Admiralty list of radio signals.
Great Britain.Hydrographic Office.
Great Britain.Admiralty.
Great Britain.Hydrographic Department.
London : H.M.S.O.,
Taunton, Somerset : United Kingdom Hydrographic Office.
1940-
Issued in several parts: in 2010/2011, 6 volumes, each with distinctive title, some divided into two or more parts.
Early editions published in smaller format: 23 cm.
Some issues (esp. from early 1970s) catalogued individually.
"Admiralty Charts and Publications" -- cover.

Previous volume titles: Vol. 1. Coast radio stations -- v. 2. Radio direction-finding stations, radiobeacons, radar beacons -- v. 3. Radio weather services -- v. 4 Meteorological observation stations -- v. 5. Radio time signals, radio navigational warnings and position-fixing systems -- v. 6. Pilot services and port operations.
Volumes and parts may vary.
Includes supplements.
Latest issue consulted: 2014/15.
Aids to navigation
Radio in navigation
Signals and signaling
Harbors
Admiralty list of wireless signals