Region 2, commonly known as the "expanded band", and running from 1610 kHz to 1700 kHz. The 1950 NARBA provisions are still in effect for the Bahamas, the Dominican Republic, and United States because those countries have not formally abrogated NARBA. The United States also has active bilateral agreements with Canada ("Agreement Between the Government of the United States of America and the Government of Canada Relating to the AM Broadcasting Service in the Medium Frequency Band" (1984) and Mexico ("Agreement Between the Government of the United States of America and the Government of the United Mexican States Relating to the AM Broadcasting Service in the Medium Frequency Band" (1986)). See also Canadian allocations changes under NARBA Clear-channel station — Includes a list of current North American clear-channel stations Geneva Frequency Plan of 1975 — Similar agreement covering the rest of the world External links Arrangement between the United States of America, Canada, Cuba, the Dominican Republic, Haiti, and Mexico, comprising recommendations of the North American Regional Radio-Engineering Meeting (supplemental to North American Regional Broadcasting Agreement, Habana, 1937). Signed at Washington January 30, 1941; effective March 29, 1941. • Agreement text (pages 1398–1400) • Canadian station assignments by frequency (pages 1408–1410) • Cuban station assignments by frequency (pages 1411–1414) • Dominican Republic station assignments by frequency (page 1414) • Haitian station assignments by frequency (page 1415) • Mexican station assignments by frequency (pages 1415–1420) • United States station assignments by frequency (pages 1421–1443) "AM Station Classes, and Clear, Regional, and Local Channels" FCC provided information about AM station classes (fcc.gov) "Big USA, Mexico, and Canadian AM Radio Stations" Additional information about Clear, Regional and Local AM frequencies in Canada, Mexico and the U.S. (ac6v.com) "Building the Broadcast Band" by Thomas H. White. Early development of the 520–1700 kHz Medium wave (AM) band (earlyradiohistory.us) "Behind the Clear-Channel Matter" by Mark Durenberger. Historical information about clear-channel AM radio stations (oldradio.com) References Treaties entered into force in 1941 1941 in radio 1941 in Canada 1941 in Mexico 1941 in the United States Radio in the United States Bandplans Mass media in Bermuda Radio in Haiti History of radio Mass media regulation in Canada Radio in Canada Radio in the Caribbean Law in the Caribbean Law in North America Radio in Mexico Radio stations in Canada Radio stations in the Caribbean Radio stations in the Dominican Republic Telecommunications treaties United States communications regulation Treaties