§  73.25   Clear channels; Class A, Class B and Class D stations.

   The frequencies in the following tabulations are designated as clear
   channels and assigned for use by the Classes of stations given:

   (a) On each of the following channels, one Class A station may be
   assigned, operating with power of 50 kW: 640, 650, 660, 670, 700, 720,
   750, 760, 770, 780, 820, 830, 840, 870, 880, 890, 1020, 1030, 1040,
   1100, 1120, 1160, 1180, 1200, and 1210 kHz. In Alaska, these
   frequencies can be used by Class A stations subject to the conditions
   set forth in § 73.182(a)(1)(ii). On the channels listed in this
   paragraph, Class B and Class D stations may be assigned.

   (b) To each of the following channels there may be assigned Class A,
   Class B and Class D stations: 680, 710, 810, 850, 940, 1000, 1060,
   1070, 1080, 1090, 1110, 1130, 1140, 1170, 1190, 1500, 1510, 1520, 1530,
   1540, 1550, and 1560 kHz.

   Note: Until superseded by a new agreement, protection of the Bahama
   Islands shall be in accordance with NARBA. Accordingly, a Class A,
   Class B or Class D station on 1540 kHz shall restrict its signal to a
   value no greater than 5 µV/m groundwave or 25 µV/m-10% skywave at any
   point of land in the Bahama Islands, and such stations operating
   nighttime (i.e., sunset to sunrise at the location of the U.S. station)
   shall be located not less than 650 miles from the nearest point of land
   in the Bahama Islands.

   (c) Class A, Class B and Class D stations may be assigned on 540, 690,
   730, 740, 800, 860, 900, 990, 1010, 1050, 1220, 1540, 1570, and 1580
   kHz.

   [ 28 FR 13574 , Dec. 14, 1963, as amended at  33 FR 4410 , Mar. 12, 1968;
    35 FR 18052 , Nov. 25, 1970;  47 FR 27862 , June 28, 1982;  49 FR 43960 ,
   Nov. 1, 1984;  50 FR 24520 , June 11, 1985;  52 FR 47568 , Dec. 15, 1987;
    53 FR 1031 , Jan. 15, 1988;  54 FR 39736 , Sept. 28, 1989;  56 FR 64857 ,
   Dec. 12, 1991]