[Code of Federal Regulations] [Title 47, Volume 2] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 47CFR23.54] [Page 224] TITLE 47--TELECOMMUNICATION CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) PART 23_INTERNATIONAL FIXED PUBLIC RADIOCOMMUNICATION SERVICES--Table of Contents Sec. 23.54 Use of double sideband radiotelephone. Use of double sideband radiotelephone transmissions, on frequencies below 30 MHz, shall be held to a minimum with a view towards discontinuance of such operations as soon as possible. Except in cases where the foreign correspondent is unable to receive single sideband transmissions, double sideband radiotelephone shall not be transmitted after January 1, 1965.