Sec. 73.504  Channel assignments in the Mexican border area.

    (a) NCE-FM stations within 199 miles (320 km) of the United States-
Mexican border shall comply with the separation requirements and other 
provisions of the ``Agreement between the United States of America and 
the United Mexican States Concerning Frequency Modulation Broadcasting 
in the 88 to 108 MHz Band'' as amended.
    (b) Applicants for noncommercial educational FM stations within 199 
miles (320 km) of the United States-Mexican border shall propose at 
least Class A minimum facilities (see Sec. 73.211(a)). However, existing 
Class D noncommercial educational stations may apply to change frequency 
within the educational portion of the FM band in accordance with the 
requirements set forth in Sec. 73.512.
    (c) Section 73.208 of this chapter shall be complied with as to the 
determination of reference points and distance computations used in 
applications for new or changed facilities. However, if it is necessary 
to consider a Mexican channel assignment or authorization, the 
computation of distance will be determined as follows: if a transmitter 
site has been established, on the basis of the coordinates of the site; 
if a transmitter site has not been established, on the basis of the 
reference coordinates of the community, town, or city.

[ 52 FR 43765 , Nov. 16, 1987]