[Code of Federal Regulations] [Title 33, Volume 1] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR62.55] [Page 150] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 62--UNITED STATES AIDS TO NAVIGATION SYSTEM--Table of Contents Subpart C--Maritime Radiobeacons Sec. 62.55 General. Maritime radiobeacons operate during specific intervals as published in Coast Guard Light Lists. For station identification, simple characteristics consisting of combinations of dots and dashes are used. The characteristics of marker-beacons are composed of series of dashes for part of a 15 second cycle, which is followed by a silent period to complete the cycle. The transmitted power of maritime radiobeacons is adjusted to provide a useable signal at the service range which meets the operational requirement. Marker-beacons are of low power for local use only. Coast Guard maritime radiobeacons operate within the frequency band 275-335 kilohertz.