47 U.S.C. § 324 : US Code - Section 324: Use of minimum power

Search 47 U.S.C. § 324 : US Code - Section 324: Use of minimum power

In all circumstances, except in case of radio communications or
signals relating to vessels in distress, all radio stations,
including those owned and operated by the United States, shall use
the minimum amount of power necessary to carry out the
communication desired.