§ 73.614   Power and antenna height requirements.

   (a) Minimum requirements. Applications will not be accepted for filing if
   they specify less than −10 dBk (100 watts) horizontally polarized visual
   effective radiated power in any horizontal direction. No minimum antenna
   height above average terrain is specified.

   (b) Maximum power. Applications will not be accepted for filing if they
   specify a power which exceeds the maximum permitted boundaries specified in
   the following formulas:

   (1) Channels 2-6 in Zone I:

   ERPMax = 102.57-33.24*Log10(HAAT)

   And,

   −10 dBk ≤ERPMax≤20 dBk

   (2) Channels 2-6 in Zones II and III:

   ERPMax = 67.57-17.08* Log10 (HAAT)

   And,

   10 dBk ≤ERPMax≤20 dBk

   (3) Channels 7-13 in Zone I:

   ERPMax = 107.57-33.24* Log10 (HAAT)

   And,

   −4.0 dBk ≤ERPMax ≤25 dBk

   (4) Channels 7-13 in Zones II and III:

   ERPMax = 72.57-17.08* Log10 (HAAT)

   And,

   15 dBk ≤ERPMax≤25 dBk

   (5) Channels 14-69 in Zones I, II, and III:

   ERPMax = 84.57-17.08* Log10 (HAAT)

   And,

   27 dBk ≤ERPMax≤37 dBk

   Where:

   ERPMax = Maximum Effective Radiated Power measured in decibels above 1 kW
   (dBk).

   HAAT = Height Above Average Terrain measured in meters.

   The boundaries specified are to be used to determine the maximum possible
   combination of antenna height and     ERPdBk. When specifying an ERPdBk less
   than that permitted by the lower boundary, any antenna HAAT can be used.
   Also, for values of antenna HAAT greater than 2,300 meters the maximum ERP
   is the lower limit specified for each equation.

   (6) The effective radiated power in any horizontal or vertical direction may
   not exceed the maximum values permitted by this section.

   (7) The effective radiated power at any angle above the horizontal shall be
   as low as the state of the art permits, and in the same vertical plane may
   not exceed the effective radiated power in either the horizontal direction
   or below the horizontal, whichever is greater.

   (c) Determination of applicable rules. The zone in which the transmitter of
   a television station is located or proposed to be located determines the
   applicable rules with respect to maximum antenna heights and powers for VHF
   stations when the transmitter is located in Zone I and the channel to be
   employed is located in Zone II, or the transmitter is located in Zone II and
   the channel to be employed is located in Zone I.

   [ 28 FR 13660 , Dec. 14, 1963, as amended at  42 FR 20823 , Apr. 22, 1977;  42 FR 48881 , Sept. 26, 1977;  47 FR 35990 , Aug. 18, 1982;  50 FR 23698 , June 5,
   1985;  56 FR 49707 , Oct. 1, 1991;  58 FR 51250 , Oct. 1, 1993]

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