for float free release and activation
arrangements for emergency radio equipment".
[3] International Telecommunication Union: "Radio Regulations".
[4] CCIR Recommendation 663: "Transmission characteristics of a satellite
emergency position-indicating radio beacon (satellite EPIRB) system
operating through a low polar-orbiting satellite system in the 406 MHz
band".
[5] C/S T001: "Specification for COSPAS-SARSAT 406 MHz distress
beacons".
[6] CEPT Recommendation T/R 34-01: "Specifications for maritime mobile
radio equipment".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions shall apply:
Satellite EPIRBs: earth stations in the Mobile Satellite Service the emissions of which are intended to
facilitate search and rescue operations. Class 1 Satellite EPIRBs operate over the temperature range of
- 40 °C to + 55 °C. Class 2 satellite EPIRBs operate over the temperature range of - 20 °C to + 55 °C.
Release Mechanisms: a mounting which automatically allows the EPIRB to float free.
Equipment: an EPIRB and its release mechanism.
3.2 Abbreviations
e.i.r.p. equivalent isotropically radiated power
EPIRB Emergency Position Indicating Radio Beacon

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ID Identification
IMO International Maritime Organisation
MID Maritime Identification Digits
VSWR Voltage Standing Wave Ratio
4 General requirements
4.1 Construction
The satellite EPIRB shall be mounted in a release mechanism (see Clause 13) which automatically
releases the EPIRB when submerged in water. When so released, the EPIRB shall float to the surface and
start transmitting automatically.
The satellite EPIRB shall be designed to operate when floating in the sea, but shall also operate
satisfactorily on board a ship and in a survival craft.
The equipment may include a homing function, operating on the frequency 121,5 MHz, or a 9 GHz radar
transponder. Such a facility shall be approved to the appropriate standard. Where such a facility exists, all
measurements shall be performed during combined operation.
In all respects the mechanical and electrical construction and finish of the equipment shall conform with
good engineering practice.
The equipment shall be designed to minimise the risk of internal and external damage during use or
stowage.
The exterior of the satellite EPIRB shall have no sharp edges or projections which could easily damage
inflatable rafts or injure personnel.
The general construction and method of operation shall provide a high degree of proof against inadvertent
operation, whilst still providing a simple means of operation in an emergency.
The satellite EPIRB shall be capable of being carried by one person and be designed as one integral unit.
It shall derive its energy from a battery forming a part of the equipment and incorporate a permanently
attached antenna.
It shall be possible to release and operate the satellite EPIRB manually.
The satellite EPIRB shall be watertight, be capable of floating upright in calm water and have positive
stability and sufficient buoyancy in all sea conditions.
The satellite EPIRB shall be provided with either an audible or a visual indication that alerting signals are
being emitted. The visual indication shall be clearly discernible at a distance of 1 metre (m) under light
conditions ranging from darkness to direct sunlight. The audible indication shall produce a sound level of at
least 80 dBA at a distance of 1 m.
The satellite EPIRB shall be provided with a firmly attached line in order that the equipment may be
tethered in use. The line shall have a length of at least 20 m and be capable of floating in sea water and
should be arranged so as to prevent it being trapped in the ship's structure when floating free.
The satellite EPIRB shall be finished with a highly visible yellow or orange colour and shall be fitted with a
band of retroflective material, at least 25 mm wide, encircling that part of the satellite EPIRB's surface
which is normally protruding above the waterline.

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The equipment, including labelling, shall not be unduly affected by sea water or oil and shall be resistant to
deterioration by prolonged exposure to sunlight.
The satellite EPIRB shall be provided with a low duty cycle light of at least 0,75 effective candela operating
continually or activated by darkness and flashing at a rate not less than 20 times per minute, with a flash
-6 -2
duration of between 10 to 10 seconds. It shall be mounted so that it is visible over as great a portion
of the upper hemisphere as is practical.
The fixed portion of the distress message shall be stored in such a way that it will not be affected by
removal of all power sources.
Any external connection shall not inhibit the release of the satellite EPIRB from the release mechanism.
The satellite EPIRB shall be able to meet all requirements, except for those in subclause 7.1 (Radiated
power), at any VSWR between 1:1 and 3:1. The design of the equipment shall be such that it is not
damaged by any mismatch.
The satellite EPIRB shall be designed to limit any inadvertent continuous transmission to a maximum of 45
seconds.
The transmitted frequency shall remain within the frequency band from 406,020 MHz - 406,030 MHz over a
period of at least 5 years.
4.2 Controls and indicators
All controls shall be of sufficient size for simple and satisfactory operation and also be capable of being
operated by personnel wearing gloves.
4.2.1 Activation
Manual activation of the satellite EPIRB shall require two simple but independent mechanical actions
neither of which, on its own shall, activate the equipment.
Manual activation of the satellite EPIRB shall break a seal which shall not be replaceable by the user. This
seal shall not be broken when using the test facility.
After activation it shall be possible to manually deactivate the equipment.
Means shall be provided to prevent accidental deactivation.
4.2.2 Test mode
The satellite EPIRB shall include a manually activated test whereby the alerting transmitter output may be
verified.
The Radio Frequency (RF) test transmission shall be limited to one burst of 440 ms maximum. The signal
shall be modulated as described in subclause 10.4.4. Activation of the test facility shall reset automatically.
4.3 Labelling
The satellite EPIRB shall be provided with a label or labels affixed to the exterior of the EPIRB containing
the following information:
- type designation, serial number, and the type of battery specified by the manufacturer for use in the
equipment;
- adequate instructions to enable manual activation and deactivation;

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- a warning to the effect that the satellite EPIRB shall not be operated except in an emergency;
- the date on which the battery will need to be replaced. Simple means shall be provided for changing
this date when the battery is replaced;
- space on which the name and call-sign of the ship can be recorded;
- the temperature class of the satellite EPIRB, (see iv) in subclause 6.1);
- the safe distance of the equipment from the magnetic compass;
- any other identification that may be required by national administrations, (e.g. type approval
identification).
4.4 Operating instructions
The equipment manufacturer shall provide all instructions and information regarding stowage, installation,
and operation of the satellite EPIRB. This will include proper operation, procedures to limit self-testing to
the minimum necessary to ensure confidence in the operation of the satellite EPIRB, battery replacement,
and the avoidance of false alarms.
4.5 Power source
The battery provided as a source of power shall have sufficient capacity to operate the complete
equipment for an uninterrupted period of at least 48 hours.
The battery shall have a shelf life of at least 3 years and when fitted to the satellite EPIRB shall not require
replacement within 2 years.
The battery shall be clearly and durably marked with the expiry date of the battery shelf life.
It shall not be possible to connect the battery with the polarity reversed.
4.6 Antenna characteristics
The following antenna characteristics are defined for elevation angles greater than 5° and less than 60°.
Pattern: hemispherical.
Polarisation: Right Hand Circular Polarised (RHCP) or linear.
Gain (vertical plan): between - 3 dBi and 4 dBi over 90 % of the above region.
Gain variation (azimuth plan): less than 3 dB.
Antenna VSWR: not greater than 1,5:1.
5 Test conditions, power sources and ambient temperatures
5.1 Test protocol
For the purpose of conformity testing, the satellite EPIRB shall be provided with a means to allow the test
mode (see subclauses 4.2.2 and 10.4.4) to temporarily produce more than the permitted single burst, and
all homing devices should be prepared for test transmission as required by the appropriate national
authority.

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5.2 Test fixture
The manufacturer shall supply an external test fixture permitting relative measurements to be made on the
submitted sample. This test fixture shall provide a 50 Ω RF. terminal at the working frequencies of the
equipment.
The performance characteristics of the test fixture, under normal and extreme conditions, shall be
subjected to the approval of the testing authority. The following characteristics shall apply:
- the coupling loss shall be as low as possible and in no case greater than 30 dB;
- the variation of coupling loss with frequency shall not cause errors in the measurements exceeding
2 dB;
- the coupling device shall not incorporate any non-linear elements;
- the power consumption of the satellite EPIRB shall not substantially change when fitted in the test
fixture.
Any connections provided on the equipment in order to facilitate relative measurements shall not affect the
performance of the equipment either in the test fixture or when making measurements involving the use of
radiated fields.
The test fixture supplier shall provide guidance as to the minimum distance the test fixture may be operated
from other metallic objects without a significant effect being caused to the results obtained (e.g. the
minimum size of environmental chamber needed).
5.3 Normal and extreme test conditions
Tests shall be carried out under normal
...