Attachment Grant

Grant

DECISION submitted by IB,FCC

grant

2007-09-20

This document pretains to SAT-STA-20070907-00121 for Special Temporal Authority on a Satellite Space Stations filing.

IBFS_SATSTA2007090700121_593801

Approved by OMB 3060—0678 Date & Time Filed: Sep 72007 10:59:12:123AM File Number: SAT—STA—20070907—00121 Callsign: FEDERAL COMMUNICATIONS COMMISSION APPLICATION FOR SPACE STATION SPECIAL TEMPORARY AUTHORITY FOR OFFICIAL USE ONLY APPLICANT INFORMATION Enter a description of this application to identify it on the main menu: Sirius Satellite Radio Request for 30 day STA to operate SDARS repeaters and signal boosters at trade shows 1. Applicant Name: Sirius Satellite Radio Inc. Phone Number: 212~584—5100 DBA Name: Fax Number: 212—584—5353 Street: 1221 Avenue of the Americas E~Mail: 36th Floor City: New York State: NY Country: USA Zipcode: 10020 — Attention: Mr. Patrick L. Donnelly <s6t—Sip.rooyogoytor Call Sign _ Grant T)rsmmq \”K?W\S?:,

Application of Sirius Satellite Radio Inc. for Special Temporary Authority IBFS File No. SAT—STA—20070907—00121 Special temporary authority (STA) IS GRANTED to Sirius Satellite Radio Inc. (Sirius) to operate an indoor terrestrial repeater with an Effective Isotropically Radiated Power (EIRP) of up to 200 watts (average) and up to five indoor repeaters with EIRP of up to 0.0001 watts at the International Boat Builders‘ Exhibition and Conference (IBEX) in Miami Beach, FL, from October 10—12, 2007, and at the SEMA automotive specialty products trade show in Las Vegas, NV, from October 30—November 2, 2007, according to the technical parameters specified in its application, subject to the following conditions: 1. Any actions taken as a result of this STA are solely at the applicant‘s own risk. This STA shall not prejudice the outcome ofthe final rules adopted by the Commission in IB Docket No. 95—91; Operation of the terrestrial repeaters authorized pursuant to this STA is on a non—interference Do basis with respect to all permanently authorized radiocommunication facilities. Sirius shall provide the information and follow the process set forth in paragraphs 14 and 17 in 16 FCC Red 16773 (Int‘l Bur. 2001) and 16 FCC Red 16781 (Int‘l Bur. 2001), as modified by 16 FCC Red 18481 (Int‘l Bur. 2001) and 16 FCC Red 18484 (Int‘l Bur. 2001); The terrestrial repeaters are restricted to the simultaneous retransmission ofthe complete Lo programming, and only that programming, transmitted by the satellite directly to SDARS receivers; The terrestrial repeaters shall comply with Part 1 of the Commission‘s rules, Subpart I — Procedures Implementing the National Environmental Policy Act of 1969, including the guidelines for human exposure to radio frequency electromagnetic fields as defined in Sections 1.1307(b) and 1.1310 of the Commission‘s rules; The out—of—band emissions of the terrestrial repeaters shall be limited to 75+log(EIRP) dB less than the transmitter EIRP; Sirius will maintain full ownership and operational control of the terrestrial repeaters; Sirius will immediately shut down the terrestrial repeaters upon a complaint of interference, upon direction from the Comumission, or upon finding that the repeaters have not been properlyinstalled; This STA is effective October 3, 2007, and will expire in 30 days thereafter, or on the date on which permanent rules governing repeater operations become effective, whichever occurs first. This authorization is not one relating to an "activity of a continuing nature" for purposes of Section 1.62 of the Commission‘s rules and Section 558(c) of the Administrative Procedure Act. Continuation of operations beyondthe_termthis utho %ggn will require: prior affirmative authorization by the FCC. ; * % — JTéqzc CHQ" Ofendtions

2. Contact Name: Mr. Patrick L. Donnelly Phone Number: 212—584—5100 Company: Sirius Satellite Radio Inc. Fax Number: 212~584—5353 Street: 1221 Avenue of the Americas E—Mail: City: New York State: NY Country: USA Zipcode: 10020 — Attention: Relationship: Same (If yourapplication 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 JID 4a. 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). C Governmental Entity C Noncommercial educational licensee C) Other(please explain): 4b. Fee Classification CXW — Space Station (Non—Geostationary) 5. Type Request «3 Change Station Location 3 Extend Expiration Date i Other 6. Temporary Orbit Location 7. Requested Extended Expiration Date

8. 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.) Sirius Satellite Radio requests Special Temporary Authority for 30 days to operate terrestrial repeaters and signal boosters at trade shows between October 8, 2007 and November 2, 2007. 9. By checking Yes, the undersigned certifies that neither applicant nor any other party to the application is subject @ Yes 3 No 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 ofa controlled substance. See 47 CFR 1.2002(b) for the meaning of &quot;party to the application&quot; for these purposes. 10. Name of Person Signing 11. Title of Person Signing Patrick L. Donnelly Exec. VP, GC, and Sec‘y 12. Please supply any need attachments. Attachment 1: Attachment, Exhibits Aftachment 2: Attachment 3: 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 forthis collection of informationis 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 jboley@fee.gov. PLEASE DO NOT SEND COMPLETED FORMS TO THIS ADDRESS. Remember — You are not required to respond to a collection ofinformation sponsored by the Federal government, and the government may not conduct or sponsorthis collection, unless it displays a currently valid OMB control number or if wefail to provide you with this notice. This collection has beenassigned 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.

Attachment Sirius Satellite Radio Inc. ("Sirius"), pursuant to 47 C.F.R. § 25.120,‘ hereby requests Special Temporary Authority ("STA") for 30 days to operate in its licensed frequency band (2320—2332.5 MHz) (1) low—power satellite DARS repeaters with an Effective Isotropically Radiated Power ("EIRP") of 200 watts; and (2) signal boosters with an EIRP of 0.0001 watts that have previously been approved for use in retail stores, These low—power repeaters and signal boosters will be utilized at various trade shows on various dates between and including October 8, 2007 and November 2, 2007. Sirius intends to operate the repeaters and signal boosters independently — i.e., Sirius will not operate them in conjunction with XM Radio, Inc., the other satellite DARS licensee. The repeaters and boosters will be used by Sirius to carry out equipment and service demonstrations at trade shows across the United States for periods not to exceed six days (including two days prior to the official start of each trade show for set—up and testing activities). Due to blockage from walls and ceilings, it is often difficult to provide quality reception of SDARS satellite and even terrestrial signals inside of trade showvenues, which often do not have line—of—sight views to receive Sirius® signal. These difficulties with providing coverage inside the venues require radios to be displayed with hard wire connections, which limits the locations within a trade show venue that Sirius can set up its displays, creating difficulties for trade show organizers and Sirius. Because trade show venues typically consist of a large, often multi—level space, Sirius anticipates that the use of both a repeater and one or more (but fewer than five) strategically placed boosters will be necessary to ensure full coverage of each trade show. Accordingly, grant of the requested STA to use these repeaters for these limited periods will serve the public interest. Technical Information. In Exhibit A, Sirius provides a list of technical parameters, locations, and dates for the trade showrepeaters it seeks to operate pursuant to this STA. Sirius has included the following information: (1) event; (2) event date; (3) event location (specifying the center longitude and latitude of each trade show venue); (4) market; (5) antenna type: (6) antenna beamwidth; (7) total EIRP; and (8) approximate maximum height Above Ground Level (AGL). Sirius will operate its signal booster(s) at the same events, dates, locations, and markets specified in Exhibit A. Exhibit B lists the technical parameters for the signal boosters, which are identical to those previously approved by the Commission foruse in retail stores." Specifically, Sirius has ! Concurrent with this STA request, Sirius is filing an application for a 180—day STA to operate repeaters and signal boosters at trade shows from November 7, 2007 to February 18, 2008. 2 See Sirius Satellite Radio Inc. Requestfor Special Temporary Authority to Operate In— Store Signal Booasters in the Satellite Digital Audio Radio Service, File No. SAT—STA— 2003041 1—00075 (grant stamp with conditions issued June 26, 2003) ("2003 In—Store Booster Application"). In the 2003 application, Sirius also provided an interference analysis for the signal boosters that are the subject of this application. See id., Exhibit C. That interference analysis is incorporated by reference herein, as permitted by 47 C.F.R. § 1.10009(c)(2). On June 5, 2003, Sirius further supplemented the application with a sample link budget for the signal boosters. See Letter from Robert D. Briskman to Marlene H. Dortch, Secretary, FCC, Re: Sirius

Ms. Marlene H. Dortch September 7, 2007 Page 2 included the following information: (1) antenna type; (2) antenna beamwidth; (3) total EIRP; and (4) approximate maximum height Above Ground Level (CAGL"). Exhibits C and D provide RF exposure analyses for each individual trade show, and demonstrate that any human radiofrequency exposure that might occur is well belowacceptable limits. Interference Considerations. Sirius does not anticipate that the repeaters and boosters at these trade shows will cause harmful interference to other radio services. Because Sirius has exclusive use of its licensed frequency band," there is no potential for in—band interference. Moreover, the repeaters will operate at 200 watts, well belowthe threshold EIRP of 2000 watts that Wireless Communications Service ("WCS") licensees have identified as acceptable to avoid any interference with their services. Sirius has also previously demonstrated that the proposed boosters will not cause adjacent band interference to WCS operations." In addition, the repeaters and boosters will only be used for a limited time, further eliminating any opportunity for interference. Therefore, Sirius does not anticipate that these repeaters and boosters will cause blanketing interference to any WCS receivers. Ownership and Control ofRepeaters. Sirius will own each repeater and booster installed at a given venue and will retain full operational control of these repeaters and boosters. Sirius will also be responsible for installation of each repeater and/or booster. Public Interest Considerations. Prompt grant of this STA will promote the continued success of satellite radio and thereby serve the public interest. The demand for SDARS radios by the public has continued to increase over time. Accordingly, Sirius has begun attending trade shows and conventions where it provides demonstrations ofits equipment to consumers. Without repeaters and boosters to overcome signal blockage within the venues, however, Sirius cannot undertake real—time demonstrations ofits equipment, especially demonstrations of the full mobility of SDARS service. These repeaters and boosters will provide clear signal reception within these venues for these demonstrations, and will eliminate any need for a hard wire connection. Sirius understands that its operation of these repeaters and boosters under STA is on a secondary, non—interference basis. While Sirius does not anticipate any interference, should interference occur, it will cease operation of the interfering repeater and/or booster until such interference can be eliminated. (Continued . .) Satellite Radio Inc. Request for STA to Operate In—Store SDARS Signal Boosters, File No. SAT— STA—20030411—00075 (filed June 5, 2003). The link budget is also incorporated by reference herein. 3 47 C.F.R. §25.202(a)(6) (stating the 2320—2345 MHz band is allocated exclusively for SDARS). * 2003 In—Store Booster Application at 4 and Exhibit C.

Ms. Marlene H. Dortch September 7, 2007 Page 3 Certifications. Sitius acknowledges that the conditions imposed in the 2001 Order granting Sirius‘ request for STA to operate terrestrial repeaters® will continue to apply to any repeaters authorized as a result of this application. Sirius further certifies that its operation of signal boosters at trade shows will comply, as applicable, with the "Micro—Repeater STA Conditions" that the Commission imposed on Sirius in granting the June 26, 2003 STA to operate 5,000 in— store signal boosters. Specifically, Sirius certifies the following: (1) Sirius will operate the repeaters and trade showsignal boosters at its ownrisk, and such operation shall not prejudice the outcome of the final rules adopted by the Commission in GEN Docket 95—91; (2) Sirius will operate the repeaters and trade showsignal boosters on a non—interference basis with respect to all permanently authorized radiocommunication facilities; (3) The repeaters and trade show signal boosters will be restricted to the simultaneous retransmission of the complete programming, and only that programming, transmitted by the satellite directly to SDARS receivers; (4) Where applicable, coordination of the repeaters and trade showsignal boosters will be completed with all affected Administrations prior to operation, in accordance with all applicable international agreements including those with Canada and Mexico; (5) The repeaters and trade show signal boosters will comply with Part 17 of the Commission‘s rules — Construction, Marking, and Lighting of Antenna Structures:; (6) The repeaters and trade show signal boosters will comply with Part 1 ofthe Commission‘s rules, Subpart I — Procedures Implementing the National Environmental Policy Act of 1969, including the guidelines for human exposure to radio frequency electromagnetic fields as defined in Sections 1.1307(b) and 1.1310 of the Commission‘s rules; (7) The out—of—band emissions of the repeaters and trade showsignal boosters will be limited to 75+log (EIRP) dB less than the transmitter EIRP; (8) Sirius will operate the repeaters and trade showsignal boosters according to the technical parameters provided in this application: (9) Sirius will maintain full ownership and operational control of each repeater and trade show signal booster; and Sirius Satellite Radio Inc. Application for Special Temporary Authorityto Operate Satellite Digital Audio Radio Service Complementary Terrestrial Repeaters, Order and Authorization, File No. SAT—STA—20010724—00064, DA 01—2171 (Sept. 17. 2001).

Ms. Marlene H. Dortch September 7, 2007 Page 4 (10) Sirius will immediately shut down any repeater and any, or all, trade show signal boosters upon a complaint of interference, upon direction from the Commission, or upon finding that a repeater or trade show signal booster has not been properly installed.

exaerra Sirius Trade Shows / Events Location ° No c Of Setors orse Antornanenna TIype AM@mS onemation Downtit h. Longtude 9 Lattude y AntennaATC!72 Height (let 000(420 i

EXHIBIT B Attached is the following information for each of the trade showsignal boosters Sirius seeks to operate pursuant to this STA. (1) antenna type; (2) antenna beamwidth: (3) total EIRP; and (4) approximate height Above Ground Level (AGL) City Antenna Type Antenna EIRP Total in Height AGL Beamwidth Watts Various Antenna Specialists 75 degrees 0.0001 <50 feet XMSSRO23 WR The transmitted carriers have a center frequency and frequencystability identical to the received SDARS satellite or terrestrial carriers. Frequency accuracyis controlled by the satellite or terrestrial repeater and not by the booster.

EXHIBIT C

RF Exposure Analysis International BoatBuilders‘ Exhibition & Conference (IBEX) 2007 October 10—12, 2007 Miami Beach Convention Center, Miami Beach, FL This technical addendum is to support the STA request for IBEX 2007. This event is being held at the Miami Beach Convention Center in Miami Beach, FL. A low—power transmitter and signal booster will be used to provide coverage at the event. 1. RF Exposure Analysis for Low—Power Transmitter The transmitter set up for the show is ilustrated in the figures below: HALL B Tx Antenna HALLC VSAT and GPS © on the roof Transmitter Figure 1, Diagram of Main hall

Floor to Tx Floor to Tx Antenna antenna= 30ft | ceiling = 35ft Figure 2. Main Exhibit hall To establish the RF exposure environment for this request the following process has been used to establish that there is no general population exposure over the allowed limit: 1. The location of the antenna and the transmission parameters have been established. The antenna is placed 30 feet above the show floor as seen in Figure 2. A 20 watt (average), 90 watt (peak) powertransmitter is used. Together with the assumed length and type of cable feeding the antenna (which is omni directional) and the type and gain of the antenna used, this leads to an effective isotropically radiated power (EIRP) of 200 watts (average) and 900 watts (peak). This calculation is summarized in Tablel. The transmitter operates at 2.32625 GHz which is the carrier frequencyallocated to the Sirius repeater network. At this frequency the FCC has established a limit of 1 mW/square centimeter for general population exposure (OET 65). Using the calculation methods described in OET 65 and the EIRP‘s derived as described in "1" a calculation is made of the power density at various distances from the antenna for both the average and peak powers involved. The distance of 23 feet was chosen as the minimum distance criteria for exposure by taking the height of the antenna (30 feet) and subtracting a 7 foot allowance for the height of any individuals who may be present on the show floor. This distance represents the closest point that a member of the general population could approach this repeater antenna. Table 2 summarizes the results of the normal calculation (using the formula Power Density=EIRP/(4*II*R*2) from OET 653) and also a more conservative formula which takes into account reflection (the formula PD= 2.56*EIRP/(4*II*R*2) ) also from OET 65. In order to provide a comprehensive Sirius Satellite Radio bo

view, values are included separately for the regular case (average and peak power based ) and for the reflective case (peak power based). Summary Using a very conservative approach the calculated RF exposure levels from the proposed installation are well within the stated limits defined in OET 65. Several worst case assumptions were made as follows: 1. No allowance was made for the significant reduction in power density that will occur due to the attenuation of the antenna pattern at the location immediately under the antenna, the location to which the minimum distance of23 feet applies. No allowance was made in the case of peak level calculations for the fact that these levels occur a very small fraction of the overall time of transmission. The maximum transmitter power of 20 watts was used although in practice Sirius has determined that the transmitter will be operated at a level at or below10 watts which will provide adequate margin for the demonstrations involved. There is no access to the ceiling area where the antenna is mounted except with a construction lift. The highest level of exposure, involving the potential for additive reflection and peak level EIRP was used as the exposure criteria. Table 1. Transmit chain loss budget Average |Average |Peak Peak (waits) (dBW) (watts) (dBW) Transmitter output power 20 13.0 90 198.5 Cable Loss (db) 2 2 Antenna gain dBi (max) 12 12 EIRP (max) 200.0 23.0 900.0 29.5 The effective isotropic radiated power (EIRP) is calculated by taking the transmitter output power, subtracting the cable loss and adding the antenna gain. The peak power is determined by applying the peak to average factor of the OFDM waveform to the average power of the transmitter. This peak level occurs less than 1/1000"" of the time for the Sirius waveform for this transmitter type. Table 2. Calculations for power density Power Density = EIRP/(4piR*2) (Equation 4 page 19 of OET 65) Power Density adjusted for reflection = 2.56*Power Density (Equation 7, page 21 of OET 65) Sirius Satellite Radio u>

As can be seen from this table, even under very conservative transmission assumptions, the general population exposure limits are not exceeded at the worst case location. Power Radial Density Power density Peak power Distance (Average) }(Peak) density with from Antenna|mW/square |mW/square |2.56 multiplier (Feet) om cm (Max reflection) 23 0.03343 0.15043 0.38510 28 0.02256 0.10150 0.25984, 33 0.01624 0.07307, 0.18707) 38 0.01225 0.05511 0.14108 43 0.00956 0.04304 0.11018 48 0.00768 0.03454, 0.08842 53 0.00630 0.02833 0.07252 58 0.00526 0.02366 0.06056 63 0.00446 0.02005 0.05133 68 0.00382 0.01721 0.04406 73 0.00332 0.01493 0.03823 78 0.00291 0.01308 0.03348 83 0.00257 0.01155 0.02957 88 0.00228 0.01028 0.02631 [ 93| 0.00204 0.00920 0.02355 98 0.00184 0.00829 0.02121 103 0.00167 9.00750 0.01920 108 0.00152 0.00682 0.01747 113 0.00138 0.00623 0.01595 118 0.00127 0.00572 0.01463 123 0.00117 0.00526 0.01347 [__ 128) ___0.00108 0.00486 0.01243 133 0.00100 0.00450 0.01152 138 0.00093 0.00418 0.01070 143 0.00086, 0.00389; 0.00996 148 0.00081 0.00363 0.00930 153 0.00076 0.00340 0.00870 Sirius Satellite Radio

2. RF Exposure Analysis for Signal Booster The set up of the signal booster in the meeting room is illustrated in the figures below: T Rx Cable and in— antenna line amplifier on roof Figure 3. Diagram of meeting rooms Floor to ceiling = 25 ft Floor to Tx . antenna = 18 ft Figure 4. Meeting room To establish the RF exposure environment for the signal boosters the following process has been used to confirm that there is no general population exposure over the allowed limit: 1. The transmit antenna is placed 18 feet above the meeting floor as seen in Figure 4. A 0.0001 Watt EIRP signal booster identical to boosters that have previously been approved for retail stores is used. The booster operates at 2320—2332.5MHz which is the carrier frequency allocated to the Sirius Sirius Satellite Radio 5

repeater network. At this frequency the FCC has established a limit of 1 mW/square centimeter for general population exposure (OET 65). 2. Using the calculation methods described in OET 65 and the EIRP‘s described in "1" a calculation is made of the power density at various distances from the transmit antenna, The distance of 11 feet was chosen as the minimum distance criteria for exposure by taking the height of the antenna (18 feet) and subtracting a 7 foot allowance for the height of any individuals who may be present on the show floor. This distance represents the closest point that a member of the general population could approach this transmit antenna. Table 4 summarizes the results of the normal calculation (using the formula Power Density=EIRP/(4*II*RA2) from OET 65) and also a more conservative formula which takes into account reflection (the formula PD= 2.56*EIRPM4*II*RA2) ) also from OET 65. In order to provide a comprehensive view, values are included separately for the regular case and for the reflective case. Summary Using a very conservative approach the calculated RF exposure levels from the proposed installation are well within the stated limits defined in OET 65. Several worst case assumptions were made as follows: 1. No allowance was made for the significant reduction in power density that will occur due to the attenuation beyond the 3 dB antenna beamwidth. 2. The highest level of exposure, involving the potential for additive reflection was used as the exposure criteria. Table 3. Signal Booster specifications Antenna Type Antenna Beamwidth Total EIRP in Watts Antenna Specialists XMSSRO23WR 75 degrees 0.0001 Table 4. Calculations for power density e Power Density = EIRP/(4piRA2) (Equation 4 page 19 of OET 65) e Power Density adjusted for reflection = 2.56*Power Density (Equation 7, page 21 of OET 65) As can be seen from this table, even under very conservative transmission assumptions, the general population exposure limits are not exceeded at the worst case location. Sirius Satellite Radio 6

Power Density Radial Power with 2.56 Distance Density multiplier from Antenna\mW/square |(Max (Feet) cm reflection) 11| 0.000000073] 0.00000019 12| 0.000000061) __0.00000016 13} 0.000000052] 0.00000013 14} 0.000000045| 0.00000012 15) 0.000000039] ___0.00000010 16) 8.000000035)___0.00000008 17) 0.000000031}___0.00000008 18} 0.000000027| 0.00000007 19 0.000000024) 0.00000006 20) 0.000000022) 0.00000006 21| 0.000000020] 0.00000005 22| 0.000000018]__0.00000005 23} 0.000000017} 0.00000004 24) 0.000000015) 0.00000004; 25) 0.000000014) 0.00000004 26| 0.000000013] 0.00000003 27) 0.000000012) __0.00000003 28) 0.000000011} 0.00000003 29) 0.000000011| __0.00000003 30| 0.000000010|___0.00000003 31| 0.000000008| 0.00000002 32) 0.000000008] 0.00000002 33) 0.000000008] 0.00000002, 34| 0.000000008) 0.00000002 35| 0.000000007} 0.00000002 Sirius Satellite Radio

EXHIBIT D

RF Exposure Analysis 2007 SEMA Show October 30 — November 2, 2007 Las Vegas Convention Center Las Vegas, NV This technical addendum is to support the STA request for 2007 SEMA Show. This event is being held at the Las Vegas Convention Center in Las Vegas, NV. Two low—power transmitters and a signal booster will be used to provide coverage at the event.

RF Exposure Analysis for Low—Power Transmitter The transmitters set up for the show are iflustrated in the figures below: Transmitter x s — VSAT and GPS on roof Tx Antenna PARADISE Roap Floor to Tx Floor to antenna = 35ft ceiling = 40ft Figure 2. North Main Exhibit hall Sirius Satellite Radio 2

Transmitter VSAT and GPS antenna on roof Tx Antenna Floor to Tx C Floor to antenna = 35ft "1 ceiling = 40ft Figure 4.Central Main Exhibit hall Sirius Satellite Radio ue

To establish the RF exposure environment for this request the following process has been used to establish that there is no general population exposure over the allowed limit: 1. The locations of the antenna and the transmission parameters have been established. The antennas in both locations are placed 35 feet above the show floor as seen in Figure 2 and Figure 4. A 20 watt (average), 90 watt (peak) power transmitter is used. Together with the assumed length and type of cable feeding the antenna (which is omni directional) and the type and gain of the antenna used, this leads to an effective isotropically radiated power (EIRP) of 200 watts (average) and 900 watts (peak). This calculation is summarized in Table 1. The transmitter operates at 2.32625 GHz which is the carrier frequency allocated to the Sirius repeater network, At this frequency the FCC has established a limit of 1 mW/square centimeter for general population exposure (OET 65). 2. Using the calculation methods described in OET 65 and the EIRP‘s derived as described in "1" a calculation is made of the power density at various distances from the antenna for both the average and peak powers involved. The distance of 28 feet was chosen as the minimum distance criteria for exposure by taking the height of the antenna (35 feet) and subtracting a 7 foot allowance for the height of any individuals who may be present on the show floor. This distance represents the closest point that a member of the general population could approach this repeater antenna. Table 2 summarizes the results of the normal calculation (using the formula Power Density=EIRP/(4*II*RA2) from OET 65) and also a more conservative formula which takes into account reflection (the formula PD= 2.56*EIRP/(4*II*R*2) ) also from OET 65. In order to provide a comprehensive view, values are included separately for the regular case (average and peak power based ) and for the reflective case (peak power based). Sirius Satellite Radio 4

Summary Using a very conservative approach the calculated RF exposure levels from the proposed installation are well within the stated limits defined in OET 65. Several worst case assumptions were made as follows: 1. No allowance was made for the significant reduction in power density that will occur due to the attenuation of the antenna pattern at the location immediately under the antenna, the location to which the minimum distance of 28 feet applies. No allowance was made in the case of peak level calculations for the fact that these levels occurs a very small fraction of the overall time of transmission. The maximum transmitter power of 20 watts was used although in practice Sirius o has determined that the transmitter will be operated at a level at or below 10 watts which will provide adequate margin for the demonstrations involved. Access to the ceiling area where the antenna is mounted is restricted only to convention electricians and installation crews. The highest level of exposure, involving the potential for additive reflection and peak level EIRP was used as the exposure criteria. Table 1. Transmit chain loss budget Average |Average |Peak Peak (watts) (dBW) (watts) (dBW) Transmitter output power 20 13.0 90 19.5 Cable Loss (db) 2 2 Antenna gain dBi (max) 12 12 EIRP (max) 200.0 23.0 200.0 29.5 The effective isotropic radiated power (EIRP) is calculated by taking the transmitter output power, subtracting the cable loss and adding the antenna gain. The peak power is determined by applying the peak to average factor of the OFDM waveform to the average power of the transmitter. This peak level occur less than 1/1000" of the time for the Sirius waveform forthis transmitter type. Sirius Satellite Radio 5

Table 2. Calculations for power density e Power Density = EIRP/(4piRA2) (Equation 4 page 19 of OET 65) e Power Density adjusted for reflection = 2.56*Power Density (Equation 7, page 21 of OET 65) As can be seen from this table, even under very conservative transmission assumptions, the general population exposure limits are not exceeded at the worst case location. Radial Power Power Peak power Distance Density density density with from (Average) (Peak) 2.56 multiplier Antenna mWi/square mWi/square (Max (Feet) cm cm reflection) 28 0.02256 0.10150 0.25984 33 0.01624 0.07307 0.18707 38 0.01225 0.05511 0.14108 43 0.00956 0.04304 0.11018 48 0.00768 0.03454 0.08842 53 0.00630 0.02833 0.07252 58 0.00526 0.02366 0.06056 63 0.00446 0.02005 0.05133 68 0.00382 0.01721 0.04406 73 0.00332 0.01493 0.03823 78 0.00291 0.01308 0.03348 83 0.00257 0.01155 0.02957 88 0.00228 0.01028 0.02631 93 0.00204 0.00920 0.02355 98 0.00184 0.00829 0.02121 103 0.00167 0.00750 0.01920 108 0.00152 0.00682 0.01747 113 0.00138 0.00623 0.01595 118 0.00127 0.00572 0.01463 123 0.00117 0.00526 0.01347 128 0.00108 0.00486 0.01243 133 0.00100 0.00450 0.01152 138 0.00093 0.00418 0.01070 143 0.00086 0.00389 0.00996 148 0.00081 0.00363 0.00930 153 0.00076 0.00340 0.00870 158 0.00071 0.00319 0.00816 Sirius Satellite Radio

2. RF Exposure Analysis for Signal Booster The set up of the signal booster in the meeting roomis illustrated in the figures below: Rx antenna on Cable and in—line roof ~—>. amplifier Tx antenna M 1i! tnet l h: 9 CRoentro| 4 C4 Entrance o8 Fioor to ceiling = 15 ft Floor to Tx antenna = Figure 8. Meeting room To establish the RF exposure environment for the signal boosters the following process has been used to confirm that there is no general population exposure over the allowed limit: Sirius Satellite Radio

1. The transmit antenna is placed 12 feet above the meeting floor as seen in Figure 6. A 0.0001 Watt EIRP signal booster identical to boosters that have previously been approved for retail stores is used. The booster operates at 2320—2332.5MHz which is the carrier frequency allocated to the Sirius repeater network. At this frequency the FCC has established a limit of 1 m W/square centimeter for general population exposure (OET 65). Using the calculation methods described in OET 65 and the EIRP‘s described in "I" a calculation is made of the power density at various distances from the transmit antenna. The distance of 5 feet was chosen as the minimum distance criteria for exposure by taking the height of the antenna (12 feet) and subtracting a 7 foot allowance for the height of any individuals who may be present on the show floor, This distance represents the closest point that a member of the general population could approach this transmit antenna. Table 5 summarizes the results of the normal calculation (using the formula Power Density=EIRP/(4*II*RA2) from OET 65) and also a more conservative formula which takes into account reflection (the formula PD= 2.56*EIRP/(4*II*R*2) ) also from OET 65. In order to provide a comprehensive view, values are included separately for the regular case and for the reflective case. Summary Using a very conservative approach the calculated RF exposure levels from the proposed installation are well within the stated limits defined in OET 65. Several worst case assumptions were made as follows: No allowance was made for the significant reduction in power density that will occur due to the attenuation beyond the 3 dB antenna beamwidth. The highest level of exposure, involving the potential for additive reflection was used as the exposure criteria. Table 5. Signal Booster specifications Antenna Type Antenna Beamwidth Total EIRP in Watts Antenna Specialists XMSSRO23WR 75 degrees 0.0001 Table 6. Calculations for power density Power Density = EIRP/(4piR*2) (Equation 4 page 19 of OET 65) & Power Density adjusted for reflection = 2.56*Power Density (Equation 7. page 21 of OET 65) Sirius Satellite Radio 8

As can be seen from this table, even under very conservative transmission assumptions, the general population exposure limits are not exceeded at the worst case location. Power Radial Density with Distance Power 2.56 from Density multiplier Antenna mWisquare (Max (Feet) cm reflection) 5 0.000000354 0.00000081 6 0.000000246 0.00000063 7 0.000000180 0.00000046 8 0.000000138 0.00000035 9 0.000000109 0.00000028 10 0.000000088 0.00000023 11 0.000000073 0.00000019 12 0.000000061 0.00000016 13 0.000000052 0.00000013 14 0.000000045 0.00000012 15 0.000000039 0.00000010 16 0000000035 0.00000009 17 0.000000031 0.00000008 18 0.000000027 0.00000007 19 0000000024 0.00000006 20 0.000000022 0.00000006 21 0.000000020 0.00000005 22 0.000000018 0.00000005 23 0.000000017 0.00000004 24 0.000000015 0.00000004 25 0.000000014 0.00000004 26 0.000000013 0.00000003 27 0.000000012 0.00000003 28 0.000000011 0.00000003 29 0.000000011 0.00000003 30 0.000000010 0.00000003 31 0.000000008 0.00000002 32 0.000000009 0.00000002 33 0.000000008 0.00000002 34 0.000000008 0.00000002 Sirius Satellite Radio


Document Created: 2007-09-20 15:07:26
Document Modified: 2007-09-20 15:07:26
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