Sec. 74.503  Frequency selection.

    (a) Each application for a new station or change in an existing 
station shall be specific with regard to frequency. In general, the 
lowest suitable frequency will be assigned which, on an engineering 
basis, will not cause harmful interference to other stations operating 
in accordance with existing frequency allocations.
    (b) Where it appears that interference may result from the operation 
of a new station or a change in the facilities of an existing station, 
the Commission may require a showing that harmful interference will not 
be caused to existing stations or that if interference will be caused 
the need for the proposed service outweighs the loss of service due to 
the interference.

[ 28 FR 13716 , Dec. 14, 1963]