Purpose of Experiment

0549-EX-CN-2017 Text Documents

Row 44, Inc.

2017-07-10ELS_194915

Attachment 1 Purpose of Experiment Row 44, Inc. (“Row 44”)1 hereby seeks authorization for the experimental operation of a new Ka Band antenna. Row 44 is proposing to operate within the 29.25-30.0 GHz Ka uplink band and the 18.3-18.8, 18.8-19.3, and 19.7-20.2 GHz downlink bands using the QEST Q09000 Ka-Band Horn-Array-Aperture Antenna. (See Table 1 for details.) The QEST Q09000 Antenna’s transmit gain is 33.4 dBi nominal, at 29.0 GHz; the receive gain 35.5 dBi nominal, at 19.2 GHz. (See Table 2 for details.) It operates in either a Left-Hand or Right-Hand Circular Polarization mode. The QEST Q09000 incorporates independent, linear-polarized array antennas compliant with the off-axis antenna envelope established in Section 25.209(a)(3) of the Commission’s Rules. The Q09000’s aperture has dimensions: D = 0.617 meters; H = 0.161 meters, and a surface area A = 0.099 m^2. The proposed transmit bandwidth, EIRP density, and skew relationships for the QEST Q09000 in the 29.25 to 30.0 GHz band are indicated in Table 3. The associated maximum input power flux density at the antenna flange will be 12.9 dBW/MHz. The antenna’s emissions, as radiated under the conditions of skew angle up to 60 degrees, will not exceed the uplink off-axis EIRP density mask of 25.138(a)(1), applicable to those tangent to the Geostationary Arc. The Ka Antenna, as designed for installation on an aircraft fuselage, exhibits an aperture which is dimensionally- restricted, so as to minimize aerodynamic drag. Due to these limitations, the antenna’s elevation pattern is wider than its azimuth, thereby complying with the gain limits of 25.209(a)(3) (tangent to the GSO arc), 25.209(b)(3) (cross-pol), but exhibiting limited compliance with 25.209(a)(6) (perpendicular to the GSO arc). (See the included Ka Antenna gain plots.) In its functions, the Ka transmitter will adjust the transmit signal level applied to the antenna flange based on the skew angle to the satellite. In the unlikely event the antenna’s pointing-direction is predicted to deviate from the target satellite, such that the EIRP Density limits of 25.138 would be violated, the Row 44 System will pre-emptively mute the transmitter, and will continue doing so only until unmuting of the transmitter would result in emissions compliant with the applicable 25.138 limits. The Row 44 ESAA antennas will be installed and operated in accordance with the above conditions and/or any other operational requirements specified in the Experimental FCC Authorization proposed to be granted to Row 44. If the use of this Ka Antenna should cause unacceptable interference into other systems, Row 44 will terminate transmissions immediately upon notice from Hughes, the FCC, or any other affected parties. 1 Row 44, Inc. is the FCC-licensee entity authorized to operate an Earth Stations Aboard Aircraft (“ESAA”) network in the Ku-band. The service is operated under the name of Row 44’s parent company, Global Eagle Entertainment. For consistency, the licensee entity name, Row 44, is used throughout this document.

Table 1 – Ka Antenna General Characteristics Antenna Make QEST Q09000 Antenna Type Horn Array Aperture Width / Height / Area 0.617 m / 0.161 m / 0.099 m^2 RX Frequency Range 18.3 – 20.2 GHz RX Gain, beam-center 34.4 – 35.9 dBi TX Frequency Range 28.3 – 30.0 GHz TX Gain, beam-center 33.0 – 33.7 dBi TX Beamwidth, Azimuth (-3 dB) 1.0 Degree TX Beamwidth, Elevation (-3 dB) 3.4 Degrees Polarization LHCP, RHCP Table 2 - Ka Antenna Transmit Gain vs. Frequency, Applicable to Echostar 19 / Jupiter 2 Inroute Frequencies Frequency (GHz) Antenna Gain (dBi) Minimum Added Losses (dB) 29.0 33.4 1.5 29.5 33.7 1.5 30.0 33.7 1.5 Table 3 – Proposed Operational TX Bandwidths and EIRP Density Limits based on Skew Angle 1.024 MHz 2.048 MHz 4.096 MHz Skew Range Bandwidth Bandwidth Bandwidth 40.9 dBW/MHz 40.9 dBW/MHz 39.8 dBW/MHz 0, 5 Degrees 43.2 dBW/MHz 42.8 dBW/MHz 39.8 dBW/MHz 10, 15, 20, 60 Degrees 45.8 dBW/MHz 42.8 dBW/MHz 39.8 dBW/MHz 25 - 55 Degrees

Attachment 2 Co-Polarized EIRP Density Plots The following pages collectively-depict the EIRP Density plots for each of 29.0 and 30.0 GHz, for both LHP and RHP, for skew angles over the range 0 to 60 degrees. 25.138 EIRP Density limits for both nominal and 10% of sidelobes are referenced. (Please note that since the Ka Antenna is of a Horn-Array-Aperture design exhibiting no back-lobes, the data is limited to the -90 to +90 degree range.)

Figure 1 – EIRP Density tangent to GSO Arc, 29.0 GHz, LHP, 40.9 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 2 – EIRP Density tangent to GSO Arc, 29.0 GHz, LHP, 40.9 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 3 – EIRP Density tangent to GSO Arc, 29.0 GHz, RHP, 40.9 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 4 – EIRP Density tangent to GSO Arc, 29.0 GHz, RHP, 40.9 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 5 – EIRP Density tangent to GSO Arc, 30.0 GHz, LHP, 40.9 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 6 – EIRP Density tangent to GSO Arc, 30.0 GHz, LHP, 40.9 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 7 – EIRP Density tangent to GSO Arc, 30.0 GHz, RHP, 40.9 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 8 – EIRP Density tangent to GSO Arc, 30.0 GHz, RHP, 40.9 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 9 – EIRP Density tangent to GSO Arc, 29.0 GHz, LHP, 43.2 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 10 – EIRP Density tangent to GSO Arc, 29.0 GHz, LHP, 43.2 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 11 – EIRP Density tangent to GSO Arc, 29.0 GHz, RHP, 43.2 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 12 – EIRP Density tangent to GSO Arc, 29.0 GHz, RHP, 43.2 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 13 – EIRP Density tangent to GSO Arc, 30.0 GHz, LHP, 43.2 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 14 – EIRP Density tangent to GSO Arc, 30.0 GHz, LHP, 43.2 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 15 – EIRP Density tangent to GSO Arc, 30.0 GHz, RHP, 43.2 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 16 – EIRP Density tangent to GSO Arc, 30.0 GHz, RHP, 43.2 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 17 – EIRP Density tangent to GSO Arc, 29.0 GHz, LHP, 45.8 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 18 – EIRP Density tangent to GSO Arc, 29.0 GHz, LHP, 45.8 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 19 – EIRP Density tangent to GSO Arc, 29.0 GHz, RHP, 45.8 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 20 – EIRP Density tangent to GSO Arc, 29.0 GHz, RHP, 45.8 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 21 – EIRP Density tangent to GSO Arc, 30.0 GHz, LHP, 45.8 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 22 – EIRP Density tangent to GSO Arc, 30.0 GHz, LHP, 45.8 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Figure 23 – EIRP Density tangent to GSO Arc, 30.0 GHz, RHP, 45.8 dBW/MHz, -10 to +10 deg., 25.138(a)(1) limits Figure 24 – EIRP Density tangent to GSO Arc, 30.0 GHz, RHP, 45.8 dBW/MHz, -90 to +90 deg., 25.138(a)(1) limits

Attachment 3 Cross-Polarized EIRP Density Plots The following pages depict the cross-polarized EIRP Density plots for each of 29.0 and 30.0 GHz, for both LHP and RHP, for skew angles over the range 0 to 60 degrees. The 25.138(a)(4) EIRP Density limits are referenced. (Please note that since the Ka Antenna is of a Horn-Array-Aperture design exhibiting no back-lobes, the data is limited to the -90 to +90 degree range.)

Figure 25 – X-Pol EIRP Density tangent to GSO Arc, 29.0 GHz, LHP, 40.9 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits Figure 26 – X-Pol EIRP Density tangent to GSO Arc, 29.0 GHz, RHP, 40.9 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits

Figure 27 – X-Pol EIRP Density tangent to GSO Arc, 30.0 GHz, LHP, 40.9 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits Figure 28 – X-Pol EIRP Density tangent to GSO Arc, 30.0 GHz, RHP, 40.9 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits

Figure 29 – X-Pol EIRP Density tangent to GSO Arc, 29.0 GHz, LHP, 43.2 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits Figure 30 – X-Pol EIRP Density tangent to GSO Arc, 29.0 GHz, RHP, 43.2 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits

Figure 31 – X-Pol EIRP Density tangent to GSO Arc, 30.0 GHz, LHP, 43.2 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits Figure 32 – X-Pol EIRP Density tangent to GSO Arc, 30.0 GHz, RHP, 43.2 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits

Figure 33 – X-Pol EIRP Density tangent to GSO Arc, 29.0 GHz, LHP, 45.8 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits Figure 34 – X-Pol EIRP Density tangent to GSO Arc, 29.0 GHz, RHP, 45.8 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits

Figure 35 – X-Pol EIRP Density tangent to GSO Arc, 30.0 GHz, LHP, 45.8 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits Figure 36 – X-Pol EIRP Density tangent to GSO Arc, 30.0 GHz, RHP, 45.8 dBW/MHz, -10 to +10 deg., 25.138(a)(4) limits

Attachment 4 Ka Antenna Gain Plots (Tangent to GSO Arc, Perpendicular to GSO Arc, Co-Pol) The following pages depict the Ka Antenna gain plots for 29.0 MHz, for both LHP and RHP, for skew angles over the range 0 to 60 degrees, applicable to (1) Tangent to the GSO arc, (2) Perpendicular to the GSO arc, and (3) Tangent cross- polarized gain. (Please note that since the Ka Antenna is of a Horn-Array-Aperture design exhibiting no back-lobes, the data is limited to the -90 to +90 degree range.)

Figure 37 – Ka Antenna Gain Tangent to GSO Arc, 29.0 GHz, LHP, -10 to +10 degrees, 25.209(a)(3) limits Figure 38 – Ka Antenna Gain Tangent to GSO Arc, 29.0 GHz, LHP, -90 to +90 degrees, 25.209(a)(3) limits

Figure 39 – Ka Antenna Gain Tangent to GSO Arc, 29.0 GHz, RHP, -10 to +10 degrees, 25.209(a)(3) limits Figure 40 – Ka Antenna Gain Tangent to GSO Arc, 29.0 GHz, RHP, -90 to +90 degrees, 25.209(a)(3) limits

Figure 41 – Ka Antenna Gain Perpendicular to GSO Arc, 29.0 GHz, LHP, -50 to +50 degrees, 25.209(a)(6) limits Figure 42 – Ka Antenna Gain Perpendicular to GSO Arc, 29.0 GHz, RHP, -50 to +50 degrees, 25.209(a)(6) limits

Figure 43 – X-Pol Ka Antenna Gain Along GSO Arc, 29.0 GHz, LHP, -10 to +10 degrees, 25.209(b)(3) limits Figure 44 – X-Pol Ka Antenna Gain Along GSO Arc, 29.0 GHz, RHP, -10 to +10 degrees, 25.209(b)(3) limits

Attachment 5 Sample Link Budget The following pages provide a sample link budget using satellite (97.1 degrees WL) Echostar 19 / Jupiter 2’s U 068 beam*, for an aircraft located in Washington DC. (* The associated Hughes Gateway being located in San Diego)

Page 1 Inroute Signal: QPSK 1/2 Uplink Frequency (MHz): 29500 Ka Antenna Link Budget Downlink Frequency (MHz): 20200 Baseband BW (MHz): 1.024 Spread BW (MHz): 1.024 Link Budget for satellite Jupiter 2 at -97.0 degrees Required C/N (dB): 3.5 Skew operational limit: 25 degrees Outroute Signal: QPSK 1/2 Uplink Frequency (MHz): 29500 Downlink Frequency (MHz): 20200 Inroute signal: QPSK 1/2 rate 1.024 Msps in bandwidth 1.024 MHz Bandwidth (MHz): 30 Outroute signal: QPSK 1/2 rate 30 Msps in bandwidth 30 MHz Required C/N (dB): 2.1 Lat Long Satellite: Jupiter 2 Remote: Dulles 38.953 -77.448 Longitude (deg East): -97 NOC: San Diego 32.896 -117.202 Maximum Saturated Downlink EIRP (dBW): 50 Mispoint/ Intermod/ G/T towards Remote (dB/K): 6.00 Rain/ Satellite/ G/T towards NOC (dB/K): 6.00 Atmospheric Cross-pol G/T Degradation (dB): 0 Inroute Path: Ideal Link Losses Interference Saturation Flux Density (dBW/m^2): -87 Attenuation Setting (dB): 8 EIRP towards satellite (dBW) 46.20 45.20 45.20 Saturated EIRP towards NOC (dBW): 50 Uplink Path Loss (dB) 213.40 213.40 213.40 Saturated EIRP towards Remote (dBW): 50 Spreading Loss (dB) -162.53 -162.53 -162.53 Max Authorized Downlink EIRP (dBw/Hz): -20 Flux Density at Satellite (dBW/m^2) -116.33 -117.33 -117.33 Downlink EIRP backoff (dB): unnecessary Uplink C/T (dB) -161.20 -162.20 -162.20 Adjusted Outroute EIRP to Remote (dBW): 50.00 C/No (dB) 67.40 66.40 66.40 Downlink EIRP Density to Remote (dBW/Hz): -24.77 Noise BW (dB-Hz) 60.10 60.10 60.10 Downlink EIRP Inroute (dBW): 16.67 Interference (dB) N/A N/A -14.87 Uplink C/N (dB) 7.30 6.30 5.73 Remote: Dulles Satellite downlink EIRP (dBW) 18.67 16.67 16.67 Latitude (deg North): 38.953 Downlink Path Loss (dB) 210.02 210.02 210.02 Longitude (deg East): -77.448 Downlink C/T (dB) -155.85 -157.85 -157.85 TX Antenna Gain (dBi): 33.70 C/No (dB) 72.75 70.75 70.75 TX Power (dBm): 44 Noise BW (dB-Hz) 60.10 60.10 60.10 TX Backoff (dB): 0 Interference (dB) N/A N/A -18.19 Power into flange w losses (dBW/MHz): 12.90 Downlink C/N (dB) 12.65 10.65 9.94 Unimpaired EIRP Density (dBW/MHz) 46.10 RX G/T (dB/K): 13.50 Antenna Mispoint (dB): 0.5 Cumulative C/N (dB) 6.19 4.94 4.34 Rain Attenuation (dB): 0 Necessary C/N (dB) 3.50 3.50 3.50 Atmospheric Attenuation (dB): 0.5 Cumulative Inroute Link Margin (dB) 2.69 1.44 0.84

Inroute Uplink Interference Page 2 Adjacent Channel Uplink (dB): -30.0 Adjacent Satellite Uplink (dB): -19.7 Ka Antenna Link Budget Cross-Pol Uplink (dB): -19.7 Intermod Uplink (dB): -20.0 Cumulative Interf. Uplink (dB): -14.87 Link Budget for satellite Jupiter 2 at -97.0 degrees Outroute Downlink Interference Skew operational limit: 25 degrees Adjacent Channel Downlink (dB): -30.0 Adjacent Satellite Downlink (dB): -10.0 Cross-Pol Downlink (dB): -20.0 Mispoint/ Intermod/ Intermod Downlink (dB): -20.0 Rain/ Satellite/ Cumulative Interf. Downlink (dB): -9.17 Atmospheric Cross-pol Outroute Path: Ideal Link Losses Interference NOC: San Diego Latitude (deg North): 32.896 EIRP towards satellite (dBW) 77.44 76.44 76.44 Longitude (deg East): -117.202 Uplink Path Loss (dB) 213.31 213.31 213.31 Antennna diameter (m): 5.8 m Spreading Loss (dB) -162.44 -162.44 -162.44 RX Antenna Gain (dBi): 53 Flux Density at Satellite (dBW/m^2) -85.00 -86.00 -86.00 Antenna Noise Temp (K): 56 Uplink C/T (dB) -129.87 -130.87 -130.87 Antenna LNA Temp (K): 70 C/No (dB) 98.73 97.73 97.73 Total Noise Temp (K): 126 Noise BW (dB-Hz) 74.77 74.77 74.77 Antenna G/T (dB/K): 35.50 Interference (dB) N/A N/A -18.86 TX Antenna Gain (dBi): 56.5 Uplink C/N (dB) 23.96 22.96 17.43 Conducted TX Power to Antenna (dBW): 20.94 TX backoff (dB): unnecessary Satellite downlink EIRP (dBW) 50.00 49.00 49.00 Power into flange (dBW/ MHz): 6.17 Downlink Path Loss (dB) 210.11 210.11 210.11 Antenna mis-point (dB): 0.5 Downlink C/T (dB) -146.61 -148.61 -148.61 Rain Attenuation (dB): 0 C/No (dB) 7.22 5.22 5.22 Atmospheric Attenuation (dB): 0.5 Noise BW (dB-Hz) 74.77 74.77 74.77 Interference (dB) N/A N/A -9.17 Inroute Downlink Interference Downlink C/N (dB) 7.22 5.22 3.75 Adjacent Channel Downlink (dB): -30.0 Adjacent Satellite Downlink (dB): -25.0 Cross-Pol Downlink (dB): -20.0 Cumulative C/N (dB) 7.13 5.15 3.57 Intermod Downlink (dB): -30.0 Necessary C/N (dB) 2.1 2.1 2.1 Cumulative Interf. Downlink (dB): -18.19 Cumulative Outroute Link Margin (dB) 5.03 3.05 1.47 Outroute Uplink Interference Adjacent Channel Uplink (dB): -30.0 Adjacent Satellite Uplink (dB): -30.0 Cross-Pol Uplink (dB): -20.0 Intermod Uplink (dB): -30.0 Cumulative Interf. Uplink (dB): -18.86

Attachment 6 Echostar 19 / Jupiter 2 Coverage Area Depiction The following page provides a depiction of the CONUS Echostar 19 / Jupiter 2 coverage area applicable to the Row 44 Ka Antenna.

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Attachment 7 Echostar 19 / Jupiter 2 Gateway Call Locations and Signs Row 44 proposes to communicate using the existing gateway earth stations set forth in the chart below, all of which are currently licensed to HNS License Sub, LLC (Hughes) by the International Bureau, under the call signs listed. Call Sign Location E150076 Gilbert AZ E150077 Cheyenne WY E150078 Duluth MN E150079 Roseburg OR E150080 North Platte NE E150081 Seattle WA E150082 Bismarck ND E150083 Amarillo TX E150084 Albuquerque NM E150085 Bellevue NE E150086 Lindon UT E150087 Santa Clara CA E150088 San Diego CA E150089 North Las Vegas NV E150090 Boise ID E150091 Missoula MT E150092 Billings MT

Attachment 8 Radiation Hazard Analysis – Ka Antenna Introduction This exhibit constitutes the Radiation Hazard Analysis for Row 44’s Ka transmitter considering the FCC procedure outlined in FCC Bulletin #65. The limit for exposure to RF energy, (frequencies greater than 1.5 GHz), is 5 mW/cm2 up to a 6 minute duration (categorized as Occupational / ’Controlled Exposure’), and 1 mW/cm2 up to a 30 minute duration (categorized as General Population / ‘Uncontrolled Exposure’).1 Analysis regarding radiation exposure is presented considering behavior in the Near Field, Far Field and Transition ‘regions’. Appropriate separation-distances are provided for the ‘Controlled’ and ‘Uncontrolled Exposure’ scenarios, considering individuals located in the direction of either the antenna’s main beam or its side-lobes. Analysis The extent of the Near Field region in the main beam is defined as distances out to a radius Rnf according to the relation Rnf = D2/4 where D is the antenna panel width and  is the transmit wavelength. The Near Field maximum Power Density, Snf, is determined from Snf = 0.1 PPA/A (in mW/cm2) where PPA is the transmit power (after cable losses), A is the surface area of the antenna aperture, and  the efficiency of the antenna aperture. (With an antenna height h, the surface area A = Dh.) The Far Field region for the main beam is defined as beginning and continuing out-from a radius Rff , given by Rff = 0.60 D2/  1 “Questions and Answers about Biological Effects and Potential Hazards of Radiofrequency Electromagnetic Fields,” Federal Communications Commission, Office of Engineering and Technology, Bulletin 65, Fourth Edition, August, 1999, p.15. http://www.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet56/oet56e4.pdf 1

The Far Field Power Density Sff at the Far Field radius and farther is determined (in terms of the EIRP, denoted by PEIRP) from Sff = PEIRP/4 Rff2 (in mW/cm2) (The value of PEIRP should already consider coax losses and aperture efficiency.) Note that when the radius is expressed in meters, the Power Density is in units of W/m2. The results are converted to units consistent with the FCC limits (mW/cm2) by multiplying values in W/m2 by 0.1. Exposure from the Main Antenna Beam Row 44’s antenna has dimensions D = 0.617 m, h = 0.161 m, and a surface area A = 0.099 m2. At the highest transmit frequency of 30.0 GHz, the wavelength is 0.010 m. The Near Field radius is then Rnf = 9.52 m The antenna aperture efficiency factor is 0.64 and the total added losses are 6.80 dB. Based on the wavelength and panel-width given farther above, the Far Field radius is then Rff = 22.84 m In the operation of Row 44’s system, the antenna may be driven with various TX signal levels, as regulatorily-authorized, based on the prevailing value of antenna skew. Starting from the Ka maximum TX power of 44 dBm, and working-down in 0.5 dB increments, Tables 1 provides the associated Near Field radius Power Density values: Table 1 Transmit Power and Near Field Power Density at Distance Rnf Transmit power (dBm) EIRP (dBW) Snf (mW/cm2) 44 46.2 11.495 43.5 45.7 10.245 43 45.2 9.130 42.5 44.7 8.138 42 44.2 7.253 41.5 43.7 6.464 41 43.2 5.761 40.5 42.7 5.134 40 42.2 4.576 39.5 41.7 4.078 39 41.2 3.635 38.5 40.7 3.240 38 40.2 2.887 37.5 39.7 2.573 37 39.2 2.293 36.5 38.7 2.044 36 38.2 1.822 2

35.5 37.7 1.624 35 37.2 1.447 34.5 36.7 1.290 34 36.2 1.149 33.5 35.7 1.024 (Note that the equation for the maximum Power Density in the Near Field considers a given radiated signal/ power confined-to and passing-through a physical area corresponding to that of the antenna aperture. Along these lines, the Snf values cannot be assumed to vary with distance from the antenna, for locations within the Near Field.) The associated Far Field radius Power Density values are provided in Table 2: Table 2 Transmit Power, EIRP and Far Field Power Density at Distance Rff Transmit power (dBm) EIRP (dBW) Sff (mW/cm2) 44 46.2 0.6358 43.5 45.7 0.5667 43 45.2 0.5051 42.5 44.7 0.4501 42 44.2 0.4012 41.5 43.7 0.3576 41 43.2 0.3187 40.5 42.7 0.2840 40 42.2 0.2531 39.5 41.7 0.2256 39 41.2 0.2011 38.5 40.7 0.1792 38 40.2 0.1597 37.5 39.7 0.1423 37 39.2 0.1269 36.5 38.7 0.1131 36 38.2 0.1008 35.5 37.7 0.0898 35 37.2 0.0800 34.5 36.7 0.0713 34 36.2 0.0636 33.5 35.7 0.0567 We are considering exposure to two values of Power Density: 5 mW/cm2 and 1 mW/cm2. 5 mW/cm2 Analysis Some of the Snf values in Table 1 are greater than 5 mW/cm2, and some are less than 5 mW/cm2. As the Near Field analysis assumes that the Power Density in the Near Field does not vary with distance, for cases where Snf exceeds 5 mW/cm2, there is no location in the Near Field where the Power Density is less. An individual therefore cannot be located in the Near Field anywhere whatsoever at all to avoid such an exposure level. Assuming that the Power Density decreases linearly between the Near Field radius and the Far Field radius, the distances at which the Power Density will equal 5 mW/cm2 are given in Table 3. For cases where the ‘apparent’ distance where 5 mW/cm^2 is 3

encountered would be closer than Rnf, the value of Rnf itself is adopted as a precautionary measure. Table 3 Separation for ‘Controlled Exposure’ Limit (Main Beam) Transmit power (dBm) Separation for ‘Controlled’ Limit (5 mW/cm2) meters feet 44 17.49 57.37 43.5 16.74 54.91 43 15.90 52.16 42.5 14.96 49.07 42 13.90 45.60 41.5 12.71 41.70 41 11.38 37.34 40.5 9.89 32.44 40 9.52 31.22 39.5 9.52 31.22 39 9.52 31.22 38.5 9.52 31.22 38 9.52 31.22 37.5 9.52 31.22 37 9.52 31.22 36.5 9.52 31.22 36 9.52 31.22 35.5 9.52 31.22 35 9.52 31.22 34.5 9.52 31.22 34 9.52 31.22 33.5 9.52 31.22 1 mW/cm2 Analysis As the Snf values are each greater than 1 mW/cm2, we need consider distances greater than Rnf where the 1 mW/cm2 will be encountered: The EIRP and the resulting Far Field Power Density at distance Rff are once again provided in Table 4 for each transmit power value: Table 4 Transmit Power, EIRP and Far Field Power Density at Distance Rff Transmit power (dBm) EIRP (dBW) Sff (mW/cm2) 44 46.2 0.6358 43.5 45.7 0.5667 43 45.2 0.5051 42.5 44.7 0.4501 42 44.2 0.4012 41.5 43.7 0.3576 41 43.2 0.3187 40.5 42.7 0.2840 40 42.2 0.2531 39.5 41.7 0.2256 39 41.2 0.2011 38.5 40.7 0.1792 38 40.2 0.1597 37.5 39.7 0.1423 37 39.2 0.1269 4

36.5 38.7 0.1131 36 38.2 0.1008 35.5 37.7 0.0898 35 37.2 0.0800 34.5 36.7 0.0713 34 36.2 0.0636 33.5 35.7 0.0567 Notice that no Sff values exceed 1 mW/cm2. For all the TX levels, we therefore need interpolate the Power Density values between Rnf and Rff to project the location at which 1 mW/cm2 exists. Assuming that the Power Density decreases linearly between the Near Field radius and the Far Field radius, the distances at which the Power Density equals 1 mW/cm2 are projected according to Table 5. Table 5 Separation for ‘Uncontrolled Exposure’ Limit (Main Beam) Transmit power (dBm) Separation for ‘Uncontrolled’ Limit (1 mW/cm2) meters feet 44 22.39 73.47 43.5 22.24 72.98 43 22.08 72.43 42.5 21.89 71.81 42 21.68 71.12 41.5 21.44 70.34 41 21.17 69.47 40.5 20.87 68.49 40 20.54 67.39 39.5 20.16 66.15 39 19.74 64.77 38.5 19.27 63.21 38 18.74 61.47 37.5 18.14 59.52 37 17.47 57.32 36.5 16.72 54.86 36 15.88 52.10 35.5 14.93 49.00 35 13.87 45.52 34.5 12.69 41.62 34 11.35 37.24 33.5 9.85 32.33 5

Exposure from Antenna Beam Side-Lobes The previous calculations assumed the individual was located in the ‘sight’ of the main antenna beam. (The ‘widest’ portion of the main antenna beam, i.e., in the elevation plane, is approximately 3.4 degrees.) The following analysis provides insight into the exposure when an individual is located to-the-side or behind the antenna. Table 6 provides Power Density values at distances Rnf and Rff when an individual is located in the direction of the highest-possible antenna side-lobe (which corresponds to a 20 dB gain reduction from the main beam). Table 6 TX Power, Sidelobe Attenuation, and Power Density at Rnf and Rff Tx power (dBm) Sidelobe (dB) Snf (mW/cm2) Sff (mW/cm2) 44 -20 0.1149 0.0064 43.5 -20 0.1024 0.0057 43 -20 0.0913 0.0051 42.5 -20 0.0814 0.0045 42 -20 0.0725 0.0040 41.5 -20 0.0646 0.0036 41 -20 0.0576 0.0032 40.5 -20 0.0513 0.0028 40 -20 0.0458 0.0025 39.5 -20 0.0408 0.0023 39 -20 0.0363 0.0020 38.5 -20 0.0324 0.0018 38 -20 0.0289 0.0016 37.5 -20 0.0257 0.0014 37 -20 0.0229 0.0013 36.5 -20 0.0204 0.0011 36 -20 0.0182 0.0010 35.5 -20 0.0162 0.0009 35 -20 0.0145 0.0008 34.5 -20 0.0129 0.0007 34 -20 0.0115 0.0006 33.5 -20 0.0102 0.0006 As is obvious, neither the Snf or Sff values (at distances Rnf and Rff) exceed even the ‘Uncontrolled’ Limit of 1 mW/cm2. Therefore, no minimum distance of separation will apply for individuals located in directions outside the antenna’s main beam. Summary This document presents the radiation hazard analysis for Row 44’s transmitter transmitting at various EIRP values between 46.2 and 35.7 dBW. Considering the worst- case (46.2 dBW), individuals positioned in the direction of the main beam of the antenna, and in a ‘Controlled Exposure’ environment should be at least 17.49 meters (57.37 feet) away from the antenna aperture (for a 6 minute duration). Under the same circumstances, individuals in an ‘Uncontrolled Exposure’ environment should be at least 22.39 meters (73.47 feet) away from the antenna aperture (for a 30 minute duration). For individuals located in directions which are outside the antenna’s main beam, no minimum distance of separation is applicable. 6


Document Created: 2017-06-22 15:23:21
Document Modified: 2017-06-22 15:23:21
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