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Home My WebLink AboutJ_SESEA00218E_NIER_EME_221227.pdf Radio Frequency Exposure RF Safety and NIER Analysis Report SITE-SPECIFIC-INFORMATION Site Name SESEA00218E Multi-Licensee Facility ☐ YES ☒ NO Street Address 207 Main Ave S Is Dish Wireless a Significant Contributor to Co-Locator Areas Requiring Mitigation? ☐ YES ☐ NO ☒ N/A City, State, Zip Renton, WA 98057 Dish Wireless’s Max % MPE (Measured - General Public) Dish Wireless’s Max % MPE (Predictive - General Public) 2719.41% Structure Type Rooftop Assessment Date Broadcast (AM/FM/TV) Co-Locators ☐ YES ☒ NO Assessment Purpose NSB Total Access Points TBD Total Report Revisions Original Report Date 12/02/2022 Report Revision Date Compliance Status ☐ COMPLIANT AS DESIGNED ☐ COMPLIANT PER RF SAFETY PLAN SUBMISSION ☒MITIGATION IS REQUIRED Site Photo Page 2 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Table of Contents 1 Certification ................................................................................................................ 3 2 Executive Summary .................................................................................................... 3 2.1 Conclusion and Recommendations: ..................................................................... 5 3 Introduction ................................................................................................................. 6 3.1 Site Description: ................................................................................................... 6 3.2 Site Configuration Being Modeled: ..................................................................... 7 4 Predictive Analysis Details: ........................................................................................ 8 4.1 Analysis Locations: .............................................................................................. 8 4.2 Antenna Inventory: ............................................................................................... 9 4.3 RF Emissions Diagram(s) .................................................................................. 10 4.3.1 RF Emissions Diagram(s)- All Transmitters .............................................. 11 4.3.2 RF Emissions Diagram(s)- Dish Wireless Transmitters Only: .................. 19 5 Signage/ Barrier Detail ............................................................................................. 19 5.1 Signage/ Barrier Diagram................................................................................... 27 6 Conclusions and Recommendations: ........................................................................ 29 7 Appendix A: FCC Compliance and RF Safety Policies ........................................... 30 8 Appendix B: Overview of RoofMaster Functions and Assumptions .................... 33 9 References ................................................................................................................. 36 10 Limited Warranty ...................................................................................................... 37 Page 3 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 1 Certification This report, prepared by Pramira, Inc. for Dish Wireless, is intended to document compliance and evaluate power density levels as outlined in the report. The computations, analysis, and resulting report and conclusions were based on applicable FCC guidelines and regulations for maximum permissible exposure to humans consistent with FCC OET Bulletin 65, Edition 97- 01. Additionally, Pramira, Inc. certifies that the assumptions are valid and that the data used within Pramira' control are accurate, including information collected as part of Pramira’ field surveys. Pramira, Inc. does not however certify the accuracy or correctness of any data provided to Pramira, Inc. for this analysis and report by Dish Wireless or other third parties working on behalf of Dish Wireless. I certify that the attached RF exposure analysis and report is correct to the best of my knowledge, and all calculations, assumptions and conclusions are based on generally acceptable engineering practices: _____________________________________________ Tim Alexander, P.E. This compliance assessment and report has been prepared and reviewed by: Preparer Reviewer Name Ibrahim Ali Mike Arnold Title RF Engineer Project Manager Date 12/02/2022 12/02/2022 STATE O F WASHIN G TONREGI ST E R E DP R O F E S S I O N A L E N G I N E E RTIM A L E X ANDER EXPIRES, 3 FEB 2024 SIGNED, 7 DEC 2022 57449 Tim Alexander, PE Digitally signed by Tim Alexander, PE DN: cn=Tim Alexander, PE, o, ou, email=proteuspower@outlook.com, c=US Date: 2022.12.07 14:43:23 -07'00' Page 4 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 2 Executive Summary This report provides the results of an RF power density analysis performed for Dish Wireless at site SESEA00218E in accordance with the Federal Communications Commission (FCC) rules and regulations for RF emissions described in OET Bulletin 65, Edition 97-01. This report addresses RF safety for two classified groups defined by OET Bulletin 65: Occupational/ Controlled and General Population/ Uncontrolled. Based on the analysis, this site will be Compliant with FCC rules and regulations and Dish Wireless ’s Signage and Barrier Policy if the mitigation details provided in Table 1 are implemented. Final Compliant Configuration GUIDELINES NOTICE CAUTION WARNING NOC INFO BARRIER/MARKER Access Point(s) ☒ [TBD] * ☐ [ ] ☐ [ ] ☐ [ ] ☒ [TBD] * ☐ Alpha ☐ [ ] ☐ [ ] ☒ [3] ** ☐ [ ] ☐ [ ] ☒ 4’ x 5’ Marker Beta ☐ [ ] ☐ [ ] ☒ [2] ** ☐ [ ] ☐ [ ] ☐ Gamma ☐ [ ] ☐ [ ] ☒ [3] ** ☐ [ ] ☐ [ ] ☒ 4’ x 12’ Marker NOTE: The table represents either the signage/barriers installed / removed OR items required by the market (if mitigation is not installed by consultant/vendor). * These RF signs should be posted on any Access Point to the Main Roof. (See drawing in Section 5.2) ** These RF signs should be posted on the Marker and at the Back of all sectors. (See drawing in Section 5.2) Specialty Sign Detail Location N/A Access Point N/A Alpha N/A Beta N/A Gamma N/A NOTE: The tables above represent EXISTING compliance items implemented at this location. Notes/ Additional Compliance Requirements(s): Mitigation is required per the Signage/ Barrier Diagram. RF Safety Plan Table 1: Mitigation Requirements for Compliance Page 5 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 2.1 Conclusion and Recommendations:  The results of the analysis indicate that power density levels in the generally accessible areas on the Upper Roof level will exceed the FCC’s MPE limit for General Population and Occupational environments.  The results of the analysis indicate that power density levels in the generally accessible areas on the Main Roof level will exceed the FCC’s MPE limit for General Population and Occupational environments.  The results of the analysis indicate that power density levels in the generally accessible areas on the Balcony level will not exceed the FCC’s MPE limit for General Population environments.  The results of the analysis indicate that power density levels in the generally accessible areas on the Ground level will not exceed the FCC’s MPE limit for General Population environments.  The max theoretical % MPE is 2719.41% (FCC General Public) directly in front of the antenna beams at the Main Roof Level.  NOC and Guidelines Signs need to be posted on any Access Point to the Main Roof.  This site will be operating in general compliance with FCC OET Bulletin 65 and Dish Wireless ’s signage policy as the mitigation requirements outlined in the Executive Summary are implemented. See Signage/Barrier Diagram section for further details on the recommended signage placement locations. Note: Modifications to the site; and/or increases in channel counts or power levels exceeding those listed in this report will require additional evaluation to determine compliance. Page 6 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 3 Introduction The purpose of this analysis and report is to evaluate the cumulative power density levels of all non-excluded antennas located on the site and identify any areas of concern that require mitigation. This report also assesses the site’s compliance with FCC OET Bulletin 65; “Guidelines for Human Exposure to Radio-frequency Electromagnetic Fields”. 3.1 Site Description:  Site Name: SESEA00218E  Street Address 207 Main Ave S Renton, WA 98057  Latitude: 47.4808°  Longitude: -122.204331°  Structure Type Rooftop  Structure Height: 74.5’ AGL  BTS Equipment Location: The BTS Equipment is located on the Main Roof.  Co-Locators/ Other Antennas: N/A  Access: TBD Page 7 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 3.2 Site Configuration Being Modeled:  This Rooftop application where Dish Wireless antennas are mounted to pipes on the Upper Roof for Alpha sector and on the Main Roof for Beta and Gamma sectors.  This will be a Three-Sector site with one Active and two Future antennas in all sectors.  The values of the antennas rad center for Alpha sector (78.5’), antennas rad center for Beta and Gamma sectors (69.1’), Upper Roof Height (74.5’), Main Roof Height (65.1’), Balcony Height (53’), and Lower Roof Height (17’) are based on the CDs and Google Earth. These values must be verified on the site audit for the post study.  Each sector supports 5GNR at 600, 700, 1900, 2100 MHz. All LTE supports MIMO.  All technologies were evaluated assuming the maximum number of channels and were running at maximum power 100% of the time. Page 8 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 4 Predictive Analysis Details: For purposes of this analysis, RoofMaster® was configured to provide an output based on the appropriate MPE limit(s) published in the FCC’s guidelines. The antenna information was loaded into RoofMaster®, an MPE predictive analysis tool by Waterford Consultants, LLC. 4.1 Analysis Locations: Number of Elevations Analyzed: 4  Upper Roof Level  Main Roof Level  Balcony Level  Ground Level  A study at the Lower Roof and Adjacent Roofs levels was not required as the study at the Balcony level shows that the MPE limit is below the General Population MPE limit on the Lower Roof and Adjacent Roofs levels. Page 9 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 4.2 Antenna Inventory: The following table shows all transmitting antennas and contains the technical data used to simulate the power density that may be encountered with all antennas simultaneously operating at full rated power with the exception of any excluded antennas cited in this document. If Co-Locator antennas exist and the use of “Unknown” as an antenna model that means the specific antenna details could not be secured, generic antennas, frequencies, and Tx powers were used for modeling. The assumptions used are based on past experience with communications carriers. Z-height represents the distance from the nearest walking surface to the Centerline of the antenna. The antenna Z-heights listed above are referenced to Top of the Upper Roof, Main Roof, Balcony and Ground Levels. Table 2- Antenna Inventory Page 10 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 4.3 RF Emissions Diagram(s) The RF Emissions Diagram(s) display the Theoretical spatially averaged Maximum Permissible Exposure (MPE) percentages that are expected for each study’s elevation for Dish Wireless antennas and all other carrier antennas at the site. General Population MPE limit is included to demonstrate where Dish Wireless is a significant contributor to accessible areas where multiple carrier’s transmitters are present. These diagrams use modeling as prescribed in OET Bulletin 65 and assumptions detailed in Appendix A. The keys at the bottom of each diagram indicates if percentages displayed are referenced to Occupational Limit and FCC General Public Maximum Permissible Exposure (MPE) limits. % of FCC General Public Exposure Limits % of FCC Occupational Exposure Limits Page 11 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 4.3.1 RF Emissions Diagram(s)- All Transmitters Reference Plane: Upper Roof Level The maximum theoretical % MPE of the General Population limits =2684.95% Page 12 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Upper Roof Level The maximum theoretical % MPE of the Occupational Limit =536.99% Page 13 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Main Roof Level The maximum theoretical % MPE of the General Population limits =2719.41% Page 14 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Main Roof Level The maximum theoretical % MPE of the Occupational Limit =543.88% Page 15 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Balcony Level The maximum theoretical % MPE of the General Population limits =10.48% Page 16 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Balcony Level The maximum theoretical % MPE of the Occupational Limit =2.1% Page 17 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Ground Level The maximum theoretical % MPE of the General Population limits =0.24% Page 18 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Ground Level The maximum theoretical % MPE of the Occupational Limit =0.05% Page 19 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 4.3.2 RF Emissions Diagram(s)- Dish Wireless Transmitters Only: Reference Plane: Upper Roof Level The maximum theoretical % MPE of the General Population limits =2684.95% Page 20 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Upper Roof Level The maximum theoretical % MPE of the Occupational Limit =536.99% Page 21 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Main Roof Level The maximum theoretical % MPE of the General Population limits =2719.41% Page 22 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Main Roof Level The maximum theoretical % MPE of the Occupational Limit =543.88% Page 23 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Balcony Level The maximum theoretical % MPE of the General Population limits =10.48% Page 24 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Balcony Level The maximum theoretical % MPE of the Occupational Limit =2.1% Page 25 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Ground Level The maximum theoretical % MPE of the General Population limits =0.24% Page 26 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Reference Plane: Ground Level The maximum theoretical % MPE of the Occupational Limit =0.05% Page 27 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 5 Signage/ Barrier Detail 5.1 Signage/ Barrier Detail Final Compliant Configuration GUIDELINES NOTICE CAUTION WARNING NOC INFO BARRIER/MARKER Access Point(s) ☒ [TBD] * ☐ [ ] ☐ [ ] ☐ [ ] ☒ [TBD] * ☐ Alpha ☐ [ ] ☐ [ ] ☒ [3] ** ☐ [ ] ☐ [ ] ☒ 4’ x 5’ Marker Beta ☐ [ ] ☐ [ ] ☒ [2] ** ☐ [ ] ☐ [ ] ☐ Gamma ☐ [ ] ☐ [ ] ☒ [3] ** ☐ [ ] ☐ [ ] ☒ 4’ x 12’ Marker NOTE: The table represents either the signage/barriers installed / removed OR items required by the market (if mitigation is not installed by consultant/vendor). * These RF signs should be posted on any Access Point to the Main Roof. (See drawing in Section 5.2) ** These RF signs should be posted on the Marker and at the Back of all sectors. (See drawing in Section 5.2) Specialty Sign Detail Location N/A Access Point N/A Alpha N/A Beta N/A Gamma N/A NOTE: The tables above represent EXISTING compliance items implemented at this location. Notes/ Additional Compliance Requirements(s): Mitigation is required per the Signage/ Barrier Diagram. RF Safety Plan Table 3: Mitigation Requirements for Compliance Page 28 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 5.2 Signage/ Barrier Diagram Page 29 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 6 Conclusions and Recommendations:  The results of the analysis indicate that power density levels in the generally accessible areas on the Upper Roof level will exceed the FCC’s MPE limit for General Population and Occupational environments.  The results of the analysis indicate that power density levels in the generally accessible areas on the Main Roof level will exceed the FCC’s MPE limit for General Population and Occupational environments.  The results of the analysis indicate that power density levels in the generally accessible areas on the Balcony level will not exceed the FCC’s MPE limit for General Population environments.  The results of the analysis indicate that power density levels in the generally accessible areas on the Ground level will not exceed the FCC’s MPE limit for General Population environments.  The max theoretical % MPE is 2719.41% (FCC General Public) directly in front of the antenna beams at the Main Roof Level.  NOC and Guidelines Signs need to be posted on any Access Point to the Main Roof.  This site will be operating in general compliance with FCC OET Bulletin 65 and Dish Wireless ’s signage policy as the mitigation requirements outlined in the Executive Summary are implemented. See Signage/Barrier Diagram section for further details on the recommended signage placement locations. Note: Modifications to the site; and/or increases in channel counts or power levels exceeding those listed in this report will require additional evaluation to determine compliance. Page 30 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 7 Appendix A: FCC Compliance and RF Safety Policies In August of 1997, the FCC published OET Bulletin 65 Edition 97-01 to regulate methods for evaluating compliance with FCC guidelines for human exposure to radiofrequency (RF) electromagnetic fields. The FCC guidelines for human exposure to RF electromagnetic fields incorporate two categories of limits; namely “Controlled” (a.k.a. Occupational) and “Uncontrolled” (a.k.a. General Public). The guidelines offer suggested methods for evaluating fixed RF transmitters to ensure that the controlled and uncontrolled limits deemed safe by the FC for human exposure are not exceeded. OET Bulletin 65 recommended guidelines are intended to allow an applicant to “make a reasonably quick determination as to whether a proposed facility is in compliance with the limits.” In addition, the guidelines offer alternate supplementary considerations and procedures such as field measurements and more detailed analysis that should be used for multiple emitter situations. These guidelines define RF as emissions in the frequency range of 300 kHz to 100 GHz. The FCC define Maximum Permissible Exposure (MPE) limits within this frequency range based on limits recommended by the National Council on Radiation Protection and Measurement, the Institute of Electrical and Electronics Engineers (IEEE), and by the American National Standards Institute (ANSI). As shown in Table 1 of Appendix A, the averaging time for Occupational/Controlled exposures is 6 minutes, while the averaging time for general population/uncontrolled exposures is 30 minutes. As an illustration of the application of time-averaging to Occupational/Controlled exposure consider the following. The relevant interval for time-averaging for Occupational/Controlled exposures is six minutes. This means, for example, that during any given six-minute period a worker could be exposed to two times the applicable power density limit for three minutes as long as he or she were not exposed at all for the preceding or following three minutes. Similarly, a worker could be exposed at three times the limit for two minutes as long as no exposure occurs during the preceding or subsequent four minutes, and so forth. Page 31 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 The specific MPE limits defined by the FCC are as follows: Frequency Range [MHz] Electric Field Strength (E) [V/m] Magnetic Field Strength (H) [A/m] Power Density (S) [mW/Cm^2] Averaging Time |E|^2, |H|^2 or S [minutes] 0.3 - 3.0 614 1.63 100* 6 3.0 - 30 1842/f 4.89/f 900/f^2* 6 30 - 300 61.4 0.163 1 6 300 - 1,500 - - f/300 6 1,500 - 100,000 --5 6 Frequency Range [MHz] Electric Field Strength (E) [V/m] Magnetic Field Strength (H) [A/m] Power Density (S) [mW/Cm^2] Averaging Time |E|^2, |H|^2 or S [minutes] 0.3 - 3.0 614 1.63 100* 30 3.0 - 30 842/f 2.19/f 180/f^2* 30 30 - 300 27.5 0.073 0.2 30 300 - 1,500 - - f/1500 30 1,500 - 100,000 --1 30 f = frequency *Plane-wave equivalent power density Limits for Occupational/Controlled Exposure Limits for General Population/Uncontrolled Exposure Table 1: The specific MPE limits defined by the FCC The FCC states that “Occupational/ Controlled limits apply in situations in which persons are exposed as a consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. Limits for Occupational/ Controlled exposure also apply in situations when an individual is transient through a location where Occupational/ Controlled limits apply provided he or she is made aware of the potential for exposure.” For General Population/ Uncontrolled limits, the FCC states that “General Population/ Uncontrolled exposures apply in situations in which the general public may be exposed, or in which persons that are exposed as a consequence of their employment may not fully be aware of the potential for exposure or cannot exercise control over their exposure.” For purposes of this analysis, all limits are evaluated against the Power Density limits. Typical guidelines for determining whether Occupational/ Controlled limits can be applied include ensuring the environment (such as a rooftop) as limited/controlled access via locked doors or physical barrier that are preferably controlled by a landlord that is aware of the situation and can inform anyone going through the locked door of the existence of the RF emissions. Such notification/awareness is typically accomplished by means of signage on the door, or other access to the area of concern, as well as signage on or near the antennas. Examples of such signs include the following: Page 32 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Standards for when to use each of the above signs are as follows: All MPE references are to the FCC Public limits. All MPE references are to the FCC Occupational limits No sign required: <100% of Public Limit MPE Blue Sign, Notice: 100% to <500% of Public Limit MPE Yellow Sign, Caution: 500% to <5000% of Public Limit MPE Red Sign, Warning: ≥5000% of Public Limit MPE No sign required: <20% of Occupational MPE Blue Sign, Notice: 20% to <100% of MPE Yellow Sign, Caution: 100% to <1000% of MPE Red Sign, Warning: ≥1000% of MPE Page 33 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 8 Appendix B: Overview of RoofMaster Functions and Assumptions RoofMaster is a RF Compliance software package designed to enable the analysis, assessment and mitigation of communications sites with respect to human exposure to radiofrequency electromagnetic fields. RoofMaster was developed in 2008 by Waterford Consultants to support compliance assessments performed at single and multi-operator wireless locations throughout North America and has been in service since 2008. Real-world experience in evaluating thousands of base station installations are reflected in the RoofMaster design approach. This document provides a guide for creating simulations of RF hazard conditions through the characterization of antenna systems and site features and through FCC-specified computational analysis. On any structure, one may encounter antennas installed by wireless service providers, public safety and other FCC-licensed and unlicensed operators. Siting constraints have resulted in diverse and complex environments accessible to people performing a variety of activities around these antennas. RoofMaster supports the characterization of these locations to convey important information regarding RF sources and accessible areas necessary to evaluate the potential for human exposure to hazardous levels of RF energy. RoofMaster supports the depiction of communications sites through the display of construction drawing or aerial photography image files as well as providing line drawing tools. These representations are scalable to enable the modeling of any location. RoofMaster utilizes a three-dimensional spatial framework consisting of a 1000 x 1000 grid with unlimited vertical dimensions necessary for the positioning of antennas and modeling of RF conditions at each grid point throughout the space. Predictive analysis is performed on a study plane at a specified elevation. The subsequent sections of this guide provide the steps necessary to create a site representation and conduct these studies. RoofMaster employs several power density prediction models based on the computational approaches set forth in the Federal Communications Commission’s Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, OET Bulletin 65. This guideline utilizes several antenna and operational parameters in calculating the power density contributions from each emitter at specified points throughout the study space. RoofMaster enables antennas to be fully defined in site specific aspects as well as through the use of a library of manufacturer data. The parameters include: Page 34 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 § Antenna model § Radiation patterns § Aperture length § Gain § Beamwidth § Antenna radiation center § Azimuth § Mechanical downtilt § Location § Frequency § Power into antenna In OET-65, the Cylindrical Model is presented as an approach to determine the spatially averaged power density in the near field directly in front of an antenna. In order to implement this model in all directions, RoofMaster utilizes the antenna manufacturer horizontal pattern data. Additionally, RoofMaster incorporates factors that reduce the power density by the inverse square of horizontal and vertical distance beyond the near field region. Power density is calculated as follows:  S is the spatially averaged power density value  R is the horizontal distance meters to the study point  h is the aperture length in meters  Pin is power into the antenna input port in Watts RoofMaster Implementation:  GH is gain offset to study point as specified in manufacturer horizontal pattern  Pin is adjusted by the portion of the antenna aperture in the 0-6 ft vertical study zone  Hr accounts for 1/R2 Far Field roll off which starts at 2*h  Vr accounts for 1/ (vertical distance) 2 roll off from antenna bottom to the top of the 0-6ft study zone (or antenna top to bottom of 0-6ft study zone) Page 35 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 Not to Scale Page 36 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 9 References FCC (1997). “Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields”; Federal Communications Commission; Office of Engineering and Technology, OET Bulletin 65, Edition 97-01, August. Waterford Consultants, LLC. (2008). RoofMaster User Guide, Waterford Consultants, LLC. Page 37 of 37 Pramira, Inc · 2552 Walnut Ave., Suite 200, Tustin, CA 92780 · 800.678.1169 10 Limited Warranty Pramira, Inc. warrants that this analysis was performed in good faith using the methodologies and assumptions covered in this report and that data used for the analysis and report were obtained by Pramira, Inc. employees or representatives via site surveys or research of Dish Wireless ’s available information. In the event that specific third-party details were not available, best efforts were made to use assumptions that are based on industry experience of various carriers’ standards without violating any confidential information obtained under non-disclosure terms. Pramira, Inc. also warrants that this analysis was performed in accordance with industry acceptable standards and methods. There are no other warranties, express or implied, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose, relating to this agreement or to the services rendered by Pramira hereunder. In no event shall Pramira be held liable to Dish Wireless, or to any third party, for any indirect, special, incidental, or consequential damages, including but not limited to loss of profits, loss of data, loss of good will, and increased expenses. In no event shall Pramira be liable to Dish Wireless for damages, whether based in contract, tort, negligence, strict liability, or otherwise, exceeding the amount payable hereunder for the services giving rise to such liability.