Admiralty list of radio signals. Vol 2. NP282 (2) (ALRS). 2025. Radio aids to navigation, differential GPS (DGPS) legal time, radio time signals and electronic position fixing system. The Americas, Far East and Oceania

Издание на английском языке The Sixth Edition (2025) of ALRS Volume 2 contains the latest information received by the UKHO. All reasonable effort has been made to ensure that this Volume contains all of the information obtained and assessed by the UKHC by the date of publication. Information received after that date will be included in Section VI of the Weekly Edition of ADMIRALTY Notices to Mariners. This edition supersedes the Fifth Edition (2024) which is cancelled.. ADMIRALTY List of Radio Signals (ALRS) provides a comprehensive source of information on all aspects of Maritime Radio Communications. The purpose of this Volume is to provide information on the following topics: Listing of VHF Radio Direction-Finding Stations Worldwide Listing of Radar Beacons (Racons and Ramarks) Worldwide Listing of Automatic Identification System (AIS) Aids to Navigation (AtoN) Worldwide Listing of Radiobeacons Transmitting DGPS Corrections International Standard and Daylight Saving Times and Dates International Radio Time Signal Broadcast Details Electronic Position Fixing System Contents Directions for Updating This Volume/Record of Updates/Annual Notices to Mariners Contents Preface/Purpose of Admiralty Radio Signals How to report new or suspected dangers to navigation or changes observed in aids to navigation Feedback UKHO Contact Details/How to obtain Admiralty Charts and Publications Related Admiralty Publications and their Contents General Information Abbreviations and Glossary Radio Direction-Finding Stations: Definitions and General Information Introduction Service Details Radar Beacons (Racons and Ramarks): General Information Introduction Service Details Automatic Identification System (AIS): General Information Introduction Maritime Identification Digits Service Details: Satellite-based Global Positioning Systems Differential GPS (DGPS) Overview Radiobeacons Transmitting DGPS Corrections: Introduction Service Details Diagrams for Radiobeacons Transmitting DGPS Corrections Standard Times Legal Time Universal Time Radio Time Signals: Introduction Service Details Electronic Position Fixing System: LORAN-C Index of Radio Direction-Finding Stations Index of Radar Beacons Index of Automatic Identification System Aids to Navigation (AIS AtoN) Radiobeacons Transmitting DGPS Corrections - Index of Countries Index of Radiobeacons Transmitting DGPS Corrections Radio Time Signals - Index of Countries Index of Stations Transmitting Radio Time Signals Index of Call Signs of Stations Transmitting Radio Time Signals International Morse Code and Conventional Signals Certificate of Authenticity