Chapter 9
| |
COMMUNICATIONS AMPLIFICATION SYSTEMS
| |
§ 900. Definitions. The following words
and terms shall, for the purposes of this section and as used elsewhere
in this code, have the meaning shown herein.
| |
APCO — Associates Public Safety Communications Official
International.
| |
CCDES — Chester County Department of Emergency Services.
| |
FCC — Federal Communications Commission.
| |
NABER — National Association of Business and Education
Radio.
| |
NPSPAC — National Public Safety Planning Advisory Committee.
| |
PCIA — Personal Communications Industry Association.
| |
§ 901. General provisions.
| |
Except as otherwise provided, no person shall erect, construct,
alter, refit, change the use of, or provide an addition of more than
20% of the existing floor area to any building, structure or any part
thereof, or cause the same to be done, which fails to support adequate
radio coverage for CCDES, the Downingtown Fire Department and Ambulance,
Downingtown Police Department and Pennsylvania State Police.
| |
For the purpose of this section, adequate radio coverage shall
include all the following:
| |
1.
|
A minimum signal strength of -95 dBm available in 98% of the
area of each floor of the buildings when transmitted from the closest
CCDES radio communications system site;
|
2.
|
A minimum signal strength of -95 dBm received at the closest
CCDES radio communications site when transmitted from 98% of the area
of each floor of the building.
|
3.
|
The frequency range which must be supported shall be between
821.0125 MHz and 868.6095 MHz.
|
4.
|
A 95% reliability factor.
|
5.
|
Signal strength measurements, for the purpose of measuring the
performance of a bidirectional amplifier, shall be based on one input
signal adequate to obtain a maximum continuous operating out level.
|
6.
|
The provisions of this section shall become applicable upon
notification to the property owner that unacceptable performance levels
exist. The property owner shall have 90 days from the date of notification
to enhance radio coverage and bring it within the acceptable limits
of these provisions.
|
§ 902. Amplification systems allowed.Buildings and structures which cannot support the required level
of radio coverage shall be equipped with either a radiating cable
system or an internal multiple antenna system with or without FCC-type
accepted bidirectional 800 MHz amplifiers as needed. If any part of
the installed system or systems contains an electrically powered component,
the system shall be capable of operating on an independent battery
and/or generator system for a period of at least 12 hours without
external power input. The battery system shall charge in the presence
of an external power input. If used, bidirectional amplifiers shall
include filters to reduce adjacent frequency interference at 35 dB
below the NPSPAC band. Settings used should not attenuate the NPSPAC
frequencies and further provided that they are not more than one MHz
from the NPSPAC frequencies.
| |
§ 903. Testing procedures.
| |
903.1. Acceptance test procedure When an in-building
radio system is required, and upon completion of installation, it
will be the building owner's responsibility to have the radio system
tested to ensure the two-way coverage on each floor of the building
is a minimum of 98%. Each floor of the building shall be divided into
a grid of approximately 20 equal areas. A maximum of two nonadjacent
areas will be allowed to fail the test. In the event that three of
the areas fail the test, in order to be more statistically accurate,
the floor may be divided in 40 equal areas. In such event, a maximum
of four nonadjacent areas will be allowed to fail the test. After
the forty-area test, if the system continues to fail, the building
owner shall have the system altered to meet the 98% coverage requirement.
The test shall be conducted using the most current E.F. Johnson portable
radio or its equivalent, available from the Emergency Services Providers
or CCDES, as specified by the authority having jurisdiction. A spot
located approximately in the center of a grid area will be selected
for the test, then the radio will be keyed to verify two-way communications
to and from the outside of the building through CCDES. Once the spot
has been selected, prospecting for a better spot within the grid area
will not be permitted. The gain values of all amplifiers shall be
measured and the test measurement results shall be kept on file with
the building owner so that the measurements can be verified each year
during the annual tests. In the event that the measurements results
became lost, the building owner will be required to rerun the acceptance
test to reestablish the gain values.
| |
903.2. Annual tests. When an in-building radio
system is required, the building owner shall test all active components
of the system including but not limited to the amplifiers, power supplies
and backup batteries, a minimum of once every 12 months. Amplifiers
shall be tested to ensure that the gain is the same as it was upon
initial installation and acceptance. Backup batteries and power supplies
shall be tested under load for a period of one hour to verify that
they will properly operate during an actual power outage. If within
the one-hour test period, in the opinion of the testing technician,
the batteries exhibit symptoms of failure, the test shall be extended
for an additional hour until the testing technician confirms the integrity
of the battery. All other active components shall be checked to determine
that they area operating within the manufacturer's specifications
for the intended purpose.
| |
903.3. Five-year tests. In addition to the annual
test, the building owner shall perform a radio coverage test of a
minimum of once every five years to ensure to that the radio system
continues to meet the requirements of the original acceptance test.
The procedure set forth above shall apply to such tests. A copy of
accepted tests shall be provided to the CCDES.
| |
§ 904. Field testing.Police, Fire or
Code Personnel, after being provided reasonable notice to the owner
or his representative, shall have the right to enter onto the property
to conduct field testing to be certain that the required levels of
radio coverage is present.
| |
§ 905. Exemptions. This section shall
not apply to structures of Use Group R-3 and R-4. For the purposes
of this section, parking structures and stairwells are included in
the definition of "building" and stair shafts are included in the
definition of "all parts of a building," but elevators may be excluded.
| |
§ 906. Existing buildings and structures.Any non-exempt building or structure, existing, under construction,
or for which a building permit application is pending or has been
approved as of the effective date of this section shall comply with
the requirements of this section, if CCDES, East Caln Township or
the Downingtown Fire Department, determines that adequate radio coverage,
as defined in § 800, does not exist in the building or structure.
The owner of the building or structure shall be notified in writing
of the inadequacy of the coverage and shall have a period of 90 consecutive
calendar days from the date of notice to comply with this section,
including but not limited to enhancing radio coverage and bringing
it within the acceptable limits of this section.
|