Attachment pages 1 thru 30.pdf

This document pretains to SAT-AMD-19960916-00114 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD1996091600114_1162677

Before the FEDERAL COMMUNICATIONS COMMISSION Washington, D.C. 20554 In re Application of MOBILE COMMUNICATIONS HOLDINGS, INC. For Authority to Construct, Launch and Operate ELLIPSO‘Y, An Elliptical Low Earth Orbit Mobile Satellite System in the 1610—1626.5 MHz and 2483 5—2500 MHz Bands AMENDMENT TO ELLIPSO® SATELLITE SYSTEM APPLICATION MOBILE COMMUNICATIONS HOLDINGS, INC. 1120 19th Street, N.W. Washington, D.C, 20036 (202) 466—4488 Of Counsel: Jill Abeshouse Stern Shaw, Pittman, Potts & Trowbridge 2300 N Street, N.W. Washington, D.C. 20037 (202) 663—8380 September 16, 1996

hsms / «*~p «GPp RECEIVED NoY 13 199 Before the FEDERAL COMMUNICATIONS COMMISSION geogaa, commUNiapays COnmissicn Washington, D.C. 20554 OFFICE OF SECRETARY In re Application of ) ) MOBILE COMMUNICATIONS ) File Nos. 11—DSS—P—91(6); HOLDINGS, INC. ) 18—DSS—P—91 (18); ) 11—SAT—LA—95; ) 12—SAT—AMEND—95 For Authority to Construct, Launch and Operate ) ELLIPSO‘Y, An Elliptical Low Earth Orbit Mobile ) Satellite System in the 1610—1626.5 MHz and ) 2483.5—2500 MHz Bands ) SUPPLEMENT TO ELLIPSOY" SATELLITE SYSTEM APPLICATION MOBILE COMMUNICATIONS HOLDINGS, INC. 1120 19th Street, NW. Suite 480 Washington, D.C. 20036 (202) 466—4488 ‘ Of Counsel: Jill Abeshouse Stern Shaw, Pittman, Potts & Trowbridge 2300 N Street, NW. Washington, D.C. 20037—1128 (202) 663—8380 November 13, 1996

SUPPLEMENT TO APPLICATION Mobile Communications Holdings, Inc. (MCHI) hereby provides supplemental informa— tion for association with its application for licensing of the ELLIPSO* satellite system. This in— formation includes supplemental financial materials evidencing the current availability of sufficient funds for construction, launch and first—year operation of the ELLIPSO‘ system. These finan— cial materials, which include letters of commitment from MCHI‘s investors and financiers, are sub— mitted in lieu of the underlying business agreéments previously submitted to the Commission on September 16, 1996 with a request for confidentiality. Submission of the supplemental financial information was expressly authorized in an October 29, 1996 letter from International Bureau Chief Donald Gips which confirmed MCHI‘s understanding tl;at submission of proprietary busi— ness agreements is not mandatory under the Commission‘s Big LEO rules. In addition, MCHI provides herewith updated technical information about the ELLIPSO* system which reflects minor changes required to conform to the WRC—95 feeder link allocations and to facilitate sharing in the Big LEO frequency bands. This supplemental filing includes the following items. 1. Letterof commitment from Vula Communications (Pty) Limited confirming its irrevo— cable commitment to pay MCHI the amount of US $350 million for certain interna— tional distribution and other rights pursuant to a September 12, 1996 agreement between the parties. The letter summarizes the material terms of the agreement and confirms Vula‘s capability to perform its financial obligations under the agreement. In its September 16, 1996 amendment, MCHI identified the current members of the Vula

consortium which include substantial and well—respected organizations in South Affrica. A letter from Ernst & Young confirming the consortium membership is also attached. Additional details about these organizations are included. See Attachment 1. Letter of commitment from P.T.Tigamutiara Buanakhatulistiwa (TMBK), a member of the Mertju Buana Group of Indonesia, signed by its President Director confirming its irrevocable commitment to provide vendor financing in the amount of US$300 million to provide the launch and associated launch services for seventeen ELLIPSO‘ satel— lites pursuant to an agreement between the parties dated September 4, 1996. The let— ter of commitment summarizes the material terms of the agreement and confirms ‘TMBK‘s capability to perform its financial obligations under the agreement. The Mertju Buana Group is a major, privately—owned Indonesian conglomerate with inter— ests in mahy sectors including mining, real estate, food processing, and automobiles (local partner of General Motors in Indonesia). The letter is also signed by the State Design Office Yuzhnoye, a party to the September 4, 1996 agreement and developer of the Cyclone launch vehicle, which has committed to provide alternative sourcing on . the same terms if TMBK is unable to provide the required launch capability within the time period required to meet implementation milestones. See Attachment 2. Letter of commitment from Artoc and excerpt from agreement between MCHI and Artoc confirming Artoc‘s irrevocable commitment to pay MCHI the amount of US$300 million for certain international distribution rights. A certification from

Artoc‘s auditors confirming Artoc‘s ability to meet its financial obligations under the agreement is also attached. See Attachment 3. November 16, 1994 letter from Arianespace confirming the availability of a credit commitment of US$45 million from Ariane, representing 15% of the financing re— quired to provide launch services for two dedicated Ariane 5 launches. A launch serv— ices agreement was fully negotiated by the parties, and this agreement and a related credit agreement have been on hold since the FCC‘s January 31, 1995 decision to defer MCHI‘s application. See Attachment 4. Letter of commitment from Spectrum Astro, Inc. confirming its commitment to pro— _ vide vendor financing in the amount of $206 million to MCHI for construction of the sixteen first—generation ELLIP SOTM.satellites by Spectrum Astro pursuant to an agree— ment between the parties dated June 26, 1996. The letter summarizes the material terms of the vendor financing agreement and confirms Spectrum Astro‘s capability to meet its financial obligations under the agreement. See Attachment 5. Information on ELLIPSO‘s global pricing structure demonstrating that ELLIPSO‘ will provide fixed and mobile services at costs comparable to terrestrial services: $0.12 per minute for fixed service and $0.50—$0.24 per minute for mobile service. See At— tachment 6. Since ELLIPSO‘s first filing in November 1990, as the first Big LEO ap— plicant, its innovative design has consistently provided for lower costs that are still substantially less than the service costs projected by the three licensed Big LEO

systems. MCHI‘s long—standing and vigorous objections to the Commission‘s inequita— ble exclusion of ELLIPSO* from the marketplace need not be restated here. 7. Revised tables and figures reflecting certain minor revisions in technical information for the ELLIPSO‘ system, including revised feeder link calculations, to conform to the Big LEO feeder link allocations adopted at the 1995 World Radiocommunication Conference and to facilitate sharing of the Big LEO frequencies. See Attachment 7. As noted in MCHI‘s September 16, 1996 amendment, the WRC—95 feeder link alloca— tion required MCHI to reduce its proposed feeder link spectrum requirements from 300 MHz in each direction to 200 MHz in each direction. MCHI has conclusively demonstrated its qualifications ——— financial, technical and legal ——— to be a Commission licensee and urges the Commission to move forward expeditiously with proc— essing and grant of the ELLIPSO‘ license application. From a public interest standpoint, grant of MCHI‘s application will authorize much—needed competition in the Big LEO marketplace and provide consumers with an innovative and lower—cost communications alternative. Respectfully submitted, MOBILE COMMUNICATIONS HOLDING C. C~O] T —_—~ By: m _— w77 Dr. David Castiel President and Chief Executive Officer Date: November 13, 1996

TECHNICAL EXHIBIT In this Technical Exhibit, MCHI provides revised tables and figures reflecting minor changes in the ELLIPSO‘ system to conform to the Big LEO feeder link allocations and other international requirements adopted at WRC—95, and to facilitate sharing of the Big LEO frequencies. In its September 16, 1996 amendment, MCHI reconfirmed its preferred feeder link fre— quencies in order to conform to the Big LEO feeder link allocations adopted at WRC—95. In MCHI‘s November 1994 filing, it specified the use of 300 MHz of feeder link spectrum in each di— rection (a total of 600 MHz). Due to limitations on the availability of Big LEO feeder link spec— trum as a result of WRC—95, MCHI has reduced its feeder link requirements to specify a minimum of 200 MHz in each direction in the 6875—7075 MHz (downlink) and 15.45—15.65 GHz (uplink) bands (a total of 400 MHz). In addition, MCHI has simplified ELLIPSO‘s feeder link antennas from an array of two sector and one earth coverage antennas to a single earth coverage antenna in each feeder link direction. MCHI has also changed its user link channelizing scheme to one using multiples of 2.5 MHz in order to facilitate spectrum sharing with the other Big LEO systems. Revised figures and tables are attached hereto reflecting these minor changes and should be substituted in lieu of previously submitted figures and tables. Except as revised in the attached technical materials, the characteristics and specifications of the ELLIPSO‘* system are as stated in MCHI‘s November 1994 amendment. e Figure 1 shows a numbered layout of the 61 ELLIPSO‘ user beams. Seventy feeder link slots carry user signals to and from the satellite as shown in Figures 2 and 3. * Telemetry, Tracking, and command link will use spectrum within the uplink and down— link feeder link spectrum, as shown in Figures 2 and 3. Command and telemetry links will use QPSK modulation having emission designators of $KOG1D in C—band and 4KOGID in Ku—band. ELLIPSO®" Command and Telemetry facilities will be collo— cated with one of the ELLIPSO* Ground Control Station (GCS) sites in CONUS and, for system robustness, with one or more GCSs overseas. e Figures 4 and 5 illustrate the satellite forward and return path payload configurations and replace Figures A—1 and A—2 of the November 1994 Amendment. * Tables 1 and 2 present the center frequencies of each transponder in the forward and return directions.

Figures 6 through 10 illustrate power contours representative of the specified satellite antenna individual beam patterns and replace Figures A—3 through A—7 in the Novem— ber 1994 Amendment. Since the S—band transmit and L—band receive antennas are du— plicates of each other scaled for frequency, the figures apply to both transmit S—band and receive L—band antennas. These figures reflect minor adjustments to optimize cov— erage. Otherwise, the ELLIPSO‘‘ satellite user link satellite antenna designs remain unchanged. Figure 11 illustrates the power contours of the earth coverage feeder link antennas out to a scan angle of 50 degrees from nadir (the earth subtends only 26.5 degrees nadir to edge from 7846 kilometers attitude). Uplink and downlink antennas have identical patterns. As noted above, MCHI has simplified its feeder link antennas to facilitatere— duced feeder link bandwidth occupancy by eliminating the elliptically—shaped sector antennas retaining only the earth coverage feeder link antennas. All user link beams are mapped to channels carried by the earth coverage feeder link antennas. ELLIPSO will use code division multiple access (CDMA) for carrying multiple signals within each channel and frequency division multiple access (FDMA) for carrying mul— tiple channels within each beam‘s spectrum. To facilitate intra—service sharing, MCHI has revised its FDMA channel plans to use 2.5 MHz bandwidth channels or multiples thereof. This change will reduce potential interference among MSS licensees. These changes have no further impact on ELLIPSO‘ satellite design. ELLIPSO‘s FDMA user link channels will be arranged as shown in Figures 12 and 13 which replace Fig— ures C—1 through C—3 in the November 1994 Amendment. The specific arrangement of channels used will depend upon the regional service mix, level of demand, and sharing environment and may vary by region. ELLIPSO‘ satellite transponders will each carry multiple, simultaneous carriers in each of one or two channels within the passband of each transponder. User signals will have RF emission characteristics corresponding to emission designators 625KGIW, 1 M25GIW, 2MSGIW, SMOGIW, or 1 0MOGIW, depending on user serv— ice, loading, and the regional market, chosen in such a way as to minimize interference while maintaining optimum system efficiency. MCI-fi furnishes modified link budgets reflecting the above changes, shown in Tables 3 through 8, which replace Tables E—1 through E—4 in the November 1994 Amendment. As shown in the return link budgets in Tables 6, 7, and 8 line 5¢, ELLIPSO terminals operate nominally at levels of from —30 to —35 dBw/4kHz. After allowance of power control margins (~10 dB) ELLIPSO‘ terminals will operate well below the —15 dBw/4kHz EIRP density level specified in ITU RR 731E. Regardless of operating bandwidth or level of power control, ELLIPSO terminals will at no time exceed the EIRP density levels specified in RR 731E.

Surraquinp pue nofe7 uwwreaq 13sgq osdujfg 1 amSi14

5453.75 Mhz 15450 Mhz 15452.00 Mhz .”U/E/I?'l | 34 | 35 | RCP 5.5 . t Hm_hz] i [[ se | 37 | s8 [ ___—»=——(__| |)., _——* [ s§_4 [70 ]:) LCP 15450 15650 Mhz To Seam m V To Beam n Slot i l Slot j 5.5 Mhz 5.5 Mhz To Beam p To Beam q ] Slot 69 Slot 70 5.5 Mhz 5.5 Mhz 15646.25 Mhz 15650 Mhz Figure 2 Ku Band Feeder Link Spectral Organization 6878.75 Mhz 6875 Mhz 6877 Mhz @)UMSI L [ [ | [ } } [ }f [| }f f | |[s4a }ss}| ror f ->|th<- 7071.25 mhz ———& ! t 5-5 | : ;lssl37l [ J [ f $ f j f f f J _ } Isgl7ol§ch 6875 Mhz 7075 Mhz Figure 3 C Band Feeder Link Spectral Organization

e ELLIPSO‘ operates within the applicable power flux density hard limits required in Resolution 46 Annex 2. Table 9 presents ELLIPSO‘s operational C—band PFD levels, the corresponding Resolution 46 C—band PFD hard limits, and the resulting margin by which ELLIPSO operates under these limits. These figures are presented for both Bo— realis apogee (7846 kilometers) and the lowest operational altitude for Borealis (3,500 kilometers), summing both polarizations. ELLIPSO‘ will at all times operate within the ITU PFD limitations. As illustrated in the lower part of Table 9, ELLIPSO‘ sat— ellites comply with the PFD limits at the geostationary arc prescribed by Resolution 46. ' * Tables 10 and 11 present the ELLIPSO‘ Tracking, Telemetry, and Command link budgets and PFD levels respectively. * Table 12 reflects the anticipated ELLIPSOsatellite weight budgets, while Table 13 reflects the anticipated ELLIPSO‘ satellite power budget. These tables replace Ta— bles A—2 and A—3 in the November 1994 Amendment. Table 14 replaces Table A—3 in the November 1994 Amendment. * Consistent with these changes, Figure A—10 and Tables A—5 and A—6 are deleted from the November 1994 Amendment.

ENO E geam 1 1 o of 12 [>§ Direction 2 of 12 mg § i Bean 3 [> CS 0 0 0 0 © 0 Filters Ass[‘:l:bly s g tA g L d 1 1 S 4 Power Dividers, Amplifiers, tn >: Converters, Filters 8 § h & A 2E o> a —A m 3 < 0 Local Oscillator Bank Frequency Standajd R26 of 127 Bean 61 127 ot 137 Converter Assembly Figure 4 Ellipso Satellite Forward Path Block Diagram c3 1 of 12 D Bean 1 E ca 2 otf 12p 8 D Beam 2 % o Bean 3 Beturl? e Direction @ e e e C g 5 x TWTA 1 : Assemblies Filters g 1 baa a < ol Amplifiers, Converters, Filters, > 4 Power Summers £k C 2 «q < & o 3 o 8 uéJ H a U O < ma Local Oscillator |Bank & of 17 Seam 61 % Frequency Standafd 127 of 1¢7 Converter Assembly Figure 5 Ellipso Satellite Return Path Block Diagram

Table 1 Satellite Transponder Center Frequencies, Right Hand Polarization Forward Direction Return Direction Trans— N N ponder .3 F Feeder Link € User Link User Link E Feeder Link Channel| § receive 5 transmit receive < transmit 3 Center Frequency g Center Frequency Center Frequency 'g Center Frequency ;_6 Mhz C Mhz Mhz C Mhz oo co 2486.25, 1612.75, 2491.75, or 1618.25, or 1 15,456.50 5.0 2497.25 1623.75 5.0 6,881.50 2 15,462.00 5.0 same same 5.0 6,887.00 3 15,467.50 5.0 same same 5.0 6,892.50 4 15,473.00 5.0 same same 5.0 6,898.00 5 15,478.50 5.0 same same 5.0 6,903.50 6 15,484.00 5.0 same same 5.0 6,909.00 7 15,489.50 5.0 same same 5.0 6,914.50 8 15,495.00 5.0 same same 5.0 6,920.00 9 15,500.50 5.0 same same 5.0 6,925.50 10 15,506.00 5.0 same same 5.0 6,931.00 11 RCP 15,511.50 5.0 same same 5.0 6,936.50 12 15,517.00 5.0 same same 5.0 6,942.00 13 15,522.50 5.0 same —same 5.0 6,947.50 14 15,528.00 5.0 same same 5.0 6,953.00 15 15,533.50 5.0 same same 5.0 6,958.50 16 15,539.00 5.0 same same 5.0 6,964.00 17 15,544.50 5.0 same same 5.0 6,969.50 18 15,550.00 5.0 same same 5.0 6,975.00 19 15,555.50 5.0 same same 5.0 6,980.50 20 15,561.00 5.0 same same 5.0 6,986.00 21 15,566.50 5.0 same same 5.0 6,991.50 22 15,572.00 5.0 same same 5.0 6,997.00 23 15,577.50 5.0 same same 5.0 7,002.50 24 15,583.00 5.0 same same 5.0 7,008.00 25 15,588.50 5.0 same same 5.0 7,013.50 26 15,594.00 5.0 same same 5.0 7,019.00 27 15,599.50 5.0 same same 5.0 7,024.50 28 15,605.00 5.0 same same 5.0 7,030.00 29 15,610.50 5.0 same same 5.0 7,035.50 30 15,616.00 5.0 same same 5.0 7,041.00 31 15,621.50 5.0 same same 5.0 7,046.50 32 15,627.00 5.0 same same 5.0 7,052.00 33 15,632.50 5.0 same same 5.0 7,057.50 34 15,638.00 5.0 same same 5.0 7,063.00 35 15,643.50 5.0 same same 5.0 7,068.50

Table 2 Satellite Transponder Center Frequencies, Left Hand Polarization Forward Direction Return Direction Trans— N N ponder 2 F Feeder Link E User Link User Link E Feeder Link Channel) § receive S transmit receive < transmit 5 Center Frequency g Center Frequency Center Frequency 'g Center Frequency 0 Mhz C Mhz Mhz C Mhz a. c co 2486.25, 1612.75, 2491.75, or 1618.25, or 36 15,456.50 5.0 2497.25 1623.75 5.0 6,881.50 37 15,462.00 5.0 same same 5.0 6,887.00 38 15,467.50 5.0 same same 5.0 6,892.50 39 15,473.00 5.0 same same 5.0 6,898.00 40 15,478.50 5.0 same same 5.0 6,903.50 41 15,484.00 5.0 same same 5.0 6,909.00 42 15,489.50 5.0 same same 5.0 6,914.50 43 15,495.00 5.0 same same 5.0 6,920.00 44 15,500.50 5.0 same same 5.0 6,925.50 45 15,506.00 5.0 same same 5.0 6,931.00 46 15,511.50 5.0 same same 5.0 6,936.50 47 15,517.00 5.0 same same 5.0 6,942.00 48 15,522.50 5.0 same same 5.0 6,947.50 49 15,528.00 5.0 same same 5.0 6,953.00 50 15,533.50 5.0 same same 5.0 6,958.50 51 LCP 15,539.00 5.0 same same 5.0 6,964.00 52 15,544.50 5.0 same same 5.0 6,969.50 53 15,550.00 5.0 same same 5.0 6,975.00 54 15,555.50 5.0 same same 5.0 6,980.50 55 15,561.00 5.0 same same 5.0 6,986.00 56 15,566.50 5.0 same same 5.0 6,991.50 57 15,572.00 5.0 same same 5.0 6,997.00 58 15,577.50 5.0 same same 5.0 7,002.50 59 15,583.00 5.0 same same 5.0 7,008.00 60 15,588.50 5.0 same same 5.0 7,013.50 61 15,594.00 5.0 same same 5.0 7,019.00 62 15,599.50 5.0 same same _ 5.0 7,024.50 63 15,605.00 5.0 same same 5.0 7,030.00 64 15,610.50 . 5.0 same same 5.0 7,035.50 65 15,616.00 5.0 same same 5.0 7,041.00 66 15,621.50 5.0 same same 5.0 7,046.50 67 15,627.00 5.0 same same 5.0 7,052.00 68 zs 15,632.50 5.0 same same 5.0 7,057.50 69 15,638.00 5.0 same same 5.0 7,063.00 70 15,643.50 5.0 same same 5.0 7,068.50

4§ t— // ~ e C \\ \ F4 © // oz s No \, «. \ / / on x/X Ao Ts / * A \ / 2/ Nuls \ / ;//‘ o ‘\.‘ Pm lf / [ / // \ 1 P e . / \\ i 1 Fik iC ; { i I { i f \: \— [ . : .20 29° a9° ay ii |\ \ | i : e t «f A \ h eR / / } P j j[ \ \ A / / «. ,' t\ \\ l / / / / \\ ueX L , . y/ 4// A* L No l \ o s W \. » NjzT 2009 15 > CRl2 ~._ : L — / / ’/\Qghf Hand Circular Polarization> .2 a '4’( 7 \ \ // ‘ / * ’,\c‘\\‘ e ze 22 _ / X. TNnorzree e—f / \-\ Peak Value: 28.8 dBi j—" \‘\ .: > . . 7 eC Figure 6 Ellipso Center Beam Gain Contours ,_/"—'—_’“.‘"\;\ \ "?f(\ S 2o * i ~. / A * \ Cns l2z lC . / Oe »/ _,X\Righf Hand Circular Polafiiafioy / x0 \_. [ t* o \ / ~ x 20R ‘ ' » s use l / Nn nmllzlne Peak Value: 28.7 dBi —_ ~.. Figure 7 Gain Contour for Beam in First Ring

\ C L2 wl / "+. / \ 2J/\\thht a Handh Circular Polarization// / \ o ols S e / \\\ Peak Value: 28.5 dBi *_ * ~~ — ~. —. tl ~~.L.l Lk Figure 8 Gain Contour for Beam in Second Ring . \. '\‘r‘w._\.,,.,_.--:-_ K fy/ oL /‘ A\ \\Ffight Hand Circular Polarization// / \ j ty s. / MX Seelll> smy \_,C Pedk Value: 28.1 dBi _ _/ Figure 9 Gain Contour for Beam in Third Ring

~ .'\ A ~ \ A o ao [ / & / / \ .. L /f / N u) \, t mae ol e C / / * # a a & a / \_\ '\\R:g_ht Hand Circular Polanzatlorl/ // N\ trromeacet / . Peak Value: 27.8 dBi e" Figure 10 Gain Contour for Beam in Fourth Ring KEY dB re pk A= 0 B= —2 C= —4 D= =6 E= =8 F= ~10 G= —12 H= ~14 I= ~16 J= ~18 K= —20 Peak Gain 10.0 dBi 2l l S u22 > tC Scan Angle Figure 11 Feeder Link Beam Contours, Up and Downlinks

/—— 2.5 Mhz v 2.5 Mhz v 2.5 Mhz \/ 2.5 Mhz I 1611.375 1614125 1616.875— 1619.625 8 I / 2.5 Mhz v 2.5 Mhz \/ 5.0 Mhz \‘ — ‘ 1618.250 I mol z2 / 5.0 Mhz \/ 2.5 Mhz \/ 2.5 Mhz 1612.750 ‘ ‘ mm [wan _ 5.0 Mhz \/ 5.0 Mhz vn lmm \ N in 3 a° 3 3 P &n N N Near Radio i F 2.5 Mhz v 2.5Mhz v 2.5 Mhz T T One CDMA p System < 5.0 Mhz n in 3 A 1621.0 1610 1612 1613.8 1618.25 1621.35 1622.6 Figure 12 Ellipso Channel Plan at L—Band Frequencies in Megahertz, Right Hand Circular Polarization

/ 2.5 Mhz V 2.5 Mhz _ \/ 2.5 Mhz V 2.5 Mhz \ * 2484.».875 24817.625 249b.375 2493..1 25 2.5 Mhz V 2.5 Mhz 5.0 Mhz V 2.5 Mhz \/ 2.5 Mhz \ t t r t — 2495.875 2498.625 2486.250 / 2.5 Mhz v 2.5 Mhz v 5.0 Mhz T | T 5.0 Mhz 2491.750 I 2497.250 5.0 Mhz V 5.0 Mhz © t High traffic beams only 2483.5 2494.5 2500 Figure 13 Ellipso Channel Plan at S—Band Frequencies in Megahertz, Right Hand Circular Polarization

Table 3 Forward Link Calculations, Wide Band Channel Mobile/Handheld Example Parameter Unit Center [1st Ring Ring 3rd Ring 4th Ring antenna lNTEHMODULATION _ 31 Downlink Carrier to Intermadulation Ratio (C/IM) dB 18 18 18 18 18 32 Downlink Signal to intermodulation Ratio (S/IM) dB 1.56 1.83 2.11 2.40 2.93 to

Table 4 Forward Link Calculations, Narrow Band Channel Fixed Terminal Example Parameter Unit Center 1st Ring 3rd Ring} 4th Ring Antenna to INTERMODULATIO N 31 Downlink Carrier to intermodulation Ratio (C/M) dB 18 18 18 18 18 32 Downlink Signal to intermodulation Ratio (S/IM) dB —3.19 —3.15 —3.09 ~3.01 —2.96 to

Table 5 Forward Link Calculations, Narrow Band Channel Mobile/Handheld Terminal Example Parameter Unit Center fist Ring [2nd Ring| 3rd Ring Losses to Noise

Table 6 Return Link Calculations, Wide Band Channel Mobile/Handheld Terminal Example Parameter Unit Center |1ist Ring Ring 3rd Ring] 4th Ring Data Rate 4800 4800 4800 48 UPLINK Transmit Power Per Carner Free Receive Antenna Gain Receiver Te to Noise Ratio DOWNLINK Transmit Antenna Gain Transmit Power Per Carrier 10310 Received Power ~154.93 Noise Power ~139.85 INTERFERENCE 220 Interference Factor oth Ell sats INTERMODULATION 24 Downlink Carrier to Intermodulation Ratio (C/IM) dB 18 18 18 18 18 25 Downlink Signal to Intermodulation Ratio (S/IM) dB ~5.98 —5.80 —5.76 —5.79 —6.02 to Noise Ratio

Table 7 Return Link Calculations, Narrow Band Channel — Fixed Terminal Example Parameter Unit Center 1st Ring 3rd Ring| 4th Ring Data Rate 4800 4800 UPLINK Transmit Power Per Carrier Receive Antenna Gain Receiver Te to Noise Ratio DOWNLINK Transmit Antenna Gain Trangsmit Power Per Carrier Received Power Noise Power ~142.86 INTERFERENCE Interference Factor oth Ell sats INTERMODULATION 24 Downlink Carrier to Intermodulation Ratio (C/IM) dB 18 18 18 18 18 25 Downlink Signal to Intermodulation Ratio (S/IM) dB ~2.72 —4.26 —5.31 —6.08 —6.16 to Noise Ratio

Table 8 Return Link Calculations, Narrow Band Channel Mobile/Handheld Terminal Example Parameter Unit Center |ist Ring |2nd Ring|3rd Ring] 3rd Ring Data Rate 4800 4800 4800 UPLINK Transmit Power Per Carrier ~174.97 Receive Antenna Gain Receiver T to Noise Ratio DOWNLINK Transmit Antenna Gain Transmit Power Per Carrier Received — —150.93 Noise Power INTERFERENCE Interference Factor oth Ell sats INTERMODULATION 24 Downlink Carrier to Intermodulation Ratio (C/IM) dB 18 18 18 18 18 25 Downlink Signal to Intermadulation Ratio (S/M) dB —2.97 —2.79 —2.75 —2.78 —3.01 to Noise Ratio

Table 9 Ellipso C—Band PFDs C—band Service PFDs Wideband Fixed Mobile Aititude: Altitude: Altitude:

Table 10 Ellipso Tracking, Telemetry, and Command Link Budgets Item Parameter Unit Amount GENERAL Data RF RF Downlink F MHz 15450.25 EIRP/carrier dBwW 53.24 ‘Transmit Power W 1.00 Line Loss dB 2 ransmit dBi 55.2 Free Loss dB 198.09 extreme km 12400 Losses dB 2.00 Received Power/carrier dBw —146.85 Thermali Noise dBW/Hz —200.82 Receiver T °K 600 to Noise Ratio dB 19.99 Eb/No dB 20.17 uired Eb/No dB 6.30 DOWNLINK F 6861 EIRP/carrier —14.01 Transmission Line Loss dB 1.00 Transmit Power w 0.05 Free Loss dB 191.04 Atm Losses dB 1.00 Receive Antenna Gain dBi 48.2 Received Power dBW —157.86 Incident PFD mA2 mhz dBw/mhz/m2 —136.87 PFD/mr‘2/4 khz @ GEO arc dBw/4kh —191.90 PFD/m\2/4 khz @ GEO arc (via earth limb Bw/4khz/ —175.43 Thermal Noise dBW/Hz —206.84 Receiver 150 Thermal Noise Power dBw —169.85 Downlink to Noise Ratio dB 11.99 Received Eb/No dB 12.17 dB 5.87

Table 11 Ellipso Tracking, Telemetry, and Command PFD Levels Item C—band TT&C PFDs Altitude 3500 km 7846 km 34 PFD/m"~2/4 khz, nadir dBw/4khz/m2 —156.85 —163.86 34a _|Permitted PFD dBw/4khz/m2 ~144.00 —144.00 34b Margin dB 12.85 19.86 35 PFD/m*A2/4 khz, 5° dBw/4khz/m2 —162.88 —167.68 35a _|Permitted PFD dBw/4khz/m2 —154.00 —154.00 35b Margin dB 8 .88 13.68 36 PFD/mA2/mhz, nadir dBw/mhz/m2 —132.87 —139.89 36a _|Permitted PFD dBw/mhz/m2 —124.00 —124.00 36b _|Margin dB 8 .87 15.89 37 PFD/mA2/mhz, 5° dBw/mhz/m2 —138.90 —143.70 37a —|}Permitted PFD dBw/mhz/m2 —134.00 —134.00 37b Margin dB 4 .90 9 .70 38 PFD/m~2/4 khz @ GEO (0dBi backlobe) dBw/4khz/m2 —~194.91 38a |Permitted PFD dBw/4khz/m2 —168.00 38b |Margin dB 26.91 39 PFD/mA2/4 khz @ GEO (via earth limb) dBw/4khz/m2 —178.44 39a |Permitted PFD dBw/4khz/m2 —168.00 39b _|Margin dB 10.44

Table 12 Ellipso Satellite Weight Budget Concordia Borealis Mass, kg Mass, kg Payload 160 160 S/C Bus Propulsion, Attitude Control 52 52 TT&C 32 32 Prime Power: Array, Drive, Batteries, PC&DU 250 250 Support: Structure, Thermal, Harness, Balance 115 115 Total Bus 449 449 Total Dry Mass 609 609 Propellant 22 35 Launch Mass 631 644 Table 13 Ellipso Satellite Power Budget Maximum, Orbit Avg, W W Forward 1812 Return 934 Subtotal 2745 Contingency 275 Total Payload 3020 2023 Bus 219 Total S/c 2242

Table 14 Satellite RF Figures of Merit Transponder Gains Forward (Ku to S Bands) Adjustable, 122 — 137 dB Return (L to C Bands) Adjustable, 122 — 137 dB Total Satellite Available RF Power: 500 watts RF Power per Beam Variable with loading L— and S—Band Antenna Design Circular 127 Element | Active Array L—Band Array Diameter 75 inches S—Band Array Diameter 50 inches L— and S—Band Antenna Gains and G/Ts Gain G/T Inner 28.8 dBi 2.0 dB/°K First ring beam 28.7 dBi 1.9 dB/°K Second ring beam 28.5 dBi 1.7 dB/°K Third ring beam 28.1 dBi 14 dB/°K Fourth ring beam 27.8 dBi 1.1 dB/°K L— to S—Band Beam Pattern Mapping Congruent mapping (identical coverages) L—Band Receiver Temperatures 475°K Feeder Link Antennas C—Band Antenna Design Earth Coverage Horn Antenna C—Band RF Power 50 watts Ku Band Antenna Design Earth Coverage | Horn antenna Ku—Band Receiver Temperatures 6ON°K C and Ku Antenna Gains and G/Ts Gain G/T C Band Earth Coverage 10.2 dBi N/A Ku Band Earth Coverage 10.0 dBi —17.8 dB/°K


Document Created: 2016-12-23 16:06:17
Document Modified: 2016-12-23 16:06:17
© 2025 FCC.report
This site is not affiliated with or endorsed by the FCC