Sec. 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  ERPMax20 dBk

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

ERPMax=67.57-17.08* Log10 (HAAT)

And,

    10 dBk  ERPMax20 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  ERPMax25 dBk
    (5) Channels 14-69 in Zones I, II, and III:


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ERPMax=84.57-17.08* Log10 (HAAT)

And,

    27 dBk  ERPMax37 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]