Jansen Lane - RF-EME Compliance Report - 10.15.15

8/20/2019 Jansen Lane - RF-EME Compliance Report - 10.15.15

1/13

EBI

Consulting

environmental

|

engineering

|

due

diligence

RADIO FREQUENCY EMISSIONS ANALYSIS REPORT

Albany Proposed Facility

Site ID: Jansen Lane

28 Jansen Lane, Berne, New York 12023

October 15, 2015

EBI Project Number:

6215005207

Status: Compliant

Recommended Signage

Signage is not required


2/13

EBI

Consulting

environmental | engineering | due diligence

October 15, 2015

Attn: Inspector Ralph Mariani

Albany County Sheriff’s Office

911/Communications Center449 New Salem Road

Voorheesville, NY 12186

Emissions Values for Site: Jansen Lane

Maximum Composite Emissions Value: 0.8054% of the FCC’s general public limit (0.16%

of the FCC’s occupational limit). The Proposed site is in compliance with Federalregulations regarding (radio frequency) RF Emissions.

EBI Consulting was directed to analyze the Proposed Albany tower facility located at 28 Jansen Lane in

Berne, New York for the purpose of determining whether the emissions from the Proposed Albany

Antenna Installation located on this property are within specified federal limits. This report contains a

detailed summary of the RF EME analysis for the site.

All information used in this report was analyzed as a percentage of current Maximum Permissible

Exposure (% MPE) as listed in the FCC OET Bulletin 65 Edition 97-01and ANSI/IEEE Std C95.1. The

FCC regulates Maximum Permissible Exposure in units of microwatts per square centimeter (μW/cm2).

The number of μW/cm2 calculated at each sample point is called the power density. The exposure limit

for power density varies depending upon the frequencies being utilized. Wireless Carriers and Paging

Services use different frequency bands each with different exposure limits, therefore it is necessary to

report results and limits in terms of percent MPE rather than power density.

All results were compared to the FCC (Federal Communications Commission) radio frequency

exposure rules, 47 CFR 1.1307(b)(1) – (b)(3), to determine compliance with the Maximum Permissible

Exposure (MPE) limits for General Population/Uncontrolled environments as defined below.

General population/uncontrolled exposure limits apply to situations in which the general public may be


3/13

EBI

Consulting


Public exposure to radio frequencies is regulated and enforced in units of microwatts per square

centimeter (μW/cm2). The general population exposure limit for the 700 and 800 MHz Bands is 467

μW/cm2 and 567 μW/cm2 respectively, and the general population exposure limit for the PCS and AWS

bands is 1000 μW/cm2. Because each carrier will be using different frequency bands, and each frequency

band has different exposure limits, it is necessary to report percent of MPE rather than power density.

Occupational/controlled exposure limits apply to situations in which persons are exposed as a

consequence of their employment and in which those persons who are exposed have been made fully

aware of the potential for exposure and can exercise control over their exposure.

Occupational/controlled exposure limits also apply where exposure is of a transient nature as a result of

incidental passage through a location where exposure levels may be above general

population/uncontrolled limits (see below), as long as the exposed person has been made fully aware of

the potential for exposure and can exercise control over his or her exposure by leaving the area or by

some other appropriate means.

Additional details can be found in FCC OET 65.


4/13

EBI

Consulting


CALCULATIONS

Calculations were done for the Proposed Albany Wireless antenna tower facility located at 28 Jansen

Lane in Berne, New York using the equipment information listed below. All calculations were performed

per the specifications under FCC OET 65. Because of the short wavelength of PCS services, theantennas require line-of-site paths for good propagation, and are typically installed a distance above

ground level. Antennas are constructed to concentrate energy towards the horizon, with as little energy

as possible scattered towards the ground or the sky. This design, combined with the low power of PCS

facilities, generally results in no possibility for exposure to approach Maximum Permissible Exposure

(MPE) levels, with the exception of in areas in the immediate vicinity of the antennas.

For all calculations, equipment was calculated using the following assumptions:

1) One 800 MHz panel antenna channel was considered for the Proposed installation. The

transmit power for this channel is 85 watts per channel.

2) One 800 MHz omnidirectional antenna channel was considered for the Proposed

installation. The transmit power for this channel is 85 watts per channel.

3) Two 7,000 MHz microwave antenna channels were considered for the Proposed installation.

The transmit power for these channel is 1,656.4 watts per channel.

4) All radios at the Proposed installation were considered to be running at full power and were

uncombined in their RF transmissions paths per carrier prescribed configuration. Per FCC

OET Bulletin No. 65 - Edition 97-01 recommendations to achieve the maximum anticipated

value at each sample point, all power levels emitting from the Proposed antenna installation

are increased by a factor of 2.56 to account for possible in-phase reflections from the

surrounding environment. This is rarely the case, and if so, is never continuous.

5) EBI has performed theoretical worst case modeling using Roofview® and microwave

calculations to estimate the maximum potential power density from each antenna based on

worst-case assumptions for the number of antennas and power.


5/13

EBI

Consulting


8) Emissions values for additional carriers were taken from the data provided by Albany in the

supplied drawings. For each additional carrier, known configuration values were utilized to

approximate each systems contribution.

All calculations were done with respect to uncontrolled / general public threshold limits.


6/13

EBI

Consulting


Albany Site Inventory and Power Values

Table 1: Albany Site Inventory and Power Value

Table 2: Additional Carrier Inventory and Emissions Levels

AntennaNumber Sector Antenna Make Antenna Model Antenna Type

Height (ft) AboveNearest Walking

Surface Frequency Band Power PerChannel Azimuth

Number ofChannels

1 A Sinclair SE419-SF3P4LDF-0869 Panel 150.7 800 MHz 85 110 1

2 A Sinclair SC479-HF1LDF Omni 177.0 800 MHz 85 OMNI 1

3 A Andrew PAR6-59W-PXA/A Microwave 97 7,000 MHz 1656.4 81.631

4 A Andrew PAR6-59W-PXA/A Microwave 87 7,000 MHz 1656.4 87.31

Additional Carriers Located on Site

Carrier MPE %

No additional carriers are

located onsite.


7/13

EBI

Consulting


Summary

All calculations performed for this analysis yielded results that were within the allowable limits for

exposure to RF Emissions. Based on predictive modeling, there are no modeled exposures on any

accessible ground-level walking/working surface related to Albany’s equipment in the area that exceed

the FCC’s occupational and/or general public exposure limits at this site.

The anticipated maximum contribution from each sector of the Albany facility is 0.8054% of the

allowable FCC established general public limit (0.1611% of the FCC occupational limit). This was

determined through calculations along a radial from each sector taking full power values into account as

well as actual vertical plane antenna gain values per the manufacturers supplied specifications for gain.

The anticipated maximum composite MPE value for this site is 0.8054% of the allowable FCC established

general public limit (0.1611% of the FCC occupational limit). This is based upon worst case modeling

performed on the ground taking emissions contributions from all carriers present into account. Thisvalue will determine whether the site itself is in compliance with regards to electromagnetic emissions

or whether mitigation solutions may be required to bring the site into compliance.

FCC guidelines state that if a site is found to be out of compliance (over allowable thresholds), that

carriers over a 5% contribution to the composite value will require measures to bring the site into

compliance. For this facility, the composite values calculated were within the allowable 100% threshold

standard per the federal government.

Signage is not required because there is no access within 30 feet of an antenna.

EBI’s modeling indicates that there are no areas on the walking/working surfaces at the ground level in

front of the Albany antennas that may exceed the FCC standards for general population and/or

occupational exposure.

Jos SchorrSenior Scientist


8/13

EBI

Consulting


Figure 1: Walking/Working Surface Emissions Thresholds

PLAN

VIEW

Microwave

Antennas

Sector

A

Panel

and

Omni Antennas

Albany

Antennas


9/13

EBI

Consulting


Attachment 1: Plan View – Signage Locations

Status: Compliant

Recommended Signage for

compliance

Signage is not required

Notes:

The Proposed site will be

compliant with the

installation of the

mitigation measures.

Access Gate

Albany

Antennas

Microwave

Antennas

Sector A

Panel

and

Omni Antennas


10/13

EBI

Consulting


Appendix A

Roofview Export


11/13

StartMapDefinition

Roof Max Roof Max Map Max Map Max Y O ff set X Offset Number of envelope List Of Areas

50 50 70 90 20 20 1 $AE$151:$ $AE$151:$CB$200 $AE$151:$CB$200

StartSettingsData

Standard Method Uptime Scale FactoLow Thr Low Color Mid Thr Mi d Color Hi Thr Hi Color Over Color Ap Ht MultAp Ht Method

4 2 3 1 100 1 500 2 5000 3 3 1.5 1

StartAntennaData It is

advisable

to

provide

an

ID

(ant

1)

for

all

antennas

(MHz) Trans Trans Coax Coax Other Input Calc (ft) (ft) (ft) (ft) dBd BWdth Uptime ON

ID Name Freq Power Count Len Type Loss Power Power Mfg Model X Y Z Type Aper Gain Pt Dir Profile flag

ALB A1 Albany 800 85 1 210 1‐1/4 LDF 1.52 38.0206 Sinclair SE419‐SF3 30 30 150.7 8.6 10 180;110 ON•

ALB A2 Albany 800 85 1 237 1‐1/4 LDF 1.52 35.86236 Sinclair S C479‐HF1 30 30 177 14.45 9.5 OMNI ON•

StartSymbolData

Sym Map Mark Roof X Roof Y Map Label Description ( notes for this table only )

Sym 5 35 AC Unit Sample symbols

Sym 14 5 Roof Access

Sym 45 5 AC Unit

Sym 45 20 Ladder


12/13

EBI

Consulting


Appendix B

Microwave Modeling


13/13

Total Number of Microwaves:

2tower

ground

Andrew PAR6-59W-PXA/A 7000 97 1656.365408 36.05 6 0.102716 0.001027 1.000000 5.000000 0.10272% 0.021% 2

Controlled

Outside

Column (%

MPE)

Minimum

Distance from

Aten na (ft )

Estimation of Power Density from Microwave Dish(es)

Nearest Walking Surface

Structure Type

ERP (Watts) Gain (dBd) Diameter (ft)

Power Density

Inside Column

(mW/cm2)

Power Density

at Ground

(mW/cm2)

General

Population

Limit (mW/cm2)

Occupational

Limit (mW/cm2)

Uncontrolled

Outside

Column (%

MPE)

Manufacturer / Model Frequency (MHz) AGL/ARL (ft)

n rew - - . . . . . . . .

TOTAL 0.00205432 0.20543% 0.04% 2

0.81 0.16

1.01 0.20

0.01* 4 * P

A

outside of transmitti ng column, power is ~ 1% of that inside column

" Summary of Nearfield Power Density Calculations for EBI Consulting", July 21, 2006

Documents

Jansen Lane - RF-EME Compliance Report - 10.15.15