Goto Section: 73.613 | 73.615 | Table of Contents
Revised as of November 23, 2020
Goto Year:2020 |
§ 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)
−10 dBk ≤ERPMax≤20 dBk
(2) Channels 2-6 in Zones II and III:
ERPMax = 67.57-17.08* Log10 (HAAT)
10 dBk ≤ERPMax≤20 dBk
(3) Channels 7-13 in Zone I:
ERPMax = 107.57-33.24* Log10 (HAAT)
−4.0 dBk ≤ERPMax ≤25 dBk
(4) Channels 7-13 in Zones II and III:
ERPMax = 72.57-17.08* Log10 (HAAT)
15 dBk ≤ERPMax≤25 dBk
(5) Channels 14-69 in Zones I, II, and III:
ERPMax = 84.57-17.08* Log10 (HAAT)
27 dBk ≤ERPMax≤37 dBk
ERPMax = Maximum Effective Radiated Power measured in decibels above 1
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]
Goto Section: 73.613 | 73.615
Goto Year: 2020 |
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