RF Report (5 Results Way)Page 1
7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Compliance Statement
Based on information provided by AT&T Mobility and predictive modeling, the November Drive installation
proposed by AT&T Mobility will be compliant with Radiofrequency Radiation Exposure Limits of 47 C.F.R. §§
1.1307(b)(3) and 1.1310. RF alerting signage at the base of the Monopine and restricting access to authorized
climbers that have completed RF safety training is required for Occupational environment compliance. The
proposed operation will not expose members of the General Public to hazardous levels of RF energy at ground
level or in adjacent buildings.
Certification
I, David C. Cotton, Jr., am the reviewer and approver of
this report and am fully aware of and familiar with the
Rules and Regulations of both the Federal
Communications Commissions (FCC) and the
Occupational Safety and Health Administration (OSHA)
with regard to Human Exposure to Radio Frequency
Radiation, specifically in accordance with FCCβs OET
Bulletin 65. I have reviewed this Radio Frequency
Exposure Assessment report and believe it to be both
true and accurate to the best of my knowledge.
General Summary
The compliance framework is derived from the Federal Communications Commission (FCC) Rules and
Regulations for preventing human exposure in excess of the applicable Maximum Permissible Exposure
(βMPEβ) limits. At any location at this site, the power density resulting from each transmitter may be expressed
as a percentage of the frequency-specific limits and added to determine if 100% of the exposure limit has been
exceeded. The FCC Rules define two tiers of permissible exposure differentiated by the situation in which the
exposure takes place and/or the status of the individuals who are subject to exposure. General Population /
Uncontrolled exposure limits apply to those situations in which persons may not be aware of the presence of
electromagnetic energy, where exposure is not employment-related, or where persons cannot exercise control
over their exposure. Occupational / Controlled exposure limits apply to situations in which persons are exposed
as a consequence of their employment, have been made fully aware of the potential for exposure, and can
exercise control over their exposure. Based on the criteria for these classifications, the FCC General
Population limit is considered to be a level that is safe for continuous exposure time. The FCC General
Population limit is 5 times more restrictive than the Occupational limits.
In situations where the predicted MPE exceeds the General Population threshold in an accessible area as a
result of emissions from multiple transmitters, FCC licensees that contribute greater than 5% of the aggregate
MPE share responsibility for mitigation.
Radio Frequency Emissions Compliance Report For AT&T Mobility
Site Name: November Drive Site Structure Type: Monopine
Address: 5 Results Way Latitude: 37.3194944
Cupertino, CA 95014 Longitude: -122.0527278
Report Date: July 28, 2021 Project: Modification
November Drive - Modification 07.28.2021
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Table 1: FCC Limits
Frequency
(MHz)
Limits for General Population/ Uncontrolled Exposure Limits for Occupational/ Controlled Exposure
Power Density
(mW/cm2)
Averaging Time
(minutes)
Power Density
(mW/cm2)
Averaging Time
(minutes)
30-300 0.2 30 1 6
300-1500 f/1500 30 f/300 6
1500-100,000 1.0 30 5.0 6
f=Frequency (MHz)
Based on the computational guidelines set forth in FCC OET Bulletin 65, Waterford Consultants, LLC has
developed software to predict the overall Maximum Permissible Exposure possible at any location given the
spatial orientation and operating parameters of multiple RF sources. The power density in the Far Field of an
RF source is specified by OET-65 Equation 5 as follows:
ππ= πΈπΈπΈπΈπΈπΈπΈπΈ4β ππβ πΈπΈ2 (mW/cm2)
where EIRP is the Effective Radiated Power relative to an isotropic antenna and R is the distance between
the antenna and point of study. Additionally, consideration is given to the manufacturersβ horizontal and
vertical antenna patterns as well as radiation reflection. At any location, the predicted power density in the
Far Field is the spatial average of points within a 0 to 6-foot vertical profile that a person would occupy. Near
field power density is based on OET-65 Equation 20 stated as
ππ=οΏ½180πππ΅π΅π΅π΅οΏ½β 100 β ππππππππβ π π β β (mW/cm2)
where Pin is the power input to the antenna, ΞΈBW is the horizontal pattern beamwidth and h is the aperture
length.
Some antennas employ beamforming technology where RF energy allocated to each customer device is
dynamically directed toward their location. In the analysis presented herein, predicted exposure levels are
based on all beams at full utilization (i.e. full power) simultaneously focused in any direction. As this condition
is unlikely to occur, the actual power density levels at ground and at adjacent structures are expected to be
less that the levels reported below. These theoretical results represent maximum-case predictions as all RF
emitters are assumed to be operating at 100% duty cycle.
November Drive - Modification 07.28.2021
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Analysis
AT&T Mobility proposes the following installation at this location:
β’ REMOVE AND REPLACE (6) EXISTING ANTENNAS, TYP. (2) PER SECTOR
The antennas will be mounted on a 69-foot Monopine with centerlines 65 & 58 feet above ground level.
Proposed antenna operating parameters are listed in Appendix A. Other appurtenances such as GPS
antennas, RRUs and hybrid cable below the antennas are not sources of RF emissions. No other antennas
are known to be operating in the vicinity of this site.
Figure 1: Antenna Locations
November Drive - Modification 07.28.2021
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Power density decreases significantly with distance from any antenna. The panel-type antennas to be
employed at this site are highly directional by design and the orientation in azimuth and mounting elevation,
as documented, serves to reduce the potential to exceed MPE limits at any location other than directly in front
of the antennas. For accessible areas at ground level, the maximum predicted power density level resulting
from all AT&T Mobility operations is 23.58% of the FCC General Population limits. Incident at adjacent
buildings depicted in Figure 1, the maximum predicted power density level resulting from all AT&T Mobility
operations is 45.9282% of the FCC General Population limits. The proposed operation will not expose
members of the General Public to hazardous levels of RF energy at ground level or in adjacent buildings.
Waterford Consultants, LLC recommends posting RF alerting signage with contact information (Caution 2B) at
the base of the Monopine to inform authorized climbers of potential conditions near the antennas. These
recommendations are depicted in Figure 2.
Recommendations
AT&T Mobility
Access Location
Caution 2B sign
required on the base
of the monopine at the
access location.
Materials β
Caution 2B Sign
Figure 2: Mitigation Recommendations
November Drive - Modification 07.28.2021
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Appendix A: Operating Parameters Considered in this Analysis
Antenna #: Carrier: Manufacturer Pattern: Band (MHz):
Mech
Az
(deg):
Mech
DT
(deg):
H BW
(deg):
Length
(ft):
TPO
(W): Channels:
Loss
(dB):
Gain
(dBd):
ERP
(W):
EIRP
(W):
Rad
Center
(ft):
1 AT&T ERICSSON SON_AIR6449 NR TB 3700 AT&T 3700 20 0 11 2.8 320 1 1.25 23.55 54344 89156 65
2 AT&T COMMSCOPE NNHH-65A-R4 02DT 700 20 0 74 4.6 40 2 1.25 10.35 650 1067 65
2 AT&T COMMSCOPE NNHH-65A-R4 02DT 850 20 0 66 4.6 40 2 0 11.55 1143 1875 65
2 AT&T COMMSCOPE NNHH-65A-R4 02DT 2300 20 0 60 4.6 25 4 1.25 15.95 2951 4842 65
3 AT&T KATHREIN 80010767 02DT 700 20 0 67 4.8 60 2 1.25 11.42 1248 2047 58
3 AT&T KATHREIN 80010767 02DT 850 20 0 59 4.8 60 2 1.25 11.66 1319 2164 58
3 AT&T KATHREIN 80010767 03DT 1900 20 0 61 4.8 40 4 1.25 15.3 4066 6670 58
4 AT&T COMMSCOPE NNHH-65A-R4 02DT 700 20 0 74 4.6 40 4 1.25 10.35 1301 2134 58
4 AT&T COMMSCOPE NNHH-65A-R4 02DT 2100 20 0 61 4.6 40 4 1.25 15.45 4208 6904 58
5 AT&T ERICSSON SON_AIR6449 NR TB 3700 AT&T 3700 260 0 11 2.8 320 1 1.25 23.55 54344 89156 65
6 AT&T COMMSCOPE NNHH-65A-R4 02DT 700 260 0 74 4.6 40 2 1.25 10.35 650 1067 65
6 AT&T COMMSCOPE NNHH-65A-R4 02DT 850 260 0 66 4.6 40 2 0 11.55 1143 1875 65
6 AT&T COMMSCOPE NNHH-65A-R4 02DT 2300 260 0 60 4.6 25 4 1.25 15.95 2951 4842 65
7 AT&T KATHREIN 80010767 02DT 700 260 0 67 4.8 60 2 1.25 11.42 1248 2047 58
7 AT&T KATHREIN 80010767 02DT 850 260 0 59 4.8 60 2 1.25 11.66 1319 2164 58
7 AT&T KATHREIN 80010767 03DT 1900 260 0 61 4.8 40 4 1.25 15.3 4066 6670 58
8 AT&T COMMSCOPE NNHH-65A-R4 02DT 700 260 0 74 4.6 40 4 1.25 10.35 1301 2134 58
8 AT&T COMMSCOPE NNHH-65A-R4 02DT 2100 260 0 61 4.6 40 4 1.25 15.45 4208 6904 58
9 AT&T ERICSSON SON_AIR6449 NR TB 3700 AT&T 3700 140 0 11 2.8 320 1 1.25 23.55 54344 89156 65
10 AT&T COMMSCOPE NNHH-65A-R4 02DT 700 140 0 74 4.6 40 2 1.25 10.35 650 1067 65
10 AT&T COMMSCOPE NNHH-65A-R4 02DT 850 140 0 66 4.6 40 2 0 11.55 1143 1875 65
10 AT&T COMMSCOPE NNHH-65A-R4 02DT 2300 140 0 60 4.6 25 4 1.25 15.95 2951 4842 65
11 AT&T KATHREIN 80010767 02DT 700 140 0 67 4.8 60 2 1.25 11.42 1248 2047 58
11 AT&T KATHREIN 80010767 02DT 850 140 0 59 4.8 60 2 1.25 11.66 1319 2164 58
11 AT&T KATHREIN 80010767 03DT 1900 140 0 61 4.8 40 4 1.25 15.3 4066 6670 58
12 AT&T COMMSCOPE NNHH-65A-R4 02DT 700 140 0 74 4.6 40 4 1.25 10.35 1301 2134 58
November Drive - Modification 07.28.2021
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Antenna #: Carrier: Manufacturer Pattern: Band (MHz):
Mech
Az
(deg):
Mech
DT
(deg):
H BW
(deg):
Length
(ft):
TPO
(W): Channels:
Loss
(dB):
Gain
(dBd):
ERP
(W):
EIRP
(W):
Rad
Center
(ft):
12 AT&T COMMSCOPE NNHH-65A-R4 02DT 2100 140 0 61 4.6 40 4 1.25 15.45 4208 6904 58
Notes: Table depicts recommended operating parameters for AT&T Mobility proposed operations.