Application Form [pdf]

This document pretains to SES-STA-20110518-00598 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2011051800598_889408

http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=92200&form=P015_101.htm... Approved by OMB 3060-0678 Date & Time Filed: May 16 2011 11:56:31:736AM File Number: SES-MOD-INTR2011-01405 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: E070072 VSAT modification to add Andrew 2.4-m 1-8. Legal Name of Applicant Phone Name: Infosat Able Holdings, Inc. Number: 202-429-4900 DBA Fax Name: Number: 202-429-4912 Street: 1229 19th Street, NW E-Mail: City: Washington State: DC Country: USA Zipcode: 20036 2413 Attention: 9-16. Name of Contact Representative Phone Name: Joseph A. Godles Number: 202-429-4900 Company: Goldberg Godles Wiener & Wright Fax Number: 202-429-4912 Street: 1229 19th Street, NW E-Mail: jgodles@g2w2.com City: Washington State: DC Country: USA Zipcode: 20036 2413 Attention: Relationship: Legal Counsel CLASSIFICATION OF FILING 17. Choose the button next to the classification that applies to this filing for both questions a. and b. (N/A) b1. Application for License of New Station Choose only one for 17a and only one for 17b. (N/A) b2. Application for Registration of New Domestic Receive-Only Station b3. Amendment to a Pending Application a1. Earth Station 1 of 9 5/16/2011 11:56 AM

http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=92200&form=P015_101.htm... a2. Space Station b4. Modification of License or Registration b5. Assignment of License or Registration 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. 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 CGV - Fixed Satellite VSAT System 18. If this filing is in reference to an existing station, 19. If this filing is an amendment to a pending application enter both fields, if this filing is a modification please enter only enter: the file number: (a) Call sign of station: (b) File number: (a) Date pending application was filed: E070072 SESMFS2008100301286 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) 22. If earth station applicant, check all that apply. 21. STATUS: Choose the button next to the applicable status. 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 2 of 9 5/16/2011 11:56 AM

http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=92200&form=P015_101.htm... 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: Frequency Upper: (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 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) 3 of 9 5/16/2011 11:56 AM

http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=92200&form=P015_101.htm... ENVIRONMENTAL POLICY 28. Would a Commission grant of any proposal in this application or amendment have a significant environmental impact as defined by 47 Yes No CFR 1.1307? If YES, submit the statement as required by 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, major modifications, or major amendments. Rad Haz report 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 corporation organized under the laws of a foreign country? Yes No N/A 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 Yes No N/A organized under the laws of a foreign 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. 4 of 9 5/16/2011 11:56 AM

http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=92200&form=P015_101.htm... 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 Yes No application for an initial, modification or renewal of FCC station 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 controlling the applicant ever been Yes No 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 communication, directly or indirectly, through control of manufacture or sale of Yes No radio apparatus, exclusive traffic arrangement or any other means or unfair methods of competition?If Yes, attach as an exhibit, an explanation of circumstances 39. Is the applicant, or any person directly or indirectly controlling the applicant, currently a party in any pending matter referred to in the Yes No 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 distribution of a controlled substance. See 47 CFR 1.2002(b) for the meaning of"party to the application" for these Yes No purposes. 42a. Does the applicant intend to use a non-U.S. licensed satellite to provide service in the United States? If Yes, answer 42b and attach an Yes No 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?Canada 5 of 9 5/16/2011 11:56 AM

http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=92200&form=P015_101.htm... 43. Description. (Summarize the nature of the application and the services to be provided). Applicant seeks herein to add a new terminal type to its existing VSAT authority. 43a. Geographic Service Rule Certification By selecting A, the undersigned certifies that the applicant is not subject to the geographic service or geographic coverage requirements A 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 B specified in 47 C.F.R. Part 25 and will comply with such 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, C while technically feasible, 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 Bryan Hetlinger Director, Network Services WILLFUL FALSE STATEMENTS MADE ON THIS FORM ARE PUNISHABLE BY FINE AND / OR 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) 6 of 9 5/16/2011 11:56 AM

http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=92200&form=P015_101.htm... FOR OFFICIAL USE ONLY Location of Earth Station Site E1: Site Identifier: Remote2 E5. Call Sign: E070072 E2: Contact Name Bryan Hetlinger E6. Phone Number: 281-598-3314 E3. Street: E7. City: E8. County: E4. State E9. Zip Code E10. Area of Operation: CONUS and AK E11. Latitude: 0 ° 0 ' 0.0 " E12. Longitude: 0 ° 0 ' 0.0 " E13. Lat/Lon Coordinates are: NAD-27 NAD-83 N/A E14. Site Elevation (AMSL): 0.0 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 Yes No N/A measurement? If NO, provide as a technical 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 Yes No N/A (b) as demonstrated by the 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 Yes No E19. Is coordination with another country required? If YES, attach the name of the country(ies) and plot of Yes No coordination contours as 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:ALSAT | ALL AUTHORIZED U.S. | ALSAT If you selected OTHER, please enter the following: E21. Common Name: E22. ITU Name: 7 of 9 5/16/2011 11:56 AM

http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=92200&form=P015_101.htm... E23. Orbit Location: E24. Country: POINTS OF COMMUNICATION (Destination Points) E25. Site Identifier: E26. Common Name: E27. Country: ANTENNA E28. Antenna E29. E30. E31. E32. Antenna E41/42. Antenna Gain Transmint and/or Site ID Id Quantity Manufacturer Model Size Recieve(____dBi at _____GHz) Remote2 Remote 2 50 Andrew Type 243 2.4 47.4 dBi at 11.95 Remote2 Remote 2 50 Andrew Type 243 2.4 49.2 dBi at 14.25 E37. Building E38. Total Input E39. Maximum E28. E35. Above E36. Above E40. Total EIRP E33/34. Diameter Height Above Power at Antenna Height Antenna Ground Sea for al Minor/Major(meters) Ground antenna Above Id Level(meters) Level(meters) carriers(dBW) Level(meters) flange(Watts) Rooftop(meters) Remote 2 0.0/0.0 4.0 0.0 0.0 3.0 0.0 54.0 FREQUENCY E28. E45. E43/44. Frequency E46. Antenna E47. Emission E48. Maximum EIRP E49. Maximum ERIP Density Antenna T/R Bands(MHz) Polarization(H,V,L,R) Designator per Carrier(dBW) per Carrier(dBW/4kHz) Id Mode Remote 2 11700 12200 R Horizontal 6M81G7W 0.0 0.0 E50. Modulation and Services 9000 KBPS R .793 QPSK, DIGITAL DATA Remote 2 14000 14500 T Vertical 518KG7W 45.0 23.9 E50. Modulation and Services 518 KBPS R .66 QPSK, DIGITAL DATA FREQUENCY COORDINATION E56. Earth E57. E58. Earth E59. E54/55. Range of Station Antenna Station Antenna E28. E52/53. E60. Maximum EIRP E51. Satellite Satellite Arc Azimuth Elevation Azimuth Elevation Antenna Frequency Density toward the Orbit Type Eastern/Western Angle Angle Angle Angle Id Limits(MHz) Horizon(dBW/4kHz) Limit Eastern Eastern Western Western Limit Limit Limit Limit Remote 2 Geostationary 11700 12200 99.0/133.0 0.0 0.0 0.0 0.0 0.0 Geostationary 14000 14500 99.0/133.0 0.0 0.0 0.0 0.0 0.0 REMOTE CONTROL POINT LOCATION E61. Call Sign E66. Phone Number NOTE: Please enter the callsign of the controlling station, not the callsign for which this application is being filed. 8 of 9 5/16/2011 11:56 AM

http://licensing.fcc.gov/ibfsweb/ib.page.FetchForm?id_app_num=92200&form=P015_101.htm... E62. Street Address E63. City E68. County E67/68. State/Country E64. Zip Code / FCC NOTICE REQUIRED BY THE PAPERWORK REDUCTION ACT 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. 9 of 9 5/16/2011 11:56 AM

Radiation Hazard Study 1.0 Introduction This study analyzes the radiation hazard environment produced by 2.4 meter Ku-band offset antennas with a maximum of 3 Watts into the antenna feed. The antennas may be operated in uncontrolled access areas. The reference document for this study is OET Bulletin No. 65, Edition 97-01, Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, August 1997. 2.0 Earth Station Antenna Parameters Antenna diameter (D) = 2.4 meters Wavelength (λ) = 0.021 meters at 14.25 GHz Maximum power to the antenna (P) = 3 Watts 2.4 meter antenna gain (G) = 49.2 dBi at 14.25 GHz 2.4 meter antenna efficiency (η) = 0.65 3.0 Region Definition The limit of the near field (Rnf) and the beginning of the far field (Rff) are calculated as follows: Near Field Extent Rnf = D2 4λ Rnf = 2.42 /(4 * 0.021) = 68.5 m Far Field Extent Rff = 0.6 D2 λ Rff = (0.6)(2.42)/(0.021) = 164.3 m The region between 68.5 m and 164.3 m is designated as the transition region.

4.0 Power Density Calculations 4.1 Near Field Region The on-axis near field power density is calculated as follows: Snf = 16ηP πD2 Snf = (16)(0.65)(3) (3.14)(2.42) Snf = 1.72 W/m2 = 0.172 mW/cm2 The maximum on-axis power density in the far field region is is Snf = 0.172 mW/cm2. This meets the Uncontrolled Exposure limit of 1.0mW/cm2 found in Appendix A or OET Bulletin 65. The off-axis power density in the near field will always be less than the on-axis power density and therefore all volumes within the near field will meet the Uncontrolled Exposure limit of 1.0 mW/cm2. 4.2 Transition Region The on-axis power density in the transition region is calculated as follows: St = SnfRnf R The maximum on-axis power density in the transition region is when R = Rnf at which point the power density is St = Snf = 0.172 mW/cm2. This meets the Uncontrolled Exposure limit of 1.0mW/cm2 found in Appendix A or OET Bulletin 65. The off-axis power density in the transition region will always be less than the on-axis power density and therefore all volumes within the transition region will meet the Uncontrolled Exposure limit of 1.0 mW/cm2 found in Appendix A of OET Bulletin 65.

4.3 Far Field Region The on-axis power density in the far field region is calculated as follows: Sff = PG 4πR2 Sff = (3)(10(49.2/10)) (4)(3.14)(164.3)2 Sff = 0.737 W/m2 = 0.0737 mW/cm2 The maximum on-axis power density in the far field region is is Sff = 0.0737 mW/cm2. This meets the Uncontrolled Exposure limit of 1.0mW/cm2 found in Appendix A of OET Bulletin 65. The off-axis power density in the far field will always be less than the on-axis power density and therefore all volumes within the far field will meet the Uncontrolled Exposure limit of 1.0 mW/cm2. 4.4 Region between the Feed Flange and Main Reflector Transmissions from the feed horn are directed toward the reflector surface. The maximum power density between the feed and reflector surface can be calculated as: Sfl = 4P/A = 16P/(πD2) Sfl = (16)(3)/(3.14 * 0.122) Sfl = 1061 W/m2 = 106.1 mW/cm2 This value exceeds the Uncontrolled Exposure limit of 1.0 mW/cm2 found in Appendix A of OET Bulletin 65 and represents a potential hazard. Therefore, a warning label will be affixed to the surface of the reflector to warn people to avoid the region between the antenna feed and the surface of the reflector. 4.5 Reflector Surface Region The power density at the surface of the reflector is approximated by: Sr = 4P/A = 16P/(πD2) Sr = (16)(3)/(3.14)(2.42)

Sr = 2.65 W/m2 = 0.265 mW/cm2 This value meets the Uncontrolled Exposure limit of 1.0 mW/cm2 found in Appendix A of OET Bulletin 65. 4.5 Region Between Antenna and Ground Assuming uniform illumination of the reflector surface, the power density between the antenna and the ground can be calculated as follows: Sg = P/A = 4P/(πD2) Sg = (4)(3)/(3.14)(2.42) = 0.66 W/m2 = 0.066 mW/cm2 This value meets the Uncontrolled Exposure limit found in Appendix A of OET Bulletin 65. 5.0 Summary Table 1. Summary of Expected Radiation Levels General Occupational/Controlled Population/Uncontrolled Exposure Exposure Maximum Radiation Level Maximum Radiation Level (5.0 mW/cm²) (1.0 mW/cm²) Radiation Region Level Hazard Assessment Hazard Assessment (mW/cm2) Near Field 0.172 Satisfies FCC MPE Satisfies FCC MPE Rnf = 68.5 m Far Field 0.0737 Satisfies FCC MPE Satisfies FCC MPE Rff = 164.3 m Transition Region 0.172 Satisfies FCC MPE Satisfies FCC MPE Rnf < Rt < Rff Region between Feed and 106.1 Potential Hazard Potential Hazard Reflector Reflector Surface 0.265 Satisfies FCC MPE Satisfies FCC MPE Region between Antenna and 0.066 Satisfies FCC MPE Satisfies FCC MPE Ground

6.0 Conclusion Using the methods outlined in OET Bulletin 65, the 2.4 m antennas meet the Uncontrolled and Controlled Exposure limits in all regions except in the region between the antenna feed and the reflector. A warning label will be affixed to the surface of the reflectors to warn people to avoid the region between the antenna's flange and the surface of the reflector.

Radiation Hazard Study 1.0 Introduction This study analyzes the radiation hazard environment produced by 2.4 meter Ku-band offset antennas with a maximum of 3 Watts into the antenna feed. The antennas may be operated in uncontrolled access areas. The reference document for this study is OET Bulletin No. 65, Edition 97-01, Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, August 1997. 2.0 Earth Station Antenna Parameters Antenna diameter (D) = 2.4 meters Wavelength (λ) = 0.021 meters at 14.25 GHz Maximum power to the antenna (P) = 3 Watts 2.4 meter antenna gain (G) = 49.2 dBi at 14.25 GHz 2.4 meter antenna efficiency (η) = 0.65 3.0 Region Definition The limit of the near field (Rnf) and the beginning of the far field (Rff) are calculated as follows: Near Field Extent Rnf = D2 4λ Rnf = 2.42 /(4 * 0.021) = 68.5 m Far Field Extent Rff = 0.6 D2 λ Rff = (0.6)(2.42)/(0.021) = 164.3 m The region between 68.5 m and 164.3 m is designated as the transition region.

4.0 Power Density Calculations 4.1 Near Field Region The on-axis near field power density is calculated as follows: Snf = 16ηP πD2 Snf = (16)(0.65)(3) (3.14)(2.42) Snf = 1.72 W/m2 = 0.172 mW/cm2 The maximum on-axis power density in the far field region is is Snf = 0.172 mW/cm2. This meets the Uncontrolled Exposure limit of 1.0mW/cm2 found in Appendix A or OET Bulletin 65. The off-axis power density in the near field will always be less than the on-axis power density and therefore all volumes within the near field will meet the Uncontrolled Exposure limit of 1.0 mW/cm2. 4.2 Transition Region The on-axis power density in the transition region is calculated as follows: St = SnfRnf R The maximum on-axis power density in the transition region is when R = Rnf at which point the power density is St = Snf = 0.172 mW/cm2. This meets the Uncontrolled Exposure limit of 1.0mW/cm2 found in Appendix A or OET Bulletin 65. The off-axis power density in the transition region will always be less than the on-axis power density and therefore all volumes within the transition region will meet the Uncontrolled Exposure limit of 1.0 mW/cm2 found in Appendix A of OET Bulletin 65.

4.3 Far Field Region The on-axis power density in the far field region is calculated as follows: Sff = PG 4πR2 Sff = (3)(10(49.2/10)) (4)(3.14)(164.3)2 Sff = 0.737 W/m2 = 0.0737 mW/cm2 The maximum on-axis power density in the far field region is is Sff = 0.0737 mW/cm2. This meets the Uncontrolled Exposure limit of 1.0mW/cm2 found in Appendix A of OET Bulletin 65. The off-axis power density in the far field will always be less than the on-axis power density and therefore all volumes within the far field will meet the Uncontrolled Exposure limit of 1.0 mW/cm2. 4.4 Region between the Feed Flange and Main Reflector Transmissions from the feed horn are directed toward the reflector surface. The maximum power density between the feed and reflector surface can be calculated as: Sfl = 4P/A = 16P/(πD2) Sfl = (16)(3)/(3.14 * 0.122) Sfl = 1061 W/m2 = 106.1 mW/cm2 This value exceeds the Uncontrolled Exposure limit of 1.0 mW/cm2 found in Appendix A of OET Bulletin 65 and represents a potential hazard. Therefore, a warning label will be affixed to the surface of the reflector to warn people to avoid the region between the antenna feed and the surface of the reflector. 4.5 Reflector Surface Region The power density at the surface of the reflector is approximated by: Sr = 4P/A = 16P/(πD2) Sr = (16)(3)/(3.14)(2.42)

Sr = 2.65 W/m2 = 0.265 mW/cm2 This value meets the Uncontrolled Exposure limit of 1.0 mW/cm2 found in Appendix A of OET Bulletin 65. 4.5 Region Between Antenna and Ground Assuming uniform illumination of the reflector surface, the power density between the antenna and the ground can be calculated as follows: Sg = P/A = 4P/(πD2) Sg = (4)(3)/(3.14)(2.42) = 0.66 W/m2 = 0.066 mW/cm2 This value meets the Uncontrolled Exposure limit found in Appendix A of OET Bulletin 65. 5.0 Summary Table 1. Summary of Expected Radiation Levels General Occupational/Controlled Population/Uncontrolled Exposure Exposure Maximum Radiation Level Maximum Radiation Level (5.0 mW/cm²) (1.0 mW/cm²) Radiation Region Level Hazard Assessment Hazard Assessment (mW/cm2) Near Field 0.172 Satisfies FCC MPE Satisfies FCC MPE Rnf = 68.5 m Far Field 0.0737 Satisfies FCC MPE Satisfies FCC MPE Rff = 164.3 m Transition Region 0.172 Satisfies FCC MPE Satisfies FCC MPE Rnf < Rt < Rff Region between Feed and 106.1 Potential Hazard Potential Hazard Reflector Reflector Surface 0.265 Satisfies FCC MPE Satisfies FCC MPE Region between Antenna and 0.066 Satisfies FCC MPE Satisfies FCC MPE Ground

6.0 Conclusion Using the methods outlined in OET Bulletin 65, the 2.4 m antennas meet the Uncontrolled and Controlled Exposure limits in all regions except in the region between the antenna feed and the reflector. A warning label will be affixed to the surface of the reflectors to warn people to avoid the region between the antenna's flange and the surface of the reflector.


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Document Modified: 2011-05-16 12:17:16
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