Attachment EMC - Analysis

This document pretains to SES-MOD-20040315-00413 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2004031500413_368914

Intelsat inspiring connections ADril 5, 2004 Ms. Marlene Dortch Secretary Federal Communications Commission 445 1 2 Street, ~ ~ S.W. APR 7 2004 I Washington, D.C. 20554 RE: lntelsat LLC Application of modification of radio station license: E020169 Nuevo, CA FCC File No. SES-MOD-20040315-00413 Dear Ms. Dortch: Attached please find an Electromagnetic Compatibility (EMC) Analysis performed for the above-referenced earth station. Would you please associate this EMC analysis with lntelsat LLC's pending above application for modification of radio station license, filed on March 14, 2004. lntelsat LLC also has reviewed NTlA TR-99-361 Report, Technical Characteristics of Radiolocation Systems Operating in the 3. 1-3.7GHz Band and Procedures for assessing EMC with fixed Earth Station Receivers. To the extent there is a potential for unacceptable interference that may be caused to its receiving earth station, lntelsat agrees to accept such interference. Furthermore, it is aware that the use of an RF filter ahead of the low noise amplifier would limit potential out-of-band interference to the receiving earth station. Resp&%fully submitted, 1 lntelsat LLC Robert A. Mansbach Its Attorney lntelsat Global Service Corporation 3400 International Drive NW, Washington DC 20008-3006 USA www.intelsat.com T + I 202-944-6800 F + I 202-944-7529

Interference Analysis Report An Assessment of the Impact of Radiolocation Systems Operating in 3.1-3.7 GHz Band on Fixed Satellite Services Earth Station Receiver Prepared for Intelsat Site Name: Nuevo, CA (Call Sign: E020169) Prepared By C O M S E A R Ci4 March 31.2004 19700 Janelia Farm Blvd *Ashburn, VA 20147 USA 703.726.5500

1.0 Introduction Interference calculations were performed to determine the potential for in-band and out-of-band interference from Radiolocation Systems operating in the 3.1 to 3.7 GHz band'. The geographical positions and operating parameters of these systems was derived from NTIA Document TR-99-361'. 2.0 Radiolocation Systems in the 3.1 - 3.7 GHz Band High-powered mobile and fixed radar systems operated by the Federal Government operate in the 3.1 - 3.7 GHz band. These radars are used to search for and track near-surface and high-altitude airborne projectiles, sea surveillance, and airborne objects. The NTIA report referenced above has identified the locations for two types of systems: land-based and shipboard based. Also included in the report are the operating characteristics of these radars. There are two prevalent types of shipboard radars, denoted as type A and Type B, and one type of ground-based radar. An Airborne System radar is also specified. This analysis will concern itself with interference from the ground based and shipboard based radars based upon the relative operating positions and parameters specified in the NTIA report. A summary of the operating parameters for the shipboard and ground based radar systems is shown below: Table 1 - Technical Characteristics of 3.1-3.7 GHz Radiolocation Systems Peak transmit Power ' This report is being provided as required under Footnote US 245. National Telecommunications and Information Administration, US. DEPARTMENT OF COMMERCE, NTIA Report TR 99-361, TECHNICAL CHARACTERISTICS OF RADIOLOCATION SYSTEMS OPERATING IN THE 3.1-3.7 GHz BAND AND PROCEDURES FOR ASSESSLVG EMC WITH FIXED EARTH STATION RECEIVERS, (December 1999). Interference Analysis Report for Nuevo, CA E0201 69

3.0 Earth Station System Parameters The Fixed Satellite Service Earth Station's operational parameters are shown in the Tables 2 and 3 below: TABLE 2 - SATELLITE EARTH STATION PARAMETERS AND COORDINATION DATA Call Sign E020 169 Licensee Code INTELS Licensee Name INTELSAT, LLC Site Information NUEVO,CALIFORNIA Venue Name Latitude (NAD 83) 33" 47' 46.5" N Longitude (NAD 83) 117" 5' 15.0" W Climate Zone A Rain Zone 4 Ground Elevation (AMSL) 550.0 m I 1804.5 f? Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Analog and Digital Satellite Arc 50" W to 190" West Longitude Azimuth Range 103.2" to 260.3" Corresponding Elevation Angles 10.3" 15.5" Antenna Centerline (AGL) 11.Om/36.1 f? Antenna Information Receive Transmit Manufacturer Vertex Communications Vertex Communications Model 16.4 Meter 16.4 Meter Gain / Diameter 54.8 dBi I 16.4 m 59.0 dBi / 16.4 m 3-dB I 15-dB Beamwidth 0.32" 10.68" 0.20" 10.40" 36MOF3F 43K8G7W - 72MOG7W Max Available RF Power (dBWl4 H z ) 0.0 -2.7 -15.5 (dBWlMHz) 24.0 7.7 8.5 Maximum EIRP (dB W14 Hz) 59 .O 56.3 43.5 (dBWlMHz) 83.0 66.7 67.5 Interference Objectives: Long Term -156.0 dBWlMHz 20% -154.0 dBWl4 HZ 20% Short Term -146.0 dBWlMHz 0.01% -131.0 dBWI4 HZ 0.0025% Frequency Information Receive 4.0 GHz Transmit 6.1 GHz Emission / Frequency Range (MHz) 36MOF3F / 3625.0 - 4200.0 36MOF3F 15850.0 - 6425.0 43K8G7W - 72MOG7W 13625.0 - 4200.0 43K8G7W - 72MOG7W 15850.0 - 6425.0 Max Great Circle Coordination Distance 732.2 km 1454.9 mi 473.5 km 1294.2 mi Precipitation Scatter Contour Radius 427.7 km 1265.7 mi 120.8km175.1 mi Interference Analysis Report for Nuevo, C A E020169

Table 3 - Coordination Values Coordination Values NUEVO, CA Licensee Name INTELSAT, LLC Latitude (NAD 83) 33" 47' 46.5" N Longitude (NAD 83) 117" 5 ' 15.0" W Ground Elevation (AMSL) 550.0 m / 1804.5 ft Antenna Centerline (AGL) 11.Om/36.1 ft Antenna Model Vertec Communications 16.4 Meter Antenna Mode Receive 4.0 GHz Transmit 6.1 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% - 154.0 dBW/4 lcHz 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBW/4 ~ H Z 0.0025% Max Available RF Power 0.0 (dBWI.1 W z ) Receive 4.0 GHz Transmit 6.1 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (") Elevation (") Discrimination (") Gain (dBi) Distance (km) Gain (dBi) Distance (h) 0 2.1 1 99.69 -10.00 191.93 -10.00 100.00 5 2.49 98.16 -10.00 183.40 -10.00 100.00 10 3.19 93.21 -10.00 165.34 -10.00 100.00 15 3.53 88.25 -10.00 157.68 -10.00 100.00 20 3.42 83.28 -10.00 160.06 -10.00 100.00 25 3.32 78.32 - 10.00 162.17 -10.00 100.00 30 3.60 73.35 -10.00 156.11 -10.00 100.00 35 3.81 68.38 -10.00 151.79 -10.00 100.00 40 3.64 63.43 -10.00 155.22 -10.00 100.00 45 3.61 58.48 -10.00 155.95 -10.00 100.00 50 3.23 53.56 -10.00 164.40 -10.00 100.00 55 2.97 48.65 -10.00 172.14 -10.00 100.00 60 2.98 43.73 -9.02 176.91 -9.02 100.00 65 3.57 38.73 -7.70 170.16 -7.70 100.00 70 3.75 33.80 -6.22 173.91 -6.22 100.00 75 3.41 29.00 -4.56 190.11 -4.56 100.00 80 3.98 24.03 -2.52 188.58 -2.52 100.00 85 3.86 19.31 -0.14 203.49 -0.14 100.56 90 3.71 14.76 2.77 220.37 2.77 114.31 95 2.97 1 1.02 5.95 260.75 5.95 138.25 100 3.19 7.83 9.66 284.47 9.66 150.15 105 3.37 7.17 10.62 286.87 10.62 150.75 110 4.14 9.15 7.96 246.36 7.96 127.10 115 4.30 12.99 4.16 2 17.45 4.16 110.33 120 4.17 16.99 1.25 205.48 1.25 101.31 125 4.32 20.71 -0.91 191.63 -0.9 1 100.00 130 4.06 24.60 -2.77 185.86 -2.77 100.00 135 4.83 27.66 -4.05 164.03 -4.05 100.00 140 4.02 3 1.62 -5.50 172.00 -5.50 100.00 145 4.48 34.49 -6.44 157.34 -6.44 100.00 150 3.93 37.83 -7.45 161.86 -7.45 100.00 155 2.87 4 1.29 -8.40 182.50 -8.40 100.00 160 2.58 43.82 -9.04 185.96 -9.04 100.00 165 3.13 45.18 -9.37 171.62 -9.37 100.00 170 3.73 45.94 -9.55 155.58 -9.55 100.00 175 4.03 46.42 -9.67 148.97 -9.67 100.00 180 4.78 45.93 -9.55 138.36 -9.55 100.00 185 5.78 44.69 -9.26 130.29 -9.26 100.00 Interference Analysis Report for Nuevo, CA E020 169

Coordination Values NUEVO, CA Licensee Name INTELSAT, LLC Latitude (NAD 83) 33" 47' 46.5" N Longitude (NAD 83) 117" 5' 15.0" W Ground Elevation (AMSL) 550.0 m / 1804.5 ft Antenna Centerline (AGL) 11.Om/36.1 A Antenna Model Vertex Communications 16.4 Meter Antenna Mode Receive 4.0 GHz Transmit 6.1 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -154.0 dBW/4 WZ 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBW/4 HZ 0.0025% Max Available RF Power 0.0 (dBWI4 kHz) Receive 4.0 GHz Transmit 6. I GHz Horizon Antenna Horizon Coordination Horizon ~ ~~ Coordination - ..~-~~~ ....... Azimuth (") Elevation (") Discrimination (") Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 6.1 1 43.65 -9.00 127.98 -9.00 100.00 195 6.28 42.29 -8.66 127.45 -8.66 100.00 200 6.39 40.53 -8.20 128.07 -8.20 100.00 205 6.25 38.54 -7.65 131.79 -7.65 100.00 210 5.77 36.40 -7.03 138.08 -7.03 100.00 215 5.60 33.66 -6.18 143.64 -6.18 100.00 220 6.12 30.14 -4.98 143.41 -4.98 100.00 225 5.72 27.06 -3.81 153.78 -3.81 100.00 230 5.71 23.52 -2.29 162.07 -2.29 100.00 235 5.56 19.93 -0.49 176.05 -0.49 100.00 240 5.58 16.12 1.82 189.13 1.82 100.00 245 5.55 12.24 4.81 206.35 4.81 100.00 250 4.99 8.6 1 8.62 235.28 8.62 118.35 255 4.43 4.9 1 14.71 294.26 14.71 150.34 260 4.21 1.30 29.17 732.2 1 29.17 473.47 265 4.26 4.86 14.84 299.06 14.84 153.61 270 4.46 9.76 7.27 235.20 7.27 120.07 275 4.46 14.74 2.79 207.01 2.79 103.15 280 3.56 19.79 -0.4 1 205.74 -0.41 104.94 285 2.27 24.90 -2.90 220.75 -2.90 119.60 290 1.35 29.96 -4.92 236.59 -4.92 133.62 295 0.89 34.97 -6.59 245.26 -6.59 140.69 300 0.2 1 40.00 -8.05 296.85 -8.05 187.74 305 0.00 44.97 -9.32 289.62 -9.32 183.74 310 0.2 1 49.91 -10.00 284.20 -10.00 180.22 315 0.00 54.89 -10.00 285.28 -10.00 181.13 320 0.00 59.86 -10.00 285.28 - 10.00 181.13 325 0.00 64.83 -10.00 285.28 -10.00 181.13 330 0.00 69.80 -10.00 285.28 -10.00 181.13 335 0.00 74.78 -10.00 285.28 -10.00 181.13 340 0.00 79.75 -10.00 285.28 -10.00 181.13 345 0.00 84.73 - 10.00 285.28 - 10.00 181.13 350 0.28 89.7 1 -10.00 275.63 -10.00 172.85 355 1.34 94.69 - 10.00 210.04 - 10.00 116.93 Interference Analysis Report for Nuevo, CA E020 169

4.0 Interference Calculations The interference was calculated into the earth station receive system for both in-band and out-of-band interference. The interference power level was calculated using the formula below: P, = Pt + G, - FSL - OHLOSS + G, - LLt - LL,, Where: P, : Interference power level received at victim earth station, in dBW PI: Transmitter power of Radiolocation system, in dBW GI: Gain of Radiolocation transmit system, in dBi FSL: Free Space Loss between radiolocation system and earth station, in dB OHLOSS: Over-the-Horizon losses between radiolocation system and earth station, in dB Ges: Horizon gain of the earth station toward radiolocation transmitter, in dBi LL,: Line losses of the radiolocation system, in dB (assume 2dB per NTIA report) LL,,: Line losses of the earth station system, in dB (assume 0 dB unless known) This interference power level was then compared to in-band and out-of-band interference criteria. The in-band criteria was developed using ITU and FCC recommendations3. The out-of-band interference criteria was developed using the following: The earth station’s low -noise amplifier front-end overload criteria of was determined using the following calculations: T=C-G Where: T = input threshold at which front-end overload occurs, dBW C = output 1 dB gain compression point of the LNA, typical -20 dBW G = Gain of the LNA, dB For the purposes of this report it was assumed that the low-noise amplifier would not provide any out-of-band frequency rejection, thus no Frequency Dependent Rejection values based upon any RF selectivity, such as pre-LNA filtering or inherent LNA filtering, have been assumed. The maximum level of interference is the includes the input saturation threshold value minus a 10 dB output backoff value to consider in operation levels The maximum interference power receive, P,, allowable then becomes: Max P, T - IPBO For a 65 dB gain LNA this value is -95 dBW. In the absence of manufacturer LNA/LNB specifications the following typical values have been used: T = -95 dBW C = -20 dBW G = 65 dB The propagation model to determine the over-the-horizon loss is the NSMA OH-Loss model4. When the propagation link is very lengthy, over 250 miles, an estimated OH-loss using a rounded earth modeling value has been used. FCC Rules 47CFR25.251 by reference ITU Radio Regulations Appendix S7. National Spectrum Managers Association has developed an industry-accepted version that incorporates NBS Tech Note 101. Interference Analysis Report for Nuevo, CA E020 169

5.0 Summary of Results The summary calculations are shown for all shipboard based and land based systems in Tables 4 through 8 below. Whenever Radar A and B are possibly in use, the interference calculations have assumed the higher powered systems (Radar B). The antenna elevation for the Ground Based systems was assumed to be 46 m even though it was not specified in the NTIA report. Interference Analysis Report for Nuevo, CA E020169

Profile (Is path Total Interfering under Estimated Profiled Path Power Out-of Bearing Distance 250 FSL OH-Loss OH-Loss Loss Level In-Band Band Radar Location Lat (N) Lon (w) (deg.) (mi) miles?) (dB) (dB) (dB) (dB) (dBW1MHz) Interference? Overload? Pensacola, FL 302128 0871626 89.8 1765.1 NO -172.8 -93.7 NIA ,266.4 -203.7 NO NO Pascagoula, MS 302200 0882900 90.4 1694.6 NO -172.4 -93.0 NIA ,265.4 -202.6 NO NO S.Inigoes, MD 381000 0762300 70.5 2300.9 NO -175.1 -98.3 NIA ,273.3 -219.6 NO NO Table 5 Shipboard Radar B Land-Based Test and Training Sites 1 1 1 Profile (Is path Total Interfering under Estimated Profiled Path Power Out-of Bearing OH-Loss OH-Loss Loss Level In-Band Band Radar Location Lat(N) Lon(w) (deg.) (dB) (dB) (dB) (dBW1MHz) Interference? Overload? Moorestown, NJ 395849 0745630 67.0 -98.8 NIA -274.1 -204.3 NO NO Wallo s Island, VA 375600 0752800 70.8 2353.2 1 NO I -175.3 -98.7 NIA -273.9 -204.1 NO NO Table 6 ShiDboard Radars A and B Home Ports Profile (Is path Total Interfering under Estimated Profiled Path Power Out-of Bearing Distance 250 FSL OH-Loss OH-Loss Loss Level In-Band Band Radar Location Lat (N) Lon (w) (deg.) (mi) miles?) (dB) (dB) (dB) (dB) (dBW1MHz) Interference? Overload? Bath, ME 435425 0694848 59.9 2643.7 NO -176.3 -100.7 NIA -277.0 -210.0 NO NO -Bremerton, WA 473324 1223811 344.7 1 993.2 I NO -167.8 -83.7 -168.0 I -84.1 NIA I -251.4 -185.4 NO NO Everett, WA 475858 1221354 346.3 1015.3 NO NIA 1-252.01 -186.0 NO I I NO -Mayport, FL 302334 0812427 86.9 I 2105.9 1 NO -174.3 1 -96.7 I NIA )-27I.O1 -192.2 NO I NO I NTrfolk, VA 365200 0762100 73.0 2311.2 NO -175.1 -98.4 NIA -273.5 -203.7 NO NO Pascagoula, MS 302253 0882933 90.4 1693.8 NO -172.4 -93.0 NIA -265.4 -186.6 NO NO Pearl Harbor, HI 212000 1580000 260.6 2653.2 NO -176.3 -100.8 NIA -277.1 -171.9 NO NO Portland, ME 434100 0701800 60.3 2618.1 NO -176.2 -100.5 NIA -276.7 -209.7 NO NO [San Diego CA 1324105 11170800 I 182.0 I 76.6 I YES 1 -145.5 I -74.5 I -74.5 )-220.01 -153.5 YES I NO I I 19700 Janelia Farm Blvd .Ashburn, VA 20147 USA 703.726.5500

Table 7 Naval At-Sea ODerational Areas Profile (Is path Total Interfering under Estimated Profiled Path Power out-of Bearing Distance OH-LOSS Loss Level In-Band Band Operational Area Lat (N) Lon (w) (deg.) (mi) 0 (dBW/MHz) Interference?Overload? 0 AFWTF (North Range) AFWTF (NR)I 183000 0670000 97.7 3285.4 NO -282.6 -196.9 NO NO AFWTF (NR)2 200000 0670000 95.7 3234.5 NO -282.2 -196.5 NO NO AFWTF (NR)3 221000 0654800 92.3 3235.9 NO -282.2 -203.4 NO NO AFWTF (NR)4 221000 0652000 92.1 3263.5 NO -282.4 -203.7 NO NO AFWTF (NR)5 185000 0620000 94.6 3569.7 NO -284.8 -206.0 NO NO AFWTF (NR)6 )I85000 10620000 I 94.6 I 3569.7 I NO -284.8 -206.0 NO NO AFWTF (NR)7 1182500 )0643000 96.4 I 3435.8 1 NO -283.8 -198.1 NO NO -283.7 -198.0 NO NO -282.8 -197.1 NO NO -178.4 1 -105.0 I N/A -178.2 1 -104.6 I N/A Interference Analysis Report for Nuevo, CA E020 169

1ic 1 1 Table 7 Naval At-Sea Operational Areas (continued) I I 1 I Profile 1 1 Bearing Distance (Is path under 250 FSL Total interfering Estimated Profiled Path OH-LOSS OH-LOSS LOSS Level Power ~ In-Band out-of Band Operational Area Lat (N) Lon (w) (deg.) (mi) miles?) (dB) (dB) (dB) (dB) dBWlMHz interference? Overload’ AUTEC I I AUTECI 1252000 10780500 94.3- 2419.9 NO NIA 1-274.7 -195.9 NO NO AUTEC2 252000 0774500 94.1 2439.4 NO /-274.1 -196.1 NO NO AUTEC3 232500 0762000 96.3 2577.9 NO -276.: -190.6 96.9 2524.4 NO NIA 1-275.€ -190.1 260.9 2660.8 NO -171.9 260.8 2667.1 NO -172.0 260.6 2663.7 NO -277.; -172.0 260.5 2662.7 NO -277.1 -172.0 NO 87.8 2202.3 NO -193.4 1 NO 1 NO 91.6 1811.1 NO -188.3 1 NO I NO 93.3 1827.2 NO -267.2 -188.5 I NO I NO 93.4 1768.7 NO -187.7 1 I NO I I NO PMRFI 220000 1594500 262.7 2733.5 NO -176.6 -101.3 I -172.6 I NO 1 NO PMRM 220800 1620000 264.2 2861.O ’ NO -176.9 -102.1 -173.8 PMRF3 264.9 2822.2 NO -176.8 -101.8 PMRM 268.0 2528.1 NO -175.9 -99.9 -192.5 Pearl Harbor South OPAREA 258.3 2800.8 NO -176.8 -101.7 -173.3 I NO I NO PHS2 1210000 1580800 260.2 2672.0 NO -176.4 -100.9 -277.2 -172.0 I NO I NO PHS3 1210000 1573600 259.8 2641.O NO -176.3 -100.7 -276.E -171.7 I NO I NO PHS4 191800 1562000 256.4 2627.0 NO -176.2 -100.6 -276.1 -171.6 NO- NO PHS5 184900 1574500 256.8 2725.7 NO -176.5 -101.2 -277.1 -172.6 NO NO Interference Analysis Report for Nuevo, CA E020169

Table 7 Naval At-Sea Operational Areas (continued) Profile (Is path Total Interfering under Estimated Profiled Path Power out-of 250 FSL OH-LOSS OH-LOSS Loss Level In-Band Band Operational Area Lat (N) Lon (w) miles?) (dB) (dB) (dB) (dB) (dBWIMHz) Interference? Overload' Southern California (SOCAL) SOCALI 385200 I255200 NO -163.4 -75.0 NIA ,238.4 -172.4 NO NO SOCAL2 390000 1240000 NO -162.2 -72.7 NIA ,234.9 -168.9 NO NO SOCAL3 311500 1163000 YES -152.9 -74.2 -74.2 ,227.1 -160.6 NO NO SOCAL4 300000 1203000 NO -158.2 -64.5 NIA ,222.7 -151.7 YES NO Virginia Capes OPAREA vc 1 384500 07500oo NO vc2 384500 0743000 NO vc3 374500 0724000 NO vc4 350600 0724000 NO vc5 1320000 0771200 NO ,273.6 -200.1 NO NO VC6 1342400 0773000 NO ,273.0 -199.5 NO NO vc7 354000 0752500 2375.0 NO ,274.2 -200.7 NO NO yca 370000 0755000 NO Interference Analysis Report for Nuevo, CA E020169

Table 8 Land-Based Radar Test and Training Sites 1 1 1 1 (ci ;- - I Total Path Interfering Power Out-of Bearing Distance Loss Level In-Band Band Radar Location L a t ( ~ ) Lon(w) (mi) 0 IdBWIMHz) Interference? Overload? Fort Lewis WA 470525 1223510 344.2 962.0 -167.5 -83.1 ,250.t - -184.6 NO NO Yakima Firin Fort Carson Fort Rliev Fort Shafter Hunter AAF Fort Gillem WA CO KS HI GA GA 464018 1202135 383810 1044750 385813 0965139 211800 1574900 320100 0810800 333600 0841900 350.0 260.4 83.6 81.3 905.0 763.5 1182.8 2643.6 2093.7 1887.9 1866.0 * -82.1 -79.1 -86.7 -96.6 -94.8 -94.6 I NIA .249.( - .244.t - .256.( - .277.( .270.! .268.: .267.! -183.0 -177.6 -186.2 -171.8 -197.4 -194.7 -194.4 NO NO NO I I NO NO NO Fort Benning GA 322130 0845815 84.3 - Fort Stewart GA 1315145 10813655 I 84.1 2068.1 -96.4 .270.1 - -197.1 NO Fort Rucker AL 1311947 10854255 1 86.9 1838.6 -173.1 -94.4 -267.! - -188.7 I NO Yuma Proving AZ 330114 1141855 107.7 168.9 YES -152.4 -73.1 -73.1 -225.! - -141.5 I YES I NO Fort Hood TX 310830 0974550 94.0 1143.5 NO -169.0 -86.1 -255. -176.3 I NO I NO I Fort Knox KY 375350 0855655 71.7 1770.7 NO -172.8 -93.7 -266.r -196.7 NO I NO Fort Bragg NC 350805 0790035 76.8 2175.9 -97.3 NIA -271 - .! -1 98.4 NO I NO Fort Campbell KY 1363950 10872820 I 74.7 1686.8 -92.9 NIA -265.: - -195.5 Fort Polk LA 1310343 10931226 I 91.3 1408.3 -89.8 -260.: -181.8 1428.6 -90.0 NIA -260.' ~ -191.1 103.5 -68.8 -68.8 -216.' - -150.9 YES 1071.7 -168.4 -85.0 NIA -253.~ -179.9 NO NO 635.3 -163.9 -75.9 NIA -239.' - -169.1 I NO 1291.2 -88.2 NIA -258. -188.5 I NO I NO 2333.8 -98.5 NIA -273. - -206.7 2014.8 -96.0 NIA -269. -196.4 1589.9 -171.8 -91.9 NIA -263. -196.7 2390.6 -175.4 -98.9 NIA -274. - -204.5 NO Parks Reserve CA 1374254 I1214218 I 317.5 374.6 -159.3 -66.8 NIA -226. - -160.0 NO Aberdeen Proving MD 1392825 (0760655 68.0 I 2310.4 NO -175.1 -98.4 NIA -273. - -203.6 NO Fort Huachuca AZ 1313500 ~1102000 109.4 I 422.1 -68.8 NIA -229. - -160.2 NO 1 NO Fort Monmouth NJ 1401900 10740215 66.3 I 2421.5 -99.2 NIA -274. -204.9 I NO 1 NO J Interference Analysis Report for Nuevo, CA E020 169

Profile (Is path Total Interfering under Estimated Profiled Path Power Out-of Bearing Distance 250 FSL OH-Loss OH-Loss Loss Level In-Band Band Radar Location Lat (N) Lon (w) (deg.) (mi) miles?) (dB) (dB) (dB) (dB) (dBW/MHz) interference? Overload? Picatinny Arsenal NJ 405600 0743400 65.2 2391.8 NO -175.4 -99.0 N/A -274.4 -204.5 NO NO Redstone Arsenal AL 343630 0863610 79.6 1746.8 NO -172.7 -93.5 NIA -266.2 -192.7 NO NO White Sands NM 322246 1062813 96.1 623.6 NO -163.7 -75.6 NIA -239.3 -168.6 NO NO Army Research MD 390000 0765800 69.0 2265.1 NO -174.9 -98.0 NIA -272.9 -203.1 NO NO Fort Hunter CA 355756 11211404 I 303.6 I 279.0 NO I -156.7 1 -61.6 1 N/A 1-218.41 -165.4 I NO I NO Kelly Support PA 402357 10800925 I 66.3 1 2090.2 NO 1 -174.2 1 -96.6 I NIA 1-270.8) -201.0 1 NO I NO Table Headings Radar Location : The site name of the radar system Lat (N) : Radar latitude Lon (w) : Radar Longitude Bearing (deg.) : Azimuth from earth station toward radar. Distance (mi) : Distance from earth station to radar Profile (Is path under 250 miles?) : If path is over 250 miles no OH-loss profile is generated FSL (dB) : Free Space Loss Estimated OH-Loss (dB : Using a rounded-earth model an estimated OH-loss is calculated for long paths Profiled OH-Loss (dB) : Using the NSMA Tropo Loss actual OH-loss calculcations are performed for shorter paths Total Path Loss (dB) : Total of Free Space Loss plus Over-the-Horizon loss Interfering Power Level dBW1MHz) : Level of RF interference at the earth station's LNA input In-Band Interference? : If the Radar is operating in-band is the max. permissible interference criteria being met? Out-of Band Overload? : If the Radar is operating in out-of-band spectrum is the LNA overload threshold being met? Interference Analysis Report for Nuevo, CA EO20169

6.0 Conclusions Calculations were performed to assess the electromagnetic compatibility (EMC) between the radars listed above and an adjacent-band FSS earth station receiver in Nuevo, CA. The interference assessment for 3625 - 3700 MHz at this site identified 4 cases of potential interference. However, due to their relatively low interference margin and the presence of above terrain obstacles Intelsat does not feel that these case will present any problems to the operation of this earth station. Total Number of Paths Lat (N) Lon (W) Out-of-Band In-Band 4 sites Overload? Interference? San Diego CA 324105 1170800 No Yes SOCAL4 300000 1203000 No Yes Yuma Proving A 2 330114 1141855 No Yes Fort Irwin CA 351536 1164102 No Yes Interference Analysis Report for Nuevo, CA E020169


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