Attachment Reference Copy

This document pretains to SES-STA-20130228-00228 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2013022800228_987744

Page 1 of 8 Approved by OMB 3060-0678 Date & Time Filed: Feb 28 2013 7:11:26:453PM File Number: SES-MOD-INTR2013-00496 FCC APPLICATION FOR SPACE AND EARTH STATION:MOD OR AMD - MAIN FORM FCC Use Only FCC 312 MAIN FORM FOR OFFICIAL USE ONLY APPLICANT INFORMATION Enter a description of this application to identify it on the main menu: Prudhoe Bay Earth Station Modification 1-8. Legal Name of Applicant Phone Name: DG Consents Sub, Inc. Number: 303-684-4000 DBA Fax Name: Number: 303-684-4340 Street: 1601 Dry Creek Drive E-Mail: scedars@digitalglobe.com City: Longmont State: CO Country: USA Zipcode: 80503 - Attention: Mr. Seth Cedars 9-16. Name of Contact Representative Name: Stephen D. Baruch Phone Number: 202-416-6782 Company: Lerman Senter PLLC Fax Number: 202-429-4626 Street: 2000 K Street, NW E-Mail: sbaruch@lermansenter.com Suite 600 City: Washington State: DC Country: USA Zipcode: 20006- Attention: Relationship: Legal Counsel CLASSIFICATION OF FILING 17. Choose the button next to the classification that applies to this filing (N/A) b1. Application for License of New Station for both questions a. and b. Choose (N/A) b2. Application for Registration of New Domestic Receive-Only Station only one for 17a and only one for 17b. b3. Amendment to a Pending Application b4. Modification of License or Registration a1. Earth Station b5. Assignment of License or Registration a2. Space Station b6. Transfer of Control of License or Registration b7. Notification of Minor Modification (N/A) b8. Application for License of New Receive-Only Station Using Non-U.S. Licensed Satellite (N/A) b9. Letter of Intent to Use Non-U.S. Licensed Satellite to Provide Service in the United States (N/A) b10. Other (Please specify) (N/A) b11. Application for Earth Station to Access a Non-U.S.satellite Not Currently Authorized to Provide the Proposed Service in the Proposed Frequencies in the United States. 17c. Is a fee submitted with this application? If Yes, complete and attach FCC Form 159. http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=100119&form=P015_10... 2/28/2013

Page 2 of 8 If No, indicate reason for fee exemption (see 47 C.F.R.Section 1.1114). Governmental Entity Noncommercial educational licensee Other(please explain): 17d. Fee Classification CGX - Fixed Satellite Transmit/Receive Earth Station 18. If this filing is in reference to an 19. If this filing is an amendment to a pending application enter both fields, if this filing is existing station, enter: a modification please enter only the file number: (a) Call sign of station: (b) File number: E040264 (a) Date pending application was filed: SESMOD2007080601046 TYPE OF SERVICE 20. NATURE OF SERVICE: This filing is for an authorization to provide or use the following type(s) of service(s): Select all that apply: a. Fixed Satellite b. Mobile Satellite c. Radiodetermination Satellite d. Earth Exploration Satellite e. Direct to Home Fixed Satellite f. Digital Audio Radio Service g. Other (please specify) 21. STATUS: Choose the button next to the applicable status. 22. If earth station applicant, check all that apply. Choose only one. Using U.S. licensed satellites Common Carrier Non-Common Carrier Using Non-U.S. licensed satellites 23. If applicant is providng INTERNATIONAL COMMON CARRIER service, see instructions regarding Sec. 214 filings. Choose one. Are these facilities: Connected to a Public Switched Network Not connected to a Public Switched Network N/A 24. FREQUENCY BAND(S): Place an 'X' in the box(es) next to all applicable frequency band(s). a. C-Band (4/6 GHz) b. Ku-Band (12/14 GHz) c.Other (Please specify upper and lower frequencies in MHz.) Frequency Lower: 2042 Frequency Upper: 8400 (Please specify additional frequencies in an attachment) TYPE OF STATION 25. CLASS OF STATION: Choose the button next to the class of station that applies. Choose only one. a. Fixed Earth Station b. Temporary-Fixed Earth Station c. 12/14 GHz VSAT Network d. Mobile Earth Station e. Geostationary Space Station f. Non-Geostationary Space Station g. Other (please specify) 26. TYPE OF EARTH STATION FACILITY: Transmit/Receive Transmit-Only Receive-Only N/A "For Space Station applications, select N/A." PURPOSE OF MODIFICATION 27. The purpose of this proposed modification is to: (Place an 'X' in the box(es) next to all that apply.) a -- authorization to add new emission designator and related service b -- authorization to change emission designator and related service c -- authorization to increase EIRP and EIRP density http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=100119&form=P015_10... 2/28/2013

Page 3 of 8 d -- authorization to replace antenna e -- authorization to add antenna f -- authorization to relocate fixed station g -- authorization to change frequency(ies) h -- authorization to add frequency i -- authorization to add Points of Communication (satellites & countries) j -- authorization to change Points of Communication (satellites & countries) k -- authorization for facilities for which environmental assessment and radiation hazard reporting is required l -- authorization to change orbit location m -- authorization to perform fleet management n -- authorization to extend milestones o -- Other (Please specify) ENVIRONMENTAL POLICY 28. Would a Commission grant of any proposal in this application or amendment have a significant environmental impact as defined by 47 CFR 1.1307? If YES, submit the statement as required by Yes No Sections 1.1308 and 1.1311 of the Commission's rules, 47 C.F.R. 1.1308 and 1.1311, as an exhibit to this application.A Radiation Hazard Study must accompany all applications for new transmitting facilities, Rad Haz Study major modifications, or major amendments. ALIEN OWNERSHIP Earth station applicants not proposing to provide broadcast, common carrier, aeronautical en route or aeronautical fixed radio station services are not required to respond to Items 30-34. 29. Is the applicant a foreign government or the representative of any foreign government? Yes No 30. Is the applicant an alien or the representative of an alien? Yes No N/A 31. Is the applicant a corporation organized under the laws of any foreign government? Yes No N/A 32. Is the applicant a corporation of which more than one-fifth of the capital stock is owned of record or voted by aliens or their representatives or by a foreign government or representative thereof or by any Yes No N/A corporation organized under the laws of a foreign country? 33. Is the applicant a corporation directly or indirectly controlled by any other corporation of which more than one-fourth of the capital stock is owned of record or voted by aliens, their representatives, or by a foreign government or representative thereof or by any corporation organized under the laws of a foreign Yes No N/A country? 34. If any answer to questions 29, 30, 31, 32 and/or 33 is Yes, attach as an exhibit an identification of the aliens or foreign entities, their nationality, their relationship to the applicant, and the percentage of stock they own or vote. BASIC QUALIFICATIONS 35. Does the Applicant request any waivers or exemptions from any of the Commission's Rules? Yes No If Yes, attach as an exhibit, copies of the requests for waivers or exceptions with supporting documents. 36. Has the applicant or any party to this application or amendment had any FCC station authorization or license revoked or had any application for an initial, modification or renewal of FCC station Yes No authorization, license, or construction permit denied by the Commission? If Yes, attach as an exhibit, an explination of circumstances. 37. Has the applicant, or any party to this application or amendment, or any party directly or indirectly Yes No controlling the applicant ever been convicted of a felony by any state or federal court? If Yes, attach as an exhibit, an explination of circumstances. 38. Has any court finally adjudged the applicant, or any person directly or indirectly controlling the applicant, guilty of unlawfully monopolizing or attemptiing unlawfully to monopolize radio Yes No communication, directly or indirectly, through control of manufacture or sale of radio apparatus, exclusive traffic arrangement or any other means or unfair methods of competition?If Yes, attach as an exhibit, an explanation of circumstances http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=100119&form=P015_10... 2/28/2013

Page 4 of 8 39. Is the applicant, or any person directly or indirectly controlling the applicant, currently a party in any Yes No pending matter referred to in the preceding two items? If yes, attach as an exhinit, an explanation of the circumstances. 40. If the applicant is a corporation and is applying for a space station license, attach as an exhibit the names, address, and citizenship of those stockholders owning a record and/or voting 10 percent or more of the Filer's voting stock and the percentages so held. In the case of fiduciary control, indicate the beneficiary(ies) or class of beneficiaries. Also list the names and addresses of the officers and directors of the Filer. 41. By checking Yes, the undersigned certifies, that neither applicant nor any other party to the application is subject to a denial of Federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 U.S.C. Section 862, because of a conviction for possession or Yes No distribution of a controlled substance. See 47 CFR 1.2002(b) for the meaning of "party to the application" for these purposes. 42a. Does the applicant intend to use a non-U.S. licensed satellite to provide service in the United States? Yes No If Yes, answer 42b and attach an exhibit providing the information specified in 47 C.F.R. 25.137, as appropriate. If No, proceed to question 43. 42b. What administration has licensed or is in the process of licensing the space station? If no license will be issued, what administration has coordinated or is in the process of coordinating the space station? 43. Description. (Summarize the nature of the application and the services to be provided). See Attachment A.Attachment A 43a. Geographic Service Rule Certification By selecting A, the undersigned certifies that the applicant is not subject to the geographic service or A geographic coverage requirements specified in 47 C.F.R. Part 25. By selecting B, the undersigned certifies that the applicant is subject to the geographic service or geographic coverage requirements specified in 47 C.F.R. Part 25 and will comply with such B requirements. By selecting C, the undersigned certifies that the applicant is subject to the geographic service or geographic coverage requirements specified in 47 C.F.R. Part 25 and will not comply with such requirements because it is not feasible as a technical matter to do so, or that, while technically feasible, C such services would require so many compromises in satellite design and operation as to make it economically unreasonable. A narrative description and technical analysis demonstrating this claim are attached. --> CERTIFICATION The Applicant waives any claim to the use of any particular frequency or of the electromagnetic spectrum as against the regulatory power of the United States because of the previous use of the same, whether by license or otherwise, and requests an authorization in accordance with this application. The applicant certifies that grant of this application would not cause the applicant to be in violation of the spectrum aggregation limit in 47 CFR Part 20. All statements made in exhibits are a material part hereof and are incorporated herein as if set out in full in this application. The undersigned, individually and for the applicant, hereby certifies that all statements made in this application and in all attached exhibits are true, complete and correct to the best of his or her knowledge and belief, and are made in good faith. 44. Applicant is a (an): (Choose the button next to applicable response.) Individual Unincorporated Association Partnership Corporation Governmental Entity Other (please specify) 45. Name of Person Signing 46. Title of Person Signing Yancey L. Spruill Treasurer WILLFUL FALSE STATEMENTS MADE ON THIS FORM ARE PUNISHABLE BY FINE AND / OR http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=100119&form=P015_10... 2/28/2013

Page 5 of 8 IMPRISONMENT (U.S. Code, Title 18, Section 1001), AND/OR REVOCATION OF ANY STATION AUTHORIZATION (U.S. Code, Title 47, Section 312(a)(1)), AND/OR FORFEITURE (U.S. Code, Title 47, Section 503). SATELLITE EARTH STATION AUTHORIZATIONS FCC Form 312 - Schedule B:(Technical and Operational Description) FOR OFFICIAL USE ONLY Location of Earth Station Site E1: Site Identifier: Prudhoe Bay ES E5. Call Sign: E040264 E2: Contact Name Remote Control Point E6. Phone Number: 907-659-1910 E3. Street: Tract #53, ASLS 76-227 E7. City: Prudhoe Bay North Slope E8. County: North Slope Borough E4. State AK E9. Zip Code 99734 E10. Area of Operation: N/A E11. Latitude: 70 ° 13 ' 13.6 " N E12. Longitude: 148 ° 23 ' 59.2 " W E13. Lat/Lon Coordinates are: -27 -83 E14. Site Elevation (AMSL): 15.0 meters E15. If the proposed antenna(s) operate in the Fixed Satellite Service (FSS) with geostationary satellites, do(es) the proposed antenna(s) comply with the antenna gain patterns specified in Section 25.209(a) and (b) as demonstrated by the manufacturer's qualification measurement? If NO, provide as a technical Yes analysis showing compliance with two-degree spacing policy. E16. If the proposed antenna(s) do not operate in the Fixed Satellite Service (FSS), or if they operate in the Fixed Satellite Service (FSS) with non-geostationary satellites, do(es) the proposed antenna(s) comply with the antenna gain patterns specified in Section 25.209(a2) and (b) as demonstrated by the Yes manufacturer's qualification measurements? E17. Is the facility operated by remote control? If YES, provide the location and telephone number of the control point. Yes No E18. Is frequency coordination required? If YES, attach a frequency coordination report as Coordination Report Yes No E19. Is coordination with another country required? If YES, attach the name of the country(ies) and plot of coordination contours as Yes No E20. FAA Notification - (See 47 CFR Part 17 and 47 CFR part 25.113(c)) Where FAA notification is required, have you attached a copy of a completed FCC Form 854 and/or the FAA's study regarding the potential hazard of the structure to aviation? Yes No FAILURE TO COMPLY WITH 47 CFR PARTS 17 AND 25 WILL RESULT IN THE RETURN OF THIS APPLICATION. POINTS OF COMMUNICATION Satellite Name:OTHER | OTHER | If you selected OTHER, please enter the following: E21. Common Name: IKONOS E22. ITU Name: E23. Orbit Location: NGSO E24. Country: USA Satellite Name:GeoEye 1 | GeoEye 1 | NGSO If you selected OTHER, please enter the following: E21. Common Name: E22. ITU Name: E23. Orbit Location: E24. Country: http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=100119&form=P015_10... 2/28/2013

Page 6 of 8 Satellite Name:GeoEye 2 | GeoEye 2 | NGSO If you selected OTHER, please enter the following: E21. Common Name: E22. ITU Name: E23. Orbit Location: E24. Country: Satellite Name:OTHER | OTHER | If you selected OTHER, please enter the following: E21. Common Name: WORLDVIEW-3 E22. ITU Name: E23. Orbit Location: NGSO E24. Country: POINTS OF COMMUNICATION (Destination Points) E25. Site Identifier: Prudhoe Bay ES E26. Common Name: E27. Country: USA ANTENNA E28. E32. E41/42. Antenna Gain E29. E30. E31. Site ID Antenna Antenna Transmint and/or Recieve Quantity Manufacturer Model Id Size (____dBi at _____GHz) Prudhoe V10- 1 1 ViaSat 5.4 28.5 dBi at 8.0300 Bay ES X/Y Prudhoe V10- 1 1 ViaSat 5.4 36.6 dBi at 2.0250 Bay ES X/Y E37. E38. Total E39. E35. Building E33/34. E36. Input Maximum E40. Total E28. Above Height Diameter Above Sea Power at Antenna EIRP for Antenna Ground Above Minor/Major Level antenna Height Above al carriers Id Level Ground (meters) (meters) flange Rooftop (dBW) (meters) Level (Watts) (meters) (meters) 1 0.0/0.0 12.8 27.8 0.0 100.0 0.0 57.0 FREQUENCY E28. E43/44. E45. E46. Antenna E47. E48. Maximum E49. Maximum Antenna Frequency T/R Polarization Emission EIRP per ERIP Density per Id Bands(MHz) Mode (H,V,L,R) Designator Carrier(dBW) Carrier(dBW/4kHz) 8135.000 Left and Right 1 R 150MG1D 0.0 0.0 8285.000 Circular E50. Modulation and Services QPSK, Data 8025.0000 Right Hand 1 R 320MG7D 0.0 0.0 8345.0000 Circular E50. Modulation and Services Image Data 8025.0000 Left and Right 1 R 370MG1D 0.0 0.0 8395.0000 Circular E50. Modulation and Services QPSK, Data 8345.9680 Right Hand 1 R 64K0G1D 0.0 0.0 8346.0320 Circular E50. Modulation and Services Image Data 8385.9400 Right Hand 1 R 120KG1D 0.0 0.0 8386.0600 Circular E50. Modulation and Services QPSK, Telemetry 8393.9705 Right Hand 1 R 59K7G1D 0.0 0.0 8394.0295 Circular http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=100119&form=P015_10... 2/28/2013

Page 7 of 8 E50. Modulation and Services QPSK, Telemetry 2042.0000 Right Hand 1 T 68K0G2D 53.0 53.0 2042.0000 Circular E50. Modulation and Services BPSK (TT&C) 2052.0000 Right Hand 1 T 1M32G1D 53.0 41.0 2052.0000 Circular E50. Modulation and Services BPSK (TT&C) 2052.0000 Right Hand 1 T 68K0G2D 53.0 53.0 2052.0000 Circular E50. Modulation and Services BPSK (TT&C) 2092.6000 Right Hand 1 T 1M32G1D 53.0 41.0 2092.6000 Circular E50. Modulation and Services BPSK (TT&C) 2042.0000 Right Hand 1 T NON 53.0 53.0 2042.0000 Circular E50. Modulation and Services Unmodulated Carrier 2052.0000 Right Hand 1 T NON 53.0 53.0 2052.0000 Circular E50. Modulation and Services Unmodulated Carrier 2092.6000 Right Hand 1 T NON 53.0 53.0 2092.6000 Circular E50. Modulation and Services Unmodulated Carrier FREQUENCY COORDINATION E56. E58. E60. E57. E59. Earth Earth Maximum E52/53. E54/55. Range Antenna Antenna E28. Station Station EIRP E51. Satellite Frequency of Satellite Arc Elevation Elevation Antenna Azimuth Azimuth Density Orbit Type Limits Eastern/Western Angle Angle Id Angle Angle toward the (MHz) Limit Eastern Western Eastern Western Horizon Limit Limit Limit Limit (dBW/4kHz) Non- 2042.0000 1 0.0/0.0 0.0 3.0 360.0 3.0 34.6 Geostationary 2042.0000 Non- 2052.0000 0.0/0.0 0.0 3.0 360.0 3.0 34.6 Geostationary 2052.0000 Non- 2092.6000 0.0/0.0 0.0 3.0 360.0 3.0 34.6 Geostationary 2092.6000 REMOTE CONTROL POINT LOCATION E61. Call Sign E66. Phone Number 303-684-4587 NOTE: Please enter the callsign of the controlling station, not the callsign for which this application is being filed. E62. Street Address 1601 Dry Creek Drive Suite 260 E63. City E68. County E67/68. E64. Zip Longmont Boulder State/Country Code CO/ USA 80503 FCC NOTICE REQUIRED BY THE PAPERWORK REDUCTION ACT http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=100119&form=P015_10... 2/28/2013

Page 8 of 8 The public reporting for this collection of information is estimated to average 2 hours per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the required data, and completing and reviewing the collection of information. If you have any comments on this burden estimate, or how we can improve the collection and reduce the burden it causes you, please write to the Federal Communications Commission, AMD-PERM, Paperwork Reduction Project (3060-0678), Washington, DC 20554. We will also accept your comments regarding the Paperwork Reduction Act aspects of this collection via the Internet if you send them to PRA@fcc.gov. PLEASE DO NOT SEND COMPLETED FORMS TO THIS ADDRESS. Remember - You are not required to respond to a collection of information sponsored by the Federal government, and the government may not conduct or sponsor this collection, unless it displays a currently valid OMB control number or if we fail to provide you with this notice. This collection has been assigned an OMB control number of 3060-0678. THE FOREGOING NOTICE IS REQUIRED BY THE PAPERWORK REDUCTION ACT OF 1995, PUBLIC LAW 104-13, OCTOBER 1, 1995, 44 U.S.C. SECTION 3507. http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=100119&form=P015_10... 2/28/2013

Attachment A DG Consents Sub, Inc. Earth Station Modification Application February 2013 Page 1 of 1 Description of Request With this application, DG Consents Sub, Inc. (“DG Consents”) requests modification of its earth station located in Prudhoe Bay, Alaska (Call Sign E040264) to permit communications with the GeoEye-1, GeoEye-2 and IKONOS space stations, licensed to GeoEye License Corp. (“GeoEye License”). Following a merger between DigitalGlobe Inc. and GeoEye, Inc., the parent companies of DG Consents and GeoEye License respectively, GeoEye License became a wholly-owned indirect subsidiary of DigitalGlobe, Inc. See SES-T/C-20120817-00761 (granted Jan. 10, 2013). The frequencies requested in the attached FCC Form 312, Schedule B will be added to the frequencies already authorized for operations from Prudhoe Bay. In addition, the Prudhoe Bay earth station will continue to be used to communicate with all satellites of DG Consents’ Earth Exploration Satellite Service (“EESS”) system (i.e., QuickBird, WorldView-1, and WorldView-2), as well as with the WorldView-3 satellite recently authorized for addition to DG Consents’ fleet of EESS space stations. See FCC File No. SAT-MOD-20120710-00111 (granted Jan. 24, 2013).

RADIATION HAZARD STUDY DIGITALGLOBE, PRUDHOE BAY EARTH STATION When applying for a license to construct and operate, modify, or renew an earth station, it is understood that licensees must certify whether grant of the application will have significant environmental impact as defined in the Federal Communications Commission‘s (FCC) rules, 47 C.F.R., Section 1.1307. In this report DigitalGlobe, Inc. analyzes the maximum radiofrequency (RF) levels emitted from the satellite communications antenna described below. The reference documentfor this study is OET Bulletin No. 65, Edition 97—01, Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, August 1997. ANTENNA NEAR—FIELD PoOWER DENSITY CALCULATION The extent of the near—field is defined by the following equation: Rnear= (Dant)2 / (4 2 ) where: Rnear= extent of the near—field (in meters) Dant= diameter of the antenna main reflector (in meters) A¥ =wavelength of the RF transmit frequency (in meters) The maximum on—axis power density within near—field is defined by the following equation: Snear = {(16 n Pfeed) / [TC (Dant)z]}/ 10 where: Snear= maximum on—axis power density within the near—field (in milliwatts per square centimeter) 1 =antenna aperature efficiency Preed = maximum power into antenna feed flange (in watts) Dant= diameter of the antenna main reflector (in meters) ANTENNA FAR—FIELD PoOWwER DENSITY CALCULATION The distance to the beginning of the far—field region is defined by the following equation: Rfar= [0.6(Dant)z] / A where: Rrar= distance to beginning of far—field (in meters) Dant= diameter of the antenna main reflector (in meters) A¥ =wavelength of the RF transmit frequency in (meters)

The maximum on—axis power density within the far—field is defined by the following equation: Sfar= [(Pfeed Gant) / 4 r (Rfar)z] / 10 where: Sfa= maximum on—axis power density in the far—field (in milliwatts per square centimeter) Preed = maximum power into antenna feed flange (in watts) Gant= antenna main beam gain at RF transmit frequency (in watts) Rrar= distance to beginning of far—field (in meters) ANTENNA TRANsITION REcion PoOwER DENSITY CALCULATION By definition, the maximum on—axis power densitiy in the transition region will never be greater than the maximum on—axis power densities in the near—field: StrS Snear where: Sir= maximum on—axis power density in the transition region (in milliwatts per square centimeter) Snear= maximum on—axis power density in the near—field (in milliwatts per square centimeter) ANTENNA FEED—FLANGE (OR SUBREFLECTOR) POWER DENSITY CALCULATION The maximum power density at the antenna feed—flange (or subreflector surface) is defined by the following equation: Sfeed(sub) = 1000 {[2(Preed)] / {{ x (Dreed(sub)}2] / 4}} where: Sfeed(sub) = maximum power density at the antenna feed—flange or subreflector surface (in milliwatts per square centimeter) Preed = maximum power into antenna feed flange (in watts) Dfeed(sub) = diameter of the antenna feed—flange or subreflector (in centimeters) ANTENNA MAIN REFLECTOR POWER DENSITY CALCULATION The maximum power density in the main reflector region of the antenna is defined by the following equation: Sant= {[Z(Pfeed)] / {[ T [Dant)z] /4—}} / 10 where: Sant= maximum power density in the antenna main reflector region (in milliwatts per square centimeter) Preed = maximum power into antenna feed flange (in watts) Dant= diameter of the antenna main reflector (in meters)

PowER DENSITY CALCULATION BETWEEN THE ANTENNA MAIN REFLECTOR AND THE GROUND The maximum power density between the antenna main reflector and the ground is defined by the following equation: Sground = {Pfeed/ {[ T (Dant)z] /4}} / 10 where: Sground = maximum power density between the antenna main reflector and the ground (in milliwatts per square centimeter) Pfeed = maximum power into antenna feed flange (in watts) Dant= diameter of the antenna main reflector (in meters) SUMMARY OF CALCULATED RADIATION LEVELS DigitalGlobe, Inc. understands the licensee must ensure people are not exposed to harmful levels of radiation. Maximum permissible exposure (MPE) limits for general population/uncontrolled exposure were not considered in this analysis for several reasons. The main—beam height above ground, minimum 3 degree elevation above horizon transmit inhibit mask and tracking motion of this highly directional antenna significantly limit exposure to the general population. Furthermore, access to DigitalGlobe earth stations is limited to authorized personnel who have been appropriately briefed and advised. MPE limits for occupational/controlled exposure, however, were considered in this analysis. It is standard practice for our technical staff to cease transmissions whenever maintenance is performed in close proximity to antenna reflector regions with potentially hazardous power density levels. Based on the results (see attached page entitled "Radiation Hazard Calculations") and our standard practices within our controlled antenna environment, the earth station operators / technicians should not be exposed to radiation levels exceeding 5 mW/cm2 power density over a six minute averaging time. CERTIFICATION I hereby certify that I am the technically qualified person responsible for preparation of the engineering information contained in this radiation hazard assessment, that I have reviewed the engineering information submitted, and that it is complete and accurate to the best of my knowledge. _ T 1 q * Lo )M{/ ,\/«G\,,/\/Q ==——* David D. Greenidge Mgr. Remote Ground Systems DigitalGlobe, Inc.

Radiation Hazard Calculations DigitalGlobe Prudhoe Bay Earth Station Antenna Diameter 5.4 m Feed—Flange or subreflector diameter 8.25 cm Transmit Frequency 2025 Mhz Maximum power into antenna feed—flange (watts) 100 W Antenna Gain 36.6 dBi Antenna aperture efficiency 0.55 Maximum power into antenna feed (dBm) 50.00 dBm EIRP (dBm) 86.60 dBm EIRP (watts) 457088.19 W Wave length 0.15 m Near field extent 49.21 m Beginning of far field 118.10 m Maximum on—axis power density far field 0.26)mW/cm4*2 Satisfies MPE Limits Maximum on—axis power density near field 0.96|mW/em*2 Satisfies MPE Limits Maximum on—axis power density transition region 0.96)mW/cm*2 Satisfies MPE Limits Maximum power density feed—flange 3741.38|mW/cmA2 Potential Hazard Maximum power density main reflector region 0.87|mW/cm42 Satisfies MPE Limits Maximum power density between main reflector and ground 0.44)mW/omA2 Satisfies MPE Limits

FREQUENCY COORDINATION AND INTERFERENCE ANALYSIS REPORT Prepared for DG Consents Sub, Inc. PRUDHOE BAY, AK Satellite Earth Station Prepared By: COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 February 27, 2013

TABLE OF CONTENTS 1. CONCLUSIONS ............................................................................................................................................ 3 2. SUMMARY OF RESULTS ............................................................................................................................ 4 3. SUPPLEMENTAL SHOWING....................................................................................................................... 5 4. EARTH STATION COORDINATION DATA.................................................................................................. 7 5. CERTIFICATION......................................................................................................................................... 11 Frequency Coordination and Interference Analysis Report 02/27/2013 Page 2 of 11

1. CONCLUSIONS An interference study considering all existing, proposed and prior coordinated microwave facilities within the coordination contours of the existing earth station demonstrates that the proposed modifications will operate satisfactorily with the common carrier and broadcast microwave environment. Further, there will be no restrictions of its operation due to interference considerations. Frequency Coordination and Interference Analysis Report 02/27/2013 Page 3 of 11

2. SUMMARY OF RESULTS A number of great circle interference cases were identified during the interference study of the proposed earth station. Each of the cases, which exceeded the interference objective on a line-of-sight basis, was profiled and the propagation losses estimated using NBS TN101 (Revised) techniques. The losses were found to be sufficient to reduce the signal levels to acceptable magnitudes in every case. Frequency Coordination and Interference Analysis Report 02/27/2013 Page 4 of 11

3. SUPPLEMENTAL SHOWING Pursuant to Part 25.203(c) of the FCC Rules and Regulations, the satellite earth station proposed in this application was coordinated by Comsearch using computer techniques and in accordance with Part 25 of the FCC Rules and Regulations. Coordination data for this earth station was sent to the below listed carriers with a letter dated 02/15/2013. Company 3G Wireless, LLC AERIAL VIDEO SYSTEMS AT&T California Alascom Inc Ascent Media Network Services, LLC Bellsouth Telecommunications, Inc. Borgeson, Tom R. Broadcast Sports Inc. CNG Communications, Inc. Carolina Telephone and Telegraph Co Casper, John CenturyTel of the Southwest, Inc. Chicago Comnet Corp Cincinnati Bell Wireless LLC Citywide News Network, Inc. Cohen, Elana Cowboys Stadium LP DCI II, INC. Direct Broadcast Services, Inc. GOODYEAR TIRE AND RUBBER COMPANY GSN New, Inc Global Microwave Systems Inc HF Enterprises, Inc Hallco Unlimited, Inc. Hawaiian Telcom, Inc. Heiden, William Illinois Bell Telephone Company Indiana Bell Telephone Company Information & Display Systems, Inc. Information Super Station, LLC International Communications Group, Inc. Kentucky RSA #3 Cellular General Partner Kentucky RSA #4 Cellular General Partner MERCURY COMMUNICATIONS Metro Networks Communications, Inc. Michigan Bell Telephone Company Moreen, Steven K NEW ENGLAND DIGITAL DISTRIBUTION, INC. NEW ENGLAND SATELLITE SYSTEMS INC NSM Surveillance Frequency Coordination and Interference Analysis Report 02/27/2013 Page 5 of 11

Navajo Communications Company NorthWest Suburbs Community Access Corp Ohio Bell Telephone Company On Scene Video Production Onboard Images Penn Service Microwave Co., Inc. Plateau Telecommunications, Inc. Plum TV, LLC Production & Satellite Services, Inc. Public Television Communications Center QUICK LINK CONNECTIONS INC QWEST CORPORATION RCC Minnesota Inc. - MN NE ND SD REMOTE FACILITIES CONSULTING SERVICES RF Central, LLC RF Film, Inc Radiofone, Inc. Randy Hermes Production Regulus Media Services, Inc. Remote Broadcasts, Inc. SBE Regional Coordinator Southwestern Bell Telephone L.P. Speedshotz, Inc Total RF Marketing Inc Unisat, Inc. United Telephone - Southeast VERIZON SOUTH INC. Verizon California Inc. Verizon Maryland, Inc. Verizon New England Inc. Verizon New Jersey, Inc. Verizon New York, Inc. Verizon North Inc. Verizon Northwest Inc. Verizon Pennsylvania, Inc. Verizon Virginia, Inc. Verizon Washington DC, Inc. Village Video Productions Inc Vyvx, LLC Westar Satellite Services LP Western Technical Services Wexler Video, Inc. Winged Vision Inc Wisconsin Bell, Inc. Wolfe Air Aviation Frequency Coordination and Interference Analysis Report 02/27/2013 Page 6 of 11

4. EARTH STATION COORDINATION DATA This section presents the data pertinent to frequency coordination of the proposed modifications to the earth station that was circulated to all carriers within its coordination contours. Frequency Coordination and Interference Analysis Report 02/27/2013 Page 7 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Date: 02/25/2013 Job Number: 130215COMSGE02 Administrative Information Status ENGINEER PROPOSAL Call Sign E040264 Licensee Code DBCONS Licensee Name DG Consents Sub, Inc. Site Information PRUDHOE BAY, AK Venue Name Latitude (NAD 83) 70° 13' 13.6" N Longitude (NAD 83) 148° 23' 59.2" W Climate Zone A Rain Zone 2 Ground Elevation (AMSL) 15.0 m / 49.2 ft Link Information Satellite Type Low Earth Orbit Mode TO - Transmit-Only Modulation Digital Minimum Elevation Angle 3.0° Azimuth Range 0.0° to 360° Antenna Centerline (AGL) 3.66 m / 12.0 ft Antenna Information Transmit - FCC32 Manufacturer ViaSat Model 5.4 Meter Gain / Diameter 36.6 dBi / 5.4 m 3-dB / 15-dB Beamwidth 0.50° / 1.00° Max Available RF Power (dBW/4 kHz) 16.4 (dBW/MHz) 40.4 Maximum EIRP (dBW/4 kHz) 53.0 (dBW/MHz) 77.0 Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Frequency Information Transmit 2.0 GHz Emission / Frequency Range (MHz) N0N - 68K0G2D / 2042.0 - 2042.0 N0N, 68K0G2D, 1M32G1D / 2052.0 - 2052.0 256KG1D - 1M32G1D / 2085.6875 - 2085.6875 N0N - 1M32G1D / 2092.6 - 2092.6 256KG1D - 1M32G1D / 2094.896 - 2094.896 Max Great Circle Coordination Distance 534.0 km / 331.8 mi Precipitation Scatter Contour Radius 760.3 km / 472.4 mi Frequency Coordination and Interference Analysis Report 02/27/2013 Page 8 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values PRUDHOE BAY, AK Licensee Name DG Consents Sub, Inc. Latitude (NAD 83) 70° 13' 13.6" N Longitude (NAD 83) 148° 23' 59.2" W Ground Elevation (AMSL) 15.0 m / 49.2 ft Antenna Centerline (AGL) 3.66 m / 12.0 ft Antenna Model ViaSat 5.4 Meter Antenna Mode Transmit 2.0 GHz Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Max Available RF Power 16.4 (dBW/4 kHz) Transmit 2.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 0 0.00 40.48 7.00 534.00 5 0.00 36.76 7.00 534.00 10 0.00 33.33 7.00 534.00 15 0.00 30.29 7.00 534.00 20 0.00 27.76 7.00 534.00 25 0.00 25.90 7.00 534.00 30 0.00 24.85 7.00 534.00 35 0.00 24.72 7.00 534.00 40 0.00 25.52 7.00 534.00 45 0.00 27.18 7.00 534.00 50 0.00 29.55 7.00 534.00 55 0.00 32.46 7.00 534.00 60 0.00 35.80 7.00 534.00 65 0.00 39.44 7.00 534.00 70 0.00 43.32 7.00 534.00 75 0.00 47.37 7.00 534.00 80 0.00 51.54 7.00 534.00 85 0.00 55.82 7.00 534.00 90 0.00 60.17 7.00 534.00 95 0.00 64.58 7.00 534.00 100 0.00 69.04 7.00 534.00 105 0.00 73.53 7.00 534.00 110 0.00 78.04 7.00 534.00 115 0.00 82.57 7.00 534.00 120 0.00 87.11 7.00 534.00 125 0.00 91.65 7.00 534.00 130 0.00 96.20 7.00 534.00 135 0.00 100.73 7.00 534.00 140 0.00 105.25 7.00 534.00 145 0.00 109.74 7.00 534.00 150 0.00 114.21 7.00 534.00 155 0.00 118.63 7.00 534.00 160 0.00 123.00 7.00 534.00 165 0.00 127.30 7.00 534.00 170 0.00 131.51 7.00 534.00 175 0.00 135.60 7.00 534.00 180 0.00 139.52 7.00 534.00 185 0.00 143.24 7.00 534.00 Frequency Coordination and Interference Analysis Report 02/27/2013 Page 9 of 11

COMSEARCH Earth Station Data Sheet 19700 Janelia Farm Boulevard, Ashburn, VA 20147 (703)726-5500 http://www.comsearch.com Coordination Values PRUDHOE BAY, AK Licensee Name DG Consents Sub, Inc. Latitude (NAD 83) 70° 13' 13.6" N Longitude (NAD 83) 148° 23' 59.2" W Ground Elevation (AMSL) 15.0 m / 49.2 ft Antenna Centerline (AGL) 3.66 m / 12.0 ft Antenna Model ViaSat 5.4 Meter Antenna Mode Transmit 2.0 GHz Interference Objectives: Long Term -154.0 dBW/4 kHz 20% Short Term -131.0 dBW/4 kHz 0.0025% Max Available RF Power 16.4 (dBW/4 kHz) Transmit 2.0 GHz Horizon Antenna Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) 190 0.00 146.67 7.00 534.00 195 0.00 149.71 7.00 534.00 200 0.00 152.24 7.00 534.00 205 0.00 154.10 7.00 534.00 210 0.00 155.15 7.00 534.00 215 0.00 155.28 7.00 534.00 220 0.00 154.48 7.00 534.00 225 0.00 152.82 7.00 534.00 230 0.00 150.45 7.00 534.00 235 0.00 147.54 7.00 534.00 240 0.00 144.20 7.00 534.00 245 0.00 140.56 7.00 534.00 250 0.23 136.57 7.00 534.00 255 0.25 132.53 7.00 534.00 260 0.21 128.38 7.00 534.00 265 0.00 124.18 7.00 534.00 270 0.00 119.83 7.00 534.00 275 0.00 115.42 7.00 534.00 280 0.00 110.96 7.00 534.00 285 0.00 106.47 7.00 534.00 290 0.00 101.96 7.00 534.00 295 0.00 97.43 7.00 534.00 300 0.00 92.89 7.00 534.00 305 0.00 88.35 7.00 534.00 310 0.00 83.80 7.00 534.00 315 0.00 79.27 7.00 534.00 320 0.00 74.75 7.00 534.00 325 0.00 70.26 7.00 534.00 330 0.00 65.79 7.00 534.00 335 0.00 61.37 7.00 534.00 340 0.00 57.00 7.00 534.00 345 0.00 52.70 7.00 534.00 350 0.00 48.49 7.00 534.00 355 0.00 44.40 7.00 534.00 Frequency Coordination and Interference Analysis Report 02/27/2013 Page 10 of 11

5. CERTIFICATION I HEREBY CERTIFY THAT I AM THE TECHNICALLY QUALIFIED PERSON RESPONSIBLE FOR THE PREPARATION OF THE FREQUENCY COORDINATION DATA CONTAINED IN THIS APPLICATION, THAT I AM FAMILIAR WITH PARTS 101 AND 25 OF THE FCC RULES AND REGULATIONS, THAT I HAVE EITHER PREPARED OR REVIEWED THE FREQUENCY COORDINATION DATA SUBMITTED WITH THIS APPLICATION, AND THAT IT IS COMPLETE AND CORRECT TO THE BEST OF MY KNOWLEDGE AND BELIEF. BY: _ Gary K. Edwards Senior Manager COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: February 27, 2013 Frequency Coordination and Interference Analysis Report 02/27/2013 Page 11 of 11


Document Created: 2013-02-28 19:27:58
Document Modified: 2013-02-28 19:27:58
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