Goto Section: 1.30000 | 1.30002 | Table of Contents
FCC 1.30001
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 1.30001 Definitions.
For purposes of this subpart:
(a) Wavelength at the AM frequency. In this subpart, critical distances from
an AM station are described in terms of the AM wavelength. The AM
wavelength, expressed in meters, is computed as follows:
(300 meters)/(AM frequency in megahertz) = AM wavelength in meters.
For example, at the AM frequency of 1000 kHz, or 1 MHz, the wavelength is
(300/1 MHz) = 300 meters.
(b) Electrical degrees at the AM frequency. This term describes the height
of a proposed tower as a function of the frequency of a nearby AM station.
To compute tower height in electrical degrees, first determine the AM
wavelength in meters as described in paragraph (a) of this section. Tower
height in electrical degrees is computed as follows: (Tower height in
meters)/(AM wavelength in meters) × 360 degrees = Tower height in electrical
degrees. For example, if the AM frequency is 1000 kHz, then the wavelength
is 300 meters, per paragraph (a) of this section. A nearby tower 75 meters
tall is therefore [75/300] × 360 = 90 electrical degrees tall at the AM
frequency.
(c) Proponent. The term proponent refers in this section to the party
proposing tower construction or significant modification of an existing
tower or proposing installation of an antenna on an AM tower.
(d) Distance from the AM station. The distance shall be calculated from the
tower coordinates in the case of a nondirectional AM station, or from the
array center coordinates given in CDBS or any successor database for a
directional AM station.
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Goto Section: 1.30000 | 1.30002
Goto Year: 2014 |
2016
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