§  73.6010   Class A TV station protected contour.

   (a) A Class A TV station will be protected from interference within the
   following predicted signal contours:

   (1) 62 dBu for stations on Channels 2 through 6;

   (2) 68 dBu for stations on Channels 7 through 13; and

   (3) 74 dBu for stations on Channels 14 through 51.

   (b) The Class A TV station protected contour is calculated from the
   effective radiated power and antenna height above average terrain,
   using the F(50,50) charts of Figure 9, 10 or 10b of § 73.699 of this
   part.

   (c) A digital Class A TV station will be protected from interference
   within the following predicted signal contours:

   (1) 43 dBu for stations on Channels 2 through 6;

   (2) 48 dBu for stations on Channels 7 through 13; and

   (3) 51 dBu for stations on Channels 14 through 51.

   (d) The digital Class A TV station protected contour is calculated from
   the effective radiated power and antenna height above average terrain,
   using the F(50,90) signal propagation method specified in
   § 73.625(b)(1) of this part.