§  73.811   LPFM power and antenna height requirements.

   (a) LP100 stations: (1) Maximum facilities. LP100 stations will be
   authorized to operate with maximum facilities of 100 watts effective
   radiated power (ERP) at 30 meters antenna height above average terrain
   (HAAT). An LP100 station with a HAAT that exceeds 30 meters will not be
   permitted to operate with an ERP greater than that which would result
   in a 60 dBu contour of 5.6 kilometers. In no event will an ERP less
   than one watt be authorized. No facility will be authorized in excess
   of one watt ERP at 450 meters HAAT.

   (2) Minimum facilities. LP100 stations may not operate with facilities
   less than 50 watts ERP at 30 meters HAAT or the equivalent necessary to
   produce a 60 dBu contour that extends at least 4.7 kilometers.

   (b) LP10 stations: (1) Maximum Facilities. LP10 stations will be
   authorized to operate with maximum facilities of 10 watts ERP at 30
   meters HAAT. An LP10 station with a HAAT that exceeds 30 meters will
   not be permitted to operate with an ERP greater than that which would
   result in a 60 dBu contour of 3.2 kilometers. In no event will an ERP
   less than one watt be authorized. No facility will be authorized in
   excess of one watt ERP at 100 meters HAAT.

   (2) Minimum Facilities. LP10 stations may not operate with less than
   one watt ERP.