[HISTORY: Adopted by the Township Council of the Township of Greenwich 8-4-2008 by Ord. No. 12-2008. Amendments noted where applicable.]
The Greenwich Township Council finds that the ability of police, fire, ambulance and other emergency providers and personnel to communicate with each other within buildings and structures, and to communicate from within structures and buildings to personnel and locations outside the building and structures, is of vital public importance. A breakdown in communications among emergency providers and personnel creates a serious risk of harm to and is a serious threat to the safety and welfare of emergency personnel, the citizens of Greenwich Township and the public in general. Therefore, pursuant to the police power, the Greenwich Township Council enacts this chapter to protect the public health, safety and welfare.
This chapter of the Code of the Township of Greenwich shall be entitled "Communications Amplification Systems."
The following words and terms shall, for the purposes of this chapter and as used elsewhere in this code, have the meanings shown herein.
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 or structure of any part thereof, or cause the same to be done, which fails to support adequate radio coverage for GCER, GCEMS and the Greenwich Township Police, Fire and Ambulance Departments. For the purposes of this chapter, "adequate radio coverage" shall include all of the following:
A minimum signal strength of 100 dBm available in 90% of the area of each floor of the building when transmitted from the closest GCER radio communications system site;
A minimum signal strength of 100 dBm received at the closest GCER radio communications site when transmitted from 90% of the area of each floor of the building;
As the CAS is part of the public safety radio system, the owner must adapt according to any growth changes or modifications as instructed by local authorities;
The frequency range which must be supported shall be compatible to the current public safety radio system in use by the Township of Greenwich;
A 90% reliability factor;
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 output level.
The provisions of this chapter shall become applicable upon notification to the property owner that unacceptable performance levels exist. The property owner shall have 90 days from date of notification to enhance radio coverage and bring it within the acceptable limits of these provisions.
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 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 36 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.
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 that two-way coverage on each floor of the building is a minimum of 90%. 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 owners shall have the system altered to meet the 90% coverage requirement. The test shall be conducted using the most current Motorola portable radio or its equivalent talking through the GCER 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 the GCER. 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 measurement results become lost, the building owner will be required to rerun the acceptance test to reestablish the gain values.
Tests shall be made using the following guidelines:
With a service monitor or signal meter using a unity gain antenna on a small ground plane;
Measurements shall be made with the antenna held in a vertical position at three feet to four feet above the floor;
A calibrated service monitor or signal meter (with a factory calibration dated within 24 months) may be used to do the test;
The GCER representative may also make simultaneous measurements to verify that the equipment is making accurate measurements. A variance of 3 dB between the instruments will be allowed; and
If measurements in one location are varying, then average measurements shall be used.
Tests shall be made using the designated frequencies used by emergency response personnel. All tests shall be made in concert with GCER. If interference problems are noted, it is the owners responsibility to insure action is taken to reduce them.
When an in-building radio system is required, the building owner shall test all active components of the system, including but not limited to 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 battery exhibits symptoms of failure, the test shall be extended for additional one-hour periods until the testing technician confirms the integrity of the battery. All other active components shall be checked to determine that they are operating with the manufacturer's specifications for the intended purpose.
In addition to the annual test, the building owner shall perform a radio coverage test a minimum of once every five years to insure 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 GCER.
All tests shall be conducted, documented and signed by a person in possession of a current FCC technician license, or a current technician certification issued by APCO, NABER, or the PCIA. All test records shall be retained on the inspected premises by the building owner and a copy submitted to municipal officials. All tests will be performed in conjunction with GCER.
Police and fire personnel, after providing 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 level of radio coverage is present.
This chapter shall not apply to: structures in use groups R-3 and R-4; any building constructed of wood frame; and building 35 feet high or less; as long as none of the aforementioned buildings make use of any metal construction or any underground storage or parking areas. For purposes of this chapter, 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.
Any nonexempt building or structure, under construction, or for which a building permit application is pending or has been approved as of the effective date of this chapter shall comply with the requirements of this chapter if GECER, Greenwich Township Fire Department and/or Police Department determines that adequate radio coverage as defined 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 the notice to comply with this chapter; including, but not limited to enhancing radio coverage and bringing it within the acceptable limits of this chapter.