Terminology. In addition to the terms defined in §
205-4, Definitions, of this chapter, the following words, which are technical terms applying to wireless communications facilities, shall have the meanings indicated below. Although set forth here for convenience, the terms shall have the same effect as if set forth in §
205-4, Definitions.
ABANDONED TOWER
A tower not being used for the purpose for which it was permitted
for a period of 12 months. Failure to file the annual declaration
with the Westminster Select Board shall constitute an abandonment
of the tower.
[Amended 11-16-2021 STM by Art. 4]
ACT
The Federal Telecommunications Act of 1996.
ADEQUATE COVERAGE
Coverage is adequate within that area surrounding a base
station where the predicted or measured median field strength of the
transmitted signal is such that the majority of the time transceivers
properly installed and operated will be able to communicate with the
base station without objectionable noise (or excessive bit-error-rate
for digital) and without calls being dropped. In the case of cellular
communications in a rural environment, this would be signal strength
of at least 90 DBMs. It is acceptable for there to be minor temporary
loss of signal within the area of adequate coverage. The outer boundary
of the area of adequate coverage is that location past which the signal
does not regain uniformly.
ANTENNA
A device by which electromagnetic waves are sent or received,
whether a dish, rod, mast, pole, set of wires, plate, panel, line,
cable or other arrangement serving such purpose.
ANTENNA SUPPORT STRUCTURE
Any pole, telescoping mast, tower tripod, or any other structure
which supports a device used in the transmitting and/or receiving
of electromagnetic waves.
AVAILABLE SPACE
The space on a tower or other structure to which antennas
of a wireless communications service provider are able to fit structurally
and be able to provide adequate coverage.
BASE STATION
The primary sending and receiving site in a telecommunications
facility network. More than one base station and/or more than one
variety of telecommunications provider may be located on a single
tower or structure.
BUILDING FOR EQUIPMENT SHELTER
An enclosed structure used to contain batteries, electrical
equipment, telephone lines, transmitters, etc. used by the carriers
on the towers.
BUILDING-MOUNTED ANTENNA SUPPORT STRUCTURE
Any antenna support structure mounted on, erected on, or
supported in whole or part by a building or structure occupied and/or
used for purposes other than wireless telecommunications.
CAMOUFLAGED
A wireless service facility that is placed within an existing
or proposed structure disguised, painted, colored, or hidden by a
compatible part of an existing or proposed structure, or made to resemble
an architectural feature of the building or structure on which it
is placed. The term "stealth" is sometimes used as a synonym for "camouflaged."
CARRIER
A company, authorized by the FCC, that provides wireless
communications services.
CHANNEL
One of the assigned bands of radio frequencies as defined
in the Act, licensed to the service provider for wireless service
use.
COLLOCATION
The use of a single mount by more than one carrier and/or
several mounts on a building or structure by more than one carrier.
Each service on a collocation is a separate wireless service facility.
COMMUNICATIONS EQUIPMENT SHELTER
A structure designed principally to enclose equipment used
in connection with wireless communications transmission, and/or reception.
COMMUNICATIONS TOWER
A monopole or self-supporting tower, constructed as a freestanding
structure or in association with a building, other permanent structure
or equipment, containing one or more antennas intended for transmitting
and/or receiving wireless communications.
CONCEALED
A wireless service facility within a building or other structure,
which is not visible from outside the structure.
CONSULTANT
A qualified engineer licensed in the Commonwealth of Massachusetts,
selected by the ZBA or DAC at the expense of the applicant to review
the application and verify that the new tower is necessary at the
proposed site, or any other review required under this section or
requested by the ZBA or DAC, as the case may be.
DAC
Design Advisory Committee.
DBM
A unit of measure of the power level of an electromagnetic
signal expressed in decibels referenced to one milliwatt.
dBu
Unit of measure of the electric field strength of a signal,
expressed in an absolute measure for describing service areas and
comparing different transmitting facilities independent of the many
variables (See "DBM" above.) introduced by different receiver configurations.
EA
See "Environmental Assessment."
EMERGENCY POWER
Electrical generators usually powered by propane gas or diesel
fuel so as to provide uninterrupted service in the case of electrical
utility failure, provided that any generators used may not emit more
than 35 decibels over the ambient noise level at the property line.
ENVIRONMENTAL ASSESSMENT
An EA is the document required by the FCC and NEPA when a
personal wireless facility is placed in certain designated areas.
FAA
Federal Aviation Administration.
FACILITY SITE
A conforming lot or parcel, or any part thereof, which is
owned or leased by one or more wireless communications providers and
upon which one or more wireless communications facility(s) and required
landscaping are located.
FALL ZONE
The area on the ground within a prescribed radius from the
base of a tower, typically the area within which there is a potential
hazard from falling debris, or collapsing material.
FCC
Federal Communications Commission.
FREQUENCY
The number of cycles completed each second by an electromagnetic
wave, measured in hertz (Hz), megahertz (MHz, one million hertz),
or gigahertz (GHz, one billion hertz).
HERTZ
One hertz (Hz) is the frequency of an electric or magnetic
field which reverses polarity once each second, or one cycle per second.
LATTICE TOWERS
A type of mount that is self-supporting with multiple legs
and crossbracing of structural steel.
MODIFICATION OF AN EXISTING FACILITY
Any material change or proposed change to an existing facility,
including but not limited to power input or output, number of antennas,
change in antenna type or model, repositioning of antenna(s), removal
or replacement of transmission equipment, colocation of new transmission
equipment, or change in number of channels per antenna above the maximum
number approved under an existing permit or special permit.
[Amended STM 11-29-2012 by Art. 13]
MONITORING
The measurement, by the use of instruments away from the
antenna, of the electromagnetic radiation from a site as a whole,
or from individual wireless communications facilities, towers, antennas,
repeaters or associated power supplies and generators.
MONOPOLE
A single self-supporting vertical pole with no guy wire anchors,
usually consisting of a galvanized or other unpainted metal, or a
wooden pole with below grade foundations.
NEPA
National Environmental Policy Act.
REPEATER
A small receiver/relay transmitter of not more than 20 watts
output designed to provide service to areas which are not able to
receive adequate coverage from the primary sending and receiving site
in a wireless communications network.
RFI
Radio frequency interference.
RFR
Radio frequency radiation.
SCENIC VIEW
A wide-angle or panoramic field of sight and may include
natural and/or man-made structures and activities which may be seen
from a stationary viewpoint or as one travels along a roadway, waterway,
or path, and may be to an object in the distance, such as a mountain,
or an object nearby, such as an historic building or a pond.
SPECIAL PERMIT
A permit under this section and §
205-50 of this chapter as granted by the Zoning Board of Appeals (ZBA).
SPECTRUM
Relating to any transmissions or reception of electromagnetic
waves.
STRUCTURALLY ABLE
The determination that a tower or structure is capable of
carrying the load imposed by the proposed new antenna(s) under all
reasonable predictable conditions as determined by professional structural
engineering analysis.
TOWER
A structure or framework, or monopole, that is designed to
support wireless communications transmitting, receiving, and/or relaying,
antennas and/or equipment. Components of the wireless communications
facility used only to attach or support other elements of that facility
are excluded, provided such components are relatively less substantial
than those other elements and do not materially affect a dimension
of that facility.
TOWER HEIGHT
The vertical distance measured from the base of the tower
support structure to the highest point of the structure. If the support
structure is on a sloped grade, then the average between the highest
and lowest grades shall be used in calculating the tower height.
TOWN
Westminster, Massachusetts, and/or its elected or appointed
officials.
WCFOD
Wireless Communications Facilities Overlay District.
WIRELESS COMMUNICATIONS FACILITY
All equipment, buildings, and structures with which a wireless
communications service carrier broadcasts and receives the radio-frequency
waves which carry their services and all locations of said equipment
or any part thereof.
WIRELESS COMMUNICATIONS SERVICES
Commercial mobile radio services, unlicensed wireless services,
and common carrier wireless exchange access services as defined in
the Act.
ZBA
Zoning Board of Appeals.