Attachment Extension Request

This document pretains to SES-STA-20160607-00488 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2016060700488_1138070

STA Extension Request Hawaii Pacific Teleport (HPT) requests a second extension of the special temporary authority (“STA”) to operate a Ka-band earth station to provide in-orbit testing (“IOT”) services for a BIU mission. Pursuant to the authority in File Number SES-STA-20160323-00268, as extended by SES-STA-20160509-00404, HPT is providing IOT of the Nimiq-2 at 148° E.L. orbital location in the 29.5 – 30.0 GHz (Earth-to-space) frequency band. The testing involves 30-45 minute spectrum plots either once per day or once per week. Attached is an Exhibit 1 – Technical Exhibit (Schedule B of Form 312) – detailing the requested operating parameters and an Exhibit 2 – Radiation Hazard Report. {00921571-1 }

STA Request – Technical Exhibit B1. Location of Earth Station Site. B1a. Station Call Sign B1b. Site identifier (HUB, REMOTE1, etc.) B1c. Telephone Number B1j. Geographic Coordinates N/S, B1k. Lat./Lon. 917-750-5358 Deg. - Min. - Sec. - E/W Coordinates are: B1d. Mailing Street Address of Station or Area of Operation B1e. Name of Contact Person 91-340 Farrington Highway Leeana A. Smith-Ryland Lat. 21-20-09.0 N. NAD-83 Lon. 158-05-19.0 W. B1f. City B1g. County B1h. State B1i. Zip Code B1l. Site Elevation (AMSL) Kapolei Honolulu HI 96707 36.42 B2. Points of Communications: . Satellite Name and Orbit Location Nimiq-2 at 148°E / 212 W B3. Destination points for communications using non-U.S. licensed satellites. Satellite Name List of Destination Points Nimiq-2 at 148°E / 212 W Canada B4. Earth Station Antenna Facilities: Use additional pages as needed. (a) Site ID* (b) (c) (d) Manufacturer (e) Model (f) (g) Antenna Gain Antenna ID** Quantity Antenna Size Transmit and/or Receive (meters) (_____dBi at_____GHz) 49.5 @ 29.750 1.2M 1.2M 1 AVL 1.2M 1.2 B5. Antenna Heights and Maximum Power Limits: (The corresponding Antenna ID in tables B4 and B5 applies to the same antenna) Maximum Antenna Height (e) Building (f) Maximum (g) Total Input (a) (b) Antenna Structure (c) Above (d) Above Height Above Antenna Height Power at (h) Total EIRP Antenna Registration No. Ground Level Mean Sea Level Ground Level Above Rooftop antenna flange for all carriers ID** (meters) (meters) (meters)*** (meters)*** (Watts) (dBW) 1.2M 2.0 38.42 142* 71* *1 MHz spectrum plots at up to 20 center frequencies distributed across the aggregate 500 MHz uplink

B6. Frequency Coordination Limits: Use additional pages as needed. (a) (b) (c) Range of (d) Range of (e) Antenna (f) Antenna (g) Earth Station (h) Earth Station (i) Maximum EIRP Antenna ID* Frequency Limits Satellite Arc Satellite Arc Elevation Angle Elevation Angle Azimuth Angle Azimuth Angle Density toward the (MHz) Eastern Limit** Western Limit** Eastern Limit Western Limit Eastern Limit Western Limit Horizon (dBW/4kHz) 1.2M 29,500 – 30,000 212.0 212.0 25.4 25.4 255.1 255.1 -18.3 B7. Particulars of Operation (Full particulars are required for each r.f. carrier): Use additional pages as needed. (a) (b) (c) (d) Antenna (e) (f) Maximum (g) Maximum (h) Description of Modulation and Services Antenna ID* Frequency Limits T/R Polarization Emission EIRP per EIRP Density (MHz) Mode (H,V,L,R) Designator Carrier (dBW) per Carrier ** (dBW/4kHz) 1.2M 29,500 – 30,000 T H,V 1M00G7W 58.0 34.0 Digital traffic

Exhibit B Radiation Hazard Report Page 1 of 5 Analysis of Non-Ionizing Radiation for a 1.2-Meter Earth Station System This report analyzes the non-ionizing radiation levels for a 1.2-meter earth station system. The analysis and calculations performed in this report comply with the methods described in the FCC Office of Engineering and Technology Bulletin, No. 65 first published in 1985 and revised in 1997 in Edition 97-01. The radiation safety limits used in the analysis are in conformance with the FCC R&O 96-326. Bulletin No. 65 and the FCC R&O specifies that there are two separate tiers of exposure limits that are dependant on the situation in which the exposure takes place and/or the status of the individuals who are subject to the exposure. The Maximum Permissible Exposure (MPE) limits for persons in a General Population/Uncontrolled environment are shown in Table 1. The General Population/Uncontrolled MPE is a function of transmit frequency and is for an exposure period of thirty minutes or less. The MPE limits for persons in an Occupational/Controlled environment are shown in Table 2. The Occupational MPE is a function of transmit frequency and is for an exposure period of six minutes or less. The purpose of the analysis described in this report is to determine the power flux density levels of the earth station in the far-field, near-field, transition region, between the subreflector or feed and main reflector surface, at the main reflector surface, and between the antenna edge and the ground and to compare these levels to the specified MPEs. Table 1. Limits for General Population/Uncontrolled Exposure (MPE) Frequency Range (MHz) Power Density (mW/cm2) 30-300 0.2 300-1500 Frequency (MHz)*(0.8/1200) 1500-100,000 1.0 Table 2. Limits for Occupational/Controlled Exposure (MPE) Frequency Range (MHz) Power Density (mW/cm2) 30-300 1.0 300-1500 Frequency (MHz)*(4.0/1200) 1500-100,000 5.0 Table 3. Formulas and Parameters Used for Determining Power Flux Densities Parameter Symbol Formula Value Units Antenna Diameter D Input 1.2 m Antenna Surface Area Asurface π D2 / 4 1.13 m2 Feed Flange Diameter Dfa Input 9.1 cm Area of Feed Flange Afa π Dfa 2/4 65.04 cm2 Frequency F Input 29500 MHz Wavelength λ 300 / F 0.010169 m Transmit Power P Input 142.00 W Antenna Gain (dBi) Ges Input 49.5 dBi Antenna Gain (factor) G 10Ges/10 89125.1 n/a Pi π Constant 3.1415927 n/a Antenna Efficiency η Gλ2/(π2D2) 0.65 n/a

Exhibit B Radiation Hazard Report Page 2 of 5 1. Far Field Distance Calculation The distance to the beginning of the far field can be determined from the following equation: Distance to the Far Field Region Rff = 0.60 D2 / λ (1) = 85.0 m The maximum main beam power density in the far field can be determined from the following equation: On-Axis Power Density in the Far Field Sff = G P / (4 π Rff 2) (2) = 139.524 W/m2 = 13.952 mW/cm2 2. Near Field Calculation Power flux density is considered to be at a maximum value throughout the entire length of the defined Near Field region. The region is contained within a cylindrical volume having the same diameter as the antenna. Past the boundary of the Near Field region, the power density from the antenna decreases linearly with respect to increasing distance. The distance to the end of the Near Field can be determined from the following equation: Extent of the Near Field Rnf = D2 / (4 λ) (3) = 35.4 m The maximum power density in the Near Field can be determined from the following equation: Near Field Power Density Snf = 16.0 η P / (π D2) (4) = 325.711 W/m2 = 32.571 mW/cm2 3. Transition Region Calculation The Transition region is located between the Near and Far Field regions. The power density begins to decrease linearly with increasing distance in the Transition region. While the power density decreases inversely with distance in the Transition region, the power density decreases inversely with the square of the distance in the Far Field region. The maximum power density in the Transition region will not exceed that calculated for the Near Field region. The power density calculated in Section 1 is the highest power density the antenna can produce in any of the regions away from the antenna. The power density at a distance Rt can be determined from the following equation: Transition Region Power Density St = Snf Rnf / Rt (5) = 32.571 mW/cm2

Exhibit B Radiation Hazard Report Page 3 of 5 4. Region between the Feed Assembly and the Antenna Reflector Transmissions from the feed assembly are directed toward the antenna reflector surface, and are confined within a conical shape defined by the type of feed assembly. The most common feed assemblies are waveguide flanges, horns or subreflectors. The energy between the feed assembly and reflector surface can be calculated by determining the power density at the feed assembly surface. This can be determined from the following equation: Power Density at the Feed Flange Sfa = 4000 P / Afa (6) = 8733.245 mW/cm2 5. Main Reflector Region The power density in the main reflector is determined in the same manner as the power density at the feed assembly. The area is now the area of the reflector aperture and can be determined from the following equation: Power Density at the Reflector Surface Ssurface = 4 P / Asurface (7) = 502.222 W/m2 = 50.222 mW/cm2 6. Region between the Reflector and the Ground Assuming uniform illumination of the reflector surface, the power density between the antenna and the ground can be determined from the following equation: Power Density between Reflector and Ground Sg = P / Asurface (8) = 125.556 W/m2 = 12.556 mW/cm2

Exhibit B Radiation Hazard Report Page 4 of 5 7. Summary of Calculations Table 4. Summary of Expected Radiation levels for Uncontrolled Environment Calculated Maximum Radiation Power Density Level Region (mW/cm2) Hazard Assessment 1. Far Field (Rff = 85.0 m) Sff 13.952 Potential Hazard 2. Near Field (Rnf = 35.4 m) Snf 32.571 Potential Hazard 3. Transition Region (Rnf < Rt < Rff) St 32.571 Potential Hazard 4. Between Feed Assembly and Sfa 8733.245 Potential Hazard Antenna Reflector 5. Main Reflector Ssurface 50.222 Potential Hazard 6. Between Reflector and Ground Sg 12.556 Potential Hazard Table 5. Summary of Expected Radiation levels for Controlled Environment Calculated Maximum Radiation Power Density Region Level (mW/cm2) Hazard Assessment 1. Far Field (Rff = 85.0 m) Sff 13.952 Potential Hazard 2. Near Field (Rnf = 35.4 m) Snf 32.571 Potential Hazard 3. Transition Region (Rnf < Rt < Rff) St 32.571 Potential Hazard 4. Between Feed Assembly and Sfa 8733.245 Potential Hazard Antenna Reflector 5. Main Reflector Ssurface 50.222 Potential Hazard 6. Between Reflector and Ground Sg 12.556 Potential Hazard It is the applicant's responsibility to ensure that the public and operational personnel are not exposed to harmful levels of radiation. 8. Conclusions Based on the above analysis it is concluded that the FCC MPE guidelines have been exceeded (or met) in the regions of Table 4 and 5. The applicant proposes to comply with the MPE limits by one or more of the following methods. This antenna will be located in a fenced area. The fenced area will be sufficient to prohibit the general public from having access the areas that exceed the MPE limits Since one diameter removed from the main beam of the antenna or ½ diameters removed from the edge of the antenna the RF levels are reduced by a factor of 100 or 20 dB. None of the areas exceeding the MPE levels will be accessible by the general public. Radiation hazard signs will be posted while this earth station is in operation.

Exhibit B Radiation Hazard Report Page 5 of 5 Means of Compliance Controlled Areas The earth station’s operational staff will not have access to the areas that exceed the MPE levels while the earth station is in operation. The transmitters will be turned off during antenna maintenance The applicant agrees to abide by the conditions specified in Condition 5208 provided below: Condition 5208 - The licensee shall take all necessary measures to ensure that the antenna does not create potential exposure of humans to radiofrequency radiation in excess of the FCC exposure limits defined in 47 CFR 1.1307(b) and 1.1310 wherever such exposures might occur. Measures must be taken to ensure compliance with limits for both occupational/controlled exposure and for general population/uncontrolled exposure, as defined in these rule sections. Compliance can be accomplished in most cases by appropriate restrictions such as fencing. Requirements for restrictions can be determined by predictions based on calculations, modeling or by field measurements. The FCC's OET Bulletin 65 (available on-line at www.fcc.gov/oet/rfsafety) provides information on predicting exposure levels and on methods for ensuring compliance, including the use of warning and alerting signs and protective equipment for worker. Prepared By: Timothy O. Crutcher Telecom Engineer COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147


Document Created: 2016-06-06 16:50:17
Document Modified: 2016-06-06 16:50:17
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