Sec. 95.49  Considerations near large urban areas.

    (a) A fixed station at a point near a large urban area must have:
    (1) A directional antenna (at least 15 decibel front-to-back ratio); 
and
    (2) No more than 15 watts transmitter power output.
    (b) Where these rules use the term near a large urban area, it means 
the region within a circular band around a large urban area. The band is 
40 kilometers (25 miles) wide. It begins at the rim of the large urban 
area, and extends out 161 kilometers (100 miles) around the geographic 
center of the city.
    (c) Fixed stations authorized before October 16, 1983 located beyond 
161 kilometers (100 miles) of the geographic center of urbanized areas 
of 200,000 or more population as defined in the U.S. Census of 
Population, 1960, Vol. 1, table 23, page 50, are not subject to the 
restrictions of this rule section.