AS/NZS 4869.1:2005

1 - AS/NZS 4869.1:2005 Maritime Survivor Locating Systems (MSLS) - Operating on 121.5 MHz
4 - PREFACE
5 - CONTENTS
7 - SECTION 1 SCOPE AND GENERAL
7 - 1. 1 SCOPE
7 - 1. 2 APPLICATION
8 - 1. 3 REFERENCED AND RELATED DOCUMENTS
8 - 1. 4 DEFINITIONS
11 - SECTION 2 ENVIRONMENTAL AND OPERATIONAL REQUIREMENTS
11 - 2. 1 GENERAL
12 - 2.2 OPERATIONAL REQUIREMENTS
13 - 2. 3 BATTERY REQUIREMENTS
14 - 2. 4 CLIMATIC AND DURABILITY REQUIREMENT
14 - 2.5 DOCUMENTATION
15 - SECTION 3 MSLS RADIO FREQUENCY REQUIREMENTS
15 - 3. 1 GENERAL REQUIREMENTS
15 - 3.2 MSLS TRANSMITTER REQUIREMENTS
20 - 3. 3 MSLS RECEIVER REQUIREMENTS
22 - 3. 4 MSLS LOCATOR RECOMMENDATIONS
23 - APPENDIX A CLIMATIC AND DURABILITY TESTS FOR MSLS TRANSMITTERS,
23 - A1 MSLS TRANSMITTERS
23 - A2 MSLS RECEIVERS AND MSLS LOCATORS
6 - FOREWORD

This Standard provides the minimum requirements for Maritime Survivor Locating Systems (MSLSs) intended for very short-range crew retrieval applications operating on 121.5 MHz commonly referred to as man-overboard systems. The MSLS is designed to allow for self help from the vessel or organization where there is a risk of crew falling overboard by sounding an alert from the onboard receiver. MSLS transmitters are not meant to rely on alerting through the COSPAS-SARSAT satellite system.These devices are not stand alone personal EPIRBs but are part of an integrated system that also includes a receiver and warning device on the vessel, and may include some form of localizing device such as, but not limited to, direction finding equipment. While this Standard does not cover the requirements for personal beacons given in AS/NZS4330, personal beacons may be used in conjunction with an MSLS. MSLS receivers and locators should be designed to also operate in conjunction with EPIRBs or other distress beacons using the frequency 121.5 MHz.These minimum requirements encompass the physical characteristics of the devices, as they pertain to maritime use. For MSLS transmitters, both the radiated power and the length of time for operation are reduced to enable the equipment to be sufficiently small and light to be worn comfortably at all times when a person is operating in an open maritime environment. Some characteristics have been specified in order that MSLS beacons do not interfere with the COSPAS-SARSAT satellite system. MSLS may also be developed and employed on other frequencies including those covered by the Australian Communications Authoritys Class license for low interference impact devices or the New Zealand Ministry of Economic Developments General user radio license. Those systems are not within the scope of this part of the Standard. The technical requirements for short-range devices are contained in AS/NZS 4268.

First published as AS/NZS 4869.1:2005.