Attachment 20091222145656.pdf

20091222145656.pdf

DECISION submitted by FCC

STA grant

2009-12-22

This document pretains to SES-STA-20091211-01572 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2009121101572_791049

E020241 SES—STA—20091211—01572 1B2009008061 DIRECTV Enterprises, LLC Approved by OMB 3060—0678 APPLICATION FOR EARTH STATION SPECIAL TEMPORARY AUTHORITY APPLICANT INFORMATIONEnter a description of this application to identify it on the main menu: STA request for D12 earth station E020241 for 30 day LEOP 1. Applicant Name: DIRECTV Enterprises, LLC Phone Number: 301—663—0053 DBA Name: Fax Number: 240—358—0569 Street: 2230 E. Imperial Hwy E—Mail: jwengryniuk@directv.com City: El Segundo State: CA Country: USA Zipcode: 90245 — Attention: Jack Wengryniuk AJ h Conmditiens I Fik#s 5Es—sth 20ihia l1 —ols92x Call Sign &2024 {Grant Date_| >~| 7'2’/()”‘ (or other identifier) Term Dates From La.' icGh To: + 30 S ! i ! | | Approved: I(Qxb.«e;fil /COL%W/%%‘/%

Attachment SES—STA—20091211—01572 E020241 Conditions: 1) DIRECTV‘s operations in the 18.3—18.8 GHz band (space—to—Earth) are not entitled to protection from co—primary terrestrial services until the period during which terrestrial Fixed Service stations remain co—primary has expired. 47 C.F.R. § 25.145(g). 2) The 17.8 — 20.2 GHz band is shared with U.S. Government space stations and associated earth stations in the Fixed—Satellite Services. Services within the United States over the satellite network of which this is a cooperating earth station are subject to coordination under US334 and operation of the earth station(s) authorized herein will be subject to any technical constraints resulting from this coordination. ) un Coucitims (5"72 fies See—<TAhzoog 121 —0 Call Sign CO§M 4)/ Grant Date ’9~1 a2) 0S i c NASV AJ¢)] (or other identifier) ‘Term Dates To: BOC{Q L{S From LQL,L rith. o wNT eadastiBoress:BureauP JI| Approved: 1i ts O 72. / oPl g

2. Contact Name: William M. Wiltshire Phone Number: 202—730—1350 Company: Wiltshire & Grannis LLP Fax Number: 202—730—1301 . Street: 1200 18th Street, NW E—Mail: wwiltshire@wiltshiregrannis.com City: Washington State: DC Country: USA Zipcode: — Attention: William M. Wiltshire Relationship: Legal Counsel (If your application is related to an application filed with the Commission, enter either the file number or the IB Submission ID of the related application. Please enter only one.) 3. Reference File Number or Submission ID 4a. Is a fee submitted with this application? IfYes, complete and attach FCC Form 159. If No, indicate reason for fee exemption (see 47 C.F.R.Section 1.1114). Governmental Entity {3 Noncommercial educational licensee g7y Other(please explain): 4b. Fee Classification CGX — Fixed Satellite Transmit/Receive Earth Station 5. Type Request Use Prior to Grant Change Station Location @ Other 6. Requested Use Prior Date

7. CityCanoga Park 8. Latitude . (dd mm ss.s h) 34 15 10.3 N 9. State CA 10. Longitude (dd mm ss.s h) 118 35 39.1 W 11. Please supply any need attachments. Attachment 1: Radiation Analysis Attachment 2: STA Request Attachment 3: 12. Description. (If the complete description does not appear in this box, please go to the end of the form to view it in its entirety.) DIRECTV Enterprises, LLC requests Special Temporary Authority for up to 30 days to provide launch and early orbit phase services for the DIRECTV 12 satellite from its Canoga Park, California earth station (call sign EO20241). 13. By checking Yes, the undersigned certifies that neither applicant nor any other party to the application is Yes 4 No 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 &quot;party to the application&quot; for these purposes. 14. Name of Person Signing 15. Title of Person Signing James Butterworth Senior Vice President 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).

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@fce.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.

‘ REQUEST FOR SPECIAL TEMPORARY AUTHORITY Call Sign: E020241 DIRECTV Enterprises, LLC ("DIRECTV") hereby requests Special Temporary Authority ("STA") for up to 30 days to provide launch and early orbit phase ("LEOP") services for the DIRECTV 12 satellite (call sign $2797), from its Canoga Park, California earth station (call sign EO20241). DIRECTV requests that the STA commence upon launch of DIRECTV 12, which is currently scheduled for December 28, 2009. During LEOP operations with DIRECTV 12, this earth station will operate with the following parameters: Telecommand e 29255.00 0r 29497.00 MHz for command uplinks «_ Emission designator: 1M30FID + Maximum transmit EIRP: 73 dBW! +« Maximum EIRP density towards the horizon:* —9.1 dBW/4 kHz Telemetry + 18302.25 and 18302.75 MHz for telemetry downlinks + Emission designator: 106KGID The LEOP operations will consist of communicating with the DIRECTV 12 spacecraft at one of two specific frequencies at the band edge as the satellite moves across the sky during initial orbit raising. Operation of the earth station will be carefully coordinated with all operators of satellites that use the same frequencies and are in the LEOP path. All operators of satellites in that path will be provided with an emergency phone number in advance where the licensee can be reached in the event that harmful interference occurs. The Flight Director for the DIRECTV 12 LEOP mission can be reached on a 24/7 basis at 310—744—9076 during the period of the requested STA. The requested STA will serve the public interest by supporting the launch of the DIRECTV 12 satellite to geostationary orbit so that it can make productive use of valuable spectrum/orbital resources as soon as possible. Accordingly, DIRECTV _ respectfully requests that the Commission grant this STA request as expeditiously as possible. Note that the maximum transmit EIRP capability of this earth station is 89.5 dBW. However, such high transmit power would not be used except to the extent necessary in the event of a spacecraft anomaly. A revised radiation hazard report is included with this STA request. Note that the EIRP density towards the horizon assumes a minimum operating elevation angle of 5° for the earth station.

RADIATION HAZARD ANALYSIS 13 meter EARTH STATION This analysis calculates the non—ionizing radiation levels due to transmission from the earth station. The Office of Engineering and Technology (OET) Bulletin, No. 65 Edition, specifies that the Maximum Permissible Exposure (MPE) limit for persons in a General Population/Uncontrolled environment to non—ionizing radiation is a power density equal to 1 milli—watt per centimeter squared averaged over a thirty minute period, and for a controlled environment is 5 milli—watts per centimetersquared averaged over a six minute period . The analysis estimates the maximum power density levels in the vicinity of the antenna for six regions: near field; far field; transition zone; near the reflector surface; between the reflector and the ground; and between the sub—reflector and the main reflector. A brief discussion for each region is given below and the results of the analysis are summarized. The attached table shows the assumptions, formulae and calculations for all cases. 1. NEAR FIELD REGION The near field (or Fresnel region) is essentially a cylindrical volume with its axis co—incident with the antenna boresight. The base of this volume is the same as the aperture of the antenna. According to OET Bulletin No. 65, its length is equal to the square of the diameter divided by four times the wavelength. Past the boundary of the Near Field region, the power density from the antenna decreases linearly with respect to increasing distance. 2. TRANSITION REGION The transition region between the near field and the far field regions will have a power density that essentially decreases inversely with increasing distance. In any case, the maximum power density in this region will not exceed the maximum value calculated for the near field region, for the purpose of evaluating potential exposure. 3. FAR FIELD REGION The far field (or Fraunhofer region) extends outwards from a distance equal to 0.6 times the square of the reflector diameter divided by the wavelength, according to OET Bulletin No. 65. Power density varies inversely as the square of the distance. The maximum value of the power density is calculated using the equation given in the Bulletin. 4. REGION BETWEEN THE MAIN REFLECTOR AND SUB—REFLECTOR Transmissions from the feed assembly are directed toward the sub—reflector surface, and are reflected back toward the main reflector. The most common feed

assemblies are waveguide flanges, horns or sub—reflectors. The energy between the sub—reflector surfaces can be calculated by determining the power density at the sub— reflector surface. This is done by taking four times the power divided by the sub— reflector surface area. 5. REGION NEAR MAIN REFLECTOR SURFACE The power density in the region near the main reflector surface can be estimated as equal to four times the power divided by the area of the main reflector surface, assuming that the illumination is uniform and that it would be possible to intercept equal amounts of energy radiated towards and reflected from the reflector surface. 6. REGION BETWEEN MAIN REFLECTOR AND GROUND The power density in the region between the main reflector and the ground can be estimated as equal to the power divided by the area of the reflector surface, assuming uniform illumination over the surface of the reflector. 7. RESULTS OF ANALYSIS The radiation hazard analyses in the following Table was performed in accordance with the discussion from the previous sections and assuming worst case operating conditions. Based on the analysis contained therein it is concluded that levels of radiation in excess of 1 mW/cm" will not exist in regions normally occupied by the public or the earth station‘s operating personnel. The transmitter will be turned off during antenna maintenance so that the FCC MPE of 5.0 mW/cm* will be complied with for those regions with close proximity to the reflector that exceed acceptable levels.

RADIATION HAZARD ANALYSIS Nomenciature Formula Value Unit INPUT PARAMETERS D = Antenna Diameter 13 meters d = Diameter of Subreflector 1.74 meters P = Max Power into Antenna 126 Watts n = Apperture Efficiency 43 % F =Frequency 29497 MHz A = Wavelength 300/F 0.0102 meters CALCULATED VALUES A = Area of Reflector pi*D*2/4 132.73 meters*A2 a = Area of Subreflector pi*d*2/4 2.38 meters®2 [ = Length of Near Field D*2/4A 4154.16 meters L = Beginning of Far Field 0.6D*2/A 9969.99 meters G = Antenna Gain @ F {n=100% max value) n{pi®D/A)®2 6933748.62 lingar Antenna Gain in dB 10*og(G) 68.41 dBi POWER DENSITY CALCULATIONS Max Power Density In Region Hazard Assessment Region Formula Value (mW/cm*2) (FCC MPE Limit=1 mW/icm*2) 1. Snf = Max Near Field Power Density 4*n*P/A 0.16 <FCC MPE Limit 2. Sff = Max Far Field Power Density G*P/(4*pi*L*2) 0.07 <FCC MPE Limit 3. Max Transition Region Power Density <= Nr Fid Region 0.16 <FCC MPE Limit 4, Near Main Reflector Surface 4*P/A 0.38 <FCC MPE Limit 5, Between Main Reflector and Subreflector 4*Pla 21.20 >FCC MPE Limit (See Text) 6. Between Main Reflector and Ground P/A 0.09 <FCC MPE Limit


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Document Modified: 2019-04-14 07:10:01
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