Attachment Exhibit C

This document pretains to SES-MFS-20110204-00111 for Modification w/ Foreign Satellite (earth station) on a Satellite Earth Station filing.

IBFS_SESMFS2011020400111_867273

1[ | | I | Exhibit C Interference Analysis Report An Assessment of the Impact of Radiolocation Systems Operating in 3.1—3.7 GHz Band on Fixed Satellite Services Karth Station Receiver Prepared for Ihtelsat License LLC TRANSMIT—RECEIVE EARTH STATION (15.2 METER) FCC CALL SIGN: E950307 Site Name: Napa, California _ Prepared By COMSEARCH January 20, 2011 19700 Janelia Farm Blyd. * Ashburn, Virginia 20147 USA e 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 band1. The geographical positions and operating parameters of these systems was derived from NTIA Document TR-99-3612. 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 Characteristic Shipboard System A Shipboard System B Ground Based System Modulation P0N Q7N P0N Tuning Range (GHz) 3.5-3.7 3.1-3.5 3.1-3.4 Peak transmit Power 1 4 0.12 (MW) Pulse Width (µsec.) 1.0 3.5-51.2 10.75 Pulse Repetition Rate 1.125 0.152-6.0 2793.3-5050.51 (kHz) Duty Cycle (%) 0.001 0.8-2.0 0.041 Transmit 3-dB 4,16.6 4 1,10 Bandwidth (MHz) Antenna Type Reflector Phased Array Phase Scan Array Antenna Mainbeam 32 42 36 Gain (dBi) Antenna Centerline (m) 46 20 46 1 This report is being provided as required under Footnote US 245. 2 National Telecommunications and Information Administration, U.S. 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 ASSESSING EMC WITH FIXED EARTH STATION RECEIVERS, (December 1999). Interference Analysis Report for Napa, California

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 Administrative Information Status ENGINEER PROPOSAL Call Sign E950307 Licensee Code PANAS Licensee Name Intelsat License LLC Site Information NAPA, CALIFORNIA Venue Name Latitude (NAD 83) 38° 14' 43.7" N Longitude (NAD 83) 122° 16' 50.9" W Climate Zone B Rain Zone 3 Ground Elevation (AMSL) 7.62 m / 25.0 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Analog and Digital Satellite Arc 58° W to 194° West Longitude Azimuth Range 106.6° to 258.4° Corresponding Elevation Angles 11.4° / 5.6° Antenna Centerline (AGL) 7.62 m / 25.0 ft Antenna Information Receive Transmit Manufacturer Vertex Corp. Vertex Corp. Model 15.2 KPC 15.2 KPC Gain / Diameter 54.9 dBi / 15.2 m 58.4 dBi / 15.2 m 3-dB / 15-dB Beamwidth 0.34° / 0.70° 0.22° / 0.44° 950KFXD 72MOG7D 1M00G7D Max Available RF Power (dBW/4 kHz) -5.2 -28.0 -18.5 (dBW/MHz) 18.6 -4.0 5.5 Maximum EIRP (dBW/4 kHz) 53.2 30.4 39.9 (dBW/MHz) 77.0 54.4 63.9 (dBW) 77.0 73.0 63.9 Interference Objectives: Long Term -156.0 dBW/MHz 20% -154.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBW/4 kHz 0.0025% Frequency Information Receive 4.0 GHz Transmit 6.1 GHz Emission / Frequency Range (MHz) 200KFXD / 3947.5 950KFXD / 6173.7 200KFXD / 3948.0 950KFXD / 6176.3 200KFXD / 3952.0 1M00G7D/ 5850.0 – 5925.0 200KFXD / 3952.5 72M0G7D/ 5850.0 – 5925.0 60M0G7D/ 3625.0 – 3700.0 Max Great Circle Coordination Distance 783.4 km / 486.7 mi 411.7 km / 255.8 mi Precipitation Scatter Contour Radius 426.1 km / 264.8 mi 100.0 km / 62.1 mi Interference Analysis Report for Napa, California

Coordination Values NAPA, CA Licensee Name Intelsat License LLC Latitude (NAD 83) 38° 14' 43.7" N Longitude (NAD 83) 122° 16' 50.9" W Ground Elevation (AMSL) 7.62 m / 25.0 ft Antenna Centerline (AGL) 7.62 m / 25.0 ft Antenna Model Vertex Corporation 15.2 KPC Antenna Mode Receive 4.0 GHz Transmit 6.1 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -154.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBW/4 kHz 0.0025% Max Available RF Power -5.2 (dBW/4 kHz) Receive 4.0 GHz Transmit 6.1 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 0 0.00 101.50 -10.00 412.20 -10.00 186.59 5 0.00 101.37 -10.00 412.20 -10.00 186.59 10 0.89 96.49 -10.00 265.31 -10.00 119.35 15 0.82 91.58 -10.00 275.46 -10.00 123.51 20 0.47 86.67 -10.00 330.42 -10.00 147.65 25 0.35 81.76 -10.00 361.42 -10.00 162.69 30 0.85 76.84 -10.00 270.63 -10.00 121.52 35 2.10 71.86 -10.00 195.78 -10.00 100.00 40 1.45 66.98 -10.00 228.14 -10.00 105.59 45 2.61 61.97 -10.00 177.19 -10.00 100.00 50 2.86 57.02 -10.00 169.19 -10.00 100.00 55 3.14 52.08 -10.00 160.95 -10.00 100.00 60 3.65 47.10 -9.83 149.00 -9.83 100.00 65 4.37 42.09 -8.60 142.60 -8.60 100.00 70 4.70 37.13 -7.24 145.11 -7.24 100.00 75 4.35 32.30 -5.73 155.20 -5.73 100.00 80 4.14 27.51 -3.99 166.08 -3.99 100.00 85 4.11 22.75 -1.92 177.49 -1.92 100.00 90 3.72 18.25 0.47 201.62 0.47 100.00 95 3.07 14.25 3.15 242.84 3.15 109.24 100 3.51 10.27 6.71 251.06 6.71 112.40 105 2.99 8.56 8.68 316.07 8.68 141.88 110 2.73 9.31 7.78 294.32 7.78 127.70 115 3.04 11.82 5.18 258.75 5.18 115.39 120 3.76 14.99 2.60 213.43 2.60 100.00 125 4.27 18.20 0.50 188.95 0.50 100.00 130 4.49 21.47 -1.30 176.23 -1.30 100.00 135 4.14 25.01 -2.95 171.54 -2.95 100.00 140 3.94 28.27 -4.28 167.96 -4.28 100.00 145 2.78 32.08 -5.65 196.22 -5.65 100.00 150 4.22 33.57 -6.15 154.61 -6.15 100.00 155 4.22 35.88 -6.87 151.28 -6.87 100.00 160 3.96 38.09 -7.52 151.64 -7.52 100.00 165 3.58 40.02 -8.06 158.74 -8.06 100.00 170 3.19 41.55 -8.46 167.00 -8.46 100.00 175 2.85 42.60 -8.74 176.04 -8.74 100.00 180 2.53 43.17 -8.88 186.53 -8.88 100.00 185 2.22 43.22 -8.89 197.72 -8.89 100.00 Interference Analysis Report for Napa, California

TABLE 3 - TABLE OF EARTH STATION COORDINATION VALUES (continued) Coordination Values NAPA, CA Licensee Name Intelsat License LLC Latitude (NAD 83) 38° 14' 43.7" N Longitude (NAD 83) 122° 16' 50.9" W Ground Elevation (AMSL) 7.62 m / 25.0 ft Antenna Centerline (AGL) 7.62 m / 25.0 ft Antenna Model Vertex Corporation 15.2 KPC Antenna Mode Receive 4.0 GHz Transmit 6.1 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -154.0 dBW/4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBW/4 kHz 0.0025% Max Available RF Power -5.2 (dBW/4 kHz) Receive 4.0 GHz Transmit 6.1 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (°) Elevation (°) Discrimination (°) Gain (dBi) Distance (km) Gain (dBi) Distance (km) 190 1.90 42.80 -8.79 212.22 -8.79 100.00 195 1.53 41.93 -8.56 233.25 -8.56 107.39 200 0.92 40.79 -8.26 275.23 -8.26 122.89 205 0.52 39.03 -7.78 340.35 -7.78 151.18 210 0.00 36.98 -7.20 448.50 -7.20 202.49 215 0.00 34.21 -6.35 460.06 -6.35 207.39 220 0.00 31.20 -5.36 473.50 -5.36 213.30 225 0.00 28.00 -4.18 490.61 -4.18 220.42 230 0.00 24.63 -2.79 511.67 -2.79 229.08 235 0.00 21.13 -1.12 538.04 -1.12 239.79 240 0.00 17.51 0.92 571.97 0.92 253.36 245 0.22 13.67 3.60 608.53 3.60 265.87 250 0.26 9.89 7.12 652.78 7.12 283.37 255 0.21 6.40 11.85 783.40 11.85 341.48 260 0.31 5.52 13.46 755.53 13.46 411.69 265 0.45 8.34 8.97 595.42 8.97 257.42 270 0.49 12.63 4.47 499.83 4.47 219.97 275 0.50 17.31 1.04 448.83 1.04 198.25 280 0.46 22.14 -1.63 425.93 -1.63 188.57 285 0.51 27.01 -3.79 383.25 -3.79 169.92 290 0.87 31.88 -5.59 305.55 -5.59 134.85 295 0.97 36.81 -7.15 277.73 -7.15 123.59 300 0.81 41.79 -8.53 288.46 -8.53 128.51 305 1.19 46.72 -9.74 244.67 -9.74 112.40 310 0.80 51.72 -10.00 277.19 -10.00 124.23 315 0.89 56.69 -10.00 266.50 -10.00 119.83 320 0.99 61.66 -10.00 255.51 -10.00 116.76 325 1.11 66.64 -10.00 246.99 -10.00 113.40 330 0.84 71.63 -10.00 272.83 -10.00 122.42 335 0.00 76.63 -10.00 412.20 -10.00 186.59 340 0.00 81.60 -10.00 412.20 -10.00 186.59 345 0.00 86.58 -10.00 412.20 -10.00 186.59 350 0.00 91.55 -10.00 412.20 -10.00 186.59 355 0.00 96.53 -10.00 412.20 -10.00 186.59 Interference Analysis Report for Napa, California

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: Pr = Pt + Gt – FSL – OHLOSS + Ges – LLt - LLes Where: Pr : Interference power level received at victim earth station, in dBW Pt: Transmitter power of Radiolocation system, in dBW Gt: 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 LLt: Line losses of the radiolocation system, in dB (assume 2dB per NTIA report) LLes: 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 includes the input saturation threshold value minus a 10 dB output backoff value to consider in operation levels The maximum interference power receive, Pr, allowable then becomes: Max Pr > 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. 3 FCC Rules 47CFR25.251 by reference ITU Radio Regulations Appendix S7. 4 National Spectrum Managers Association has developed an industry accepted version which incorporates NBS Tech Note 101. Interference Analysis Report for Napa, California

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 Napa, California

Table 4 Shipboard Radar A Land-Based Test and Training Sites Radar Lat (N) Lon (w) Bearing Distance Profile (Is FSL (dB) Estimated Profiled Total Path Interfering In-Band Out-of Location (deg.) (mi) path OH-Loss OH-Loss Loss (dB) Power Level Interference? Band under 250 (dB) (dB) (dBW/MHz) Overload? miles?) Pensacola, FL 302128 0871626 95.3 2075.0 NO -174.2 -97.5 N/A -271.6 -204.9 NO NO Pascagoula, MS 302200 0882900 96.2 2008.0 NO -173.9 -96.9 N/A -270.8 -204.1 NO NO St.Inigoes, MD 381000 0762300 75.9 2498.0 NO -175.8 -100.7 N/A -276.5 -220.5 NO NO Table 5 Shipboard Radar B Land-Based Test and Training Sites Radar Lat (N) Lon (w) Bearing Distance Profile (Is FSL (dB) Estimated Profiled Total Path Interfering In-Band Out-of Location (deg.) (mi) path OH-Loss OH-Loss Loss (dB) Power Level Interference? Band under 250 (dB) (dB) (dBW/MHz) Overload? miles?) Moorestown, NJ 395849 0745630 72.4 2547.0 NO -175.9 -101.0 N/A -277.0 -208.2 NO NO Wallops Island, VA 375600 0752800 76.0 2552.0 NO -176.0 -101.1 N/A -277.0 -205.0 NO NO Table 6 Shipboard Radars A and B Home Ports Radar Lat (N) Lon (w) Bearing Distance Profile (Is FSL (dB) Estimated Profiled Total Path Interfering In-Band Out-of Location (deg.) (mi) path OH-Loss OH-Loss Loss (dB) Power Level Interference? Band under 250 (dB) (dB) (dBW/MHz) Overload? miles?) Bath, ME 435425 0694848 64.6 2767.6 NO -176.7 -102.5 N/A -279.1 -212.9 NO NO Bremerton, WA 473324 1223811 358.5 643.0 NO -164.0 -77.1 N/A -241.1 -165.1 NO NO Everett, WA 475858 1221354 0.2 672.2 NO -164.4 -77.9 N/A -242.3 -176.2 NO NO Mayport, FL 302334 0812427 91.5 2399.4 NO -175.4 -100.0 N/A -275.4 -198.9 NO NO Norfolk, VA 365200 0762100 78.2 2523.6 NO -175.9 -100.9 N/A -276.7 -204.7 NO NO Pascagoula, MS 302253 0882933 96.1 2007.1 NO -173.9 -96.9 N/A -270.8 -188.0 NO NO Pearl Harbor, HI 212000 1580000 250.4 2441.8 NO -175.6 -100.3 N/A -275.9 -192.7 NO NO Portland, ME 434100 0701800 65.1 2744.8 NO -176.6 -102.3 N/A -278.9 -210.1 NO NO San Diego CA 324105 1170800 141.4 480.9 NO -161.5 -72.1 -73.3 -233.5 -161.8 NO NO Interference Analysis Report for Napa, California

Table 7 Naval At-Sea Operational Areas Operational Lat (N) Lon (w) Bearing Distance Profile (Is FSL (dB) Estimated Profiled Total Path Interfering In-Band Out-of Area (deg.) (mi) path OH-Loss OH-Loss Loss (dB) Power Level Interference? Band under 250 (dB) (dB) (dBW/MHz) Overload? miles?) AFWTF North Range AFWTF (NR)1 183000 0670000 98.9 3631.3 NO -179.0 -107.2 N/A -286.2 -203.5 NO NO AFWTF (NR)2 200000 0670000 97.1 3571.5 NO -178.9 -106.9 N/A -285.8 -203.1 NO NO AFWTF (NR)3 221000 0654800 93.9 3556.1 NO -178.8 -106.8 N/A -285.7 -209.2 NO NO AFWTF (NR)4 221000 0652000 93.7 3582.7 NO -178.9 -107.0 N/A -285.9 -209.4 NO NO AFWTF (NR)5 185000 0620000 95.6 3902.0 NO -179.6 -108.4 N/A -288.1 -205.4 NO NO AFWTF (NR)6 185000 0620000 95.6 3902.0 NO -179.6 -108.4 N/A -288.1 -205.4 NO NO AFWTF (NR)7 182500 0643000 97.5 3776.2 NO -179.4 -107.9 N/A -287.2 -204.5 NO NO AFWTF (NR)8 183000 0644500 97.5 3758.7 NO -179.3 -107.8 N/A -287.1 -204.4 NO NO AFWTF (NR)9 183000 0663800 98.6 3652.0 NO -179.1 -107.3 N/A -286.4 -203.6 NO NO AFWTF (South Range) AFWTF (SR1) 180500 0675500 99.9 3596.5 NO -178.9 -107.0 N/A -286.0 -203.2 NO NO AFWTF (SR2) 180500 0652700 98.4 3735.8 NO -179.3 -107.7 N/A -287.0 -204.2 NO NO AFWTF (SR3) 181500 0651000 98.1 3745.1 NO -179.3 -107.7 N/A -287.0 -204.3 NO NO AFWTF (SR4) 181500 0641000 97.5 3801.9 NO -179.4 -108.0 N/A -287.4 -204.7 NO NO AFWTF (SR5) 170000 0641000 98.8 3852.8 NO -179.5 -108.2 N/A -287.8 -205.0 NO NO AFWTF (SR6) 165800 0642800 99.1 3837.1 NO -179.5 -108.2 N/A -287.7 -204.9 NO NO AFWTF (SR7 153300 0660600 101.5 3803.8 NO -179.4 -108.0 N/A -287.4 -204.7 NO NO AFWTF (SR8) 153900 0662300 101.6 3783.7 NO -179.4 -107.9 N/A -287.3 -204.6 NO NO AFWTF (SR9) 163000 0662300 100.7 3748.1 NO -179.3 -107.7 N/A -287.0 -204.3 NO NO AFWTF(SR10 163000 0675500 101.6 3661.9 NO -179.1 -107.3 N/A -286.4 -203.7 NO NO Interference Analysis Report for Napa, California

Table 7 Naval At-Sea Operational Areas (continued) Operational Lat (N) Lon (w) Bearing Distance Profile (Is FSL (dB) Estimated Profiled Total Path Interfering In-Band Out-of Area (deg.) (mi) path OH-Loss OH-Loss Loss (dB) Power Level Interference? Band under 250 (dB) (dB) (dBW/MHz) Overload? miles?) AUTEC AUTEC1 252000 0780500 97.2 2749.0 NO -176.6 -102.4 N/A -279.0 -196.2 NO NO AUTEC2 252000 0774500 97.0 2767.5 NO -176.7 -102.5 N/A -279.1 -196.4 NO NO AUTEC3 232500 0762000 98.7 2916.3 NO -177.1 -103.4 N/A -280.5 -197.8 NO NO AUTEC4 232500 0771500 99.3 2865.3 NO -177.0 -103.1 N/A -280.0 -197.3 NO NO FORACS, Hawaii FORACS 1 212530 1581100 250.7 2447.6 NO -175.6 -100.3 N/A -275.9 -192.8 NO NO FORACS2 212100 1581500 250.6 2454.3 NO -175.6 -100.4 N/A -276.0 -192.9 NO NO FORACS3 211500 1580800 250.4 2452.4 NO -175.6 -100.4 N/A -276.0 -192.8 NO NO FORACS4 211500 1580700 250.4 2451.5 NO -175.6 -100.4 N/A -276.0 -192.8 NO NO Gulf of Mexico OPAREA GoM1 293601 0800130 92.0 2500.0 NO -175.8 -100.7 N/A -276.5 -200.0 NO NO GoM2 292521 0864800 96.7 2129.4 NO -174.4 -97.9 N/A -272.3 -189.6 NO NO GoM3 284101 0864800 98.0 2152.8 NO -174.5 -98.1 N/A -272.6 -189.9 NO NO GoM4 285231 0874400 98.4 2095.4 NO -174.2 -97.6 N/A -271.9 -189.2 NO NO Pacific Missile Range Facility (PMRF) PMRF1 220000 1594500 252.9 2507.2 NO -175.8 -100.8 N/A -276.6 -193.4 NO NO PMRF2 220800 1620000 255.0 2623.2 NO -176.2 -101.5 N/A -277.7 -194.6 NO NO PMRF3 224500 1614000 255.6 2580.6 NO -176.1 -101.3 N/A -277.3 -187.8 NO NO PMRF4 260000 1581500 257.8 2271.7 NO -174.9 -99.0 N/A -274.0 -184.5 NO NO Pearl Harbor South OPAREA PHS1 190800 1591500 248.5 2602.4 NO -176.1 -101.4 N/A -277.5 -194.4 NO NO PHS2 210000 1580800 250.0 2462.9 NO -175.6 -100.5 N/A -276.1 -193.0 NO NO PHS3 210000 1573600 249.5 2434.9 NO -175.5 -100.3 N/A -275.8 -192.7 NO NO Interference Analysis Report for Napa, California

PHS4 191800 1562000 245.9 2443.7 NO -175.6 -100.3 N/A -275.9 -192.8 NO NO PHS5 184900 1574500 246.7 2538.4 NO -175.9 -101.0 N/A -276.9 -193.7 NO NO Table 7 Naval At-Sea Operational Areas (continued) Operational Lat (N) Lon (w) Bearing Distance Profile (Is FSL (dB) Estimated Profiled Total Path Interfering In-Band Out-of Area (deg.) (mi) path OH-Loss OH-Loss Loss (dB) Power Level Interference? Band under 250 (dB) (dB) (dBW/MHz) Overload? miles?) Southern California (SOCAL) SOCAL1 385200 1255200 283.6 198.9 YES -153.8 -71.8 -71.8 -225.6 -151.2 YES NO SOCAL2 390000 1240000 299.8 106.6 YES -148.4 -62.5 -62.5 -210.9 -143.4 YES NO SOCAL3 311500 1163000 144.1 583.7 NO -163.1 -75.4 -72.8 -238.6 -166.8 NO NO SOCAL4 300000 1203000 169.3 577.4 NO -163.0 -75.3 N/A -238.3 -170.7 NO NO Virginia Capes OPAREA VC1 384500 0750000 74.5 2563.2 NO -176.0 -101.1 N/A -277.1 -208.4 NO NO VC2 384500 0743000 74.4 2590.3 NO -176.1 -101.3 N/A -277.4 -208.6 NO NO VC3 374500 0724000 75.5 2708.1 NO -176.5 -102.1 N/A -278.6 -206.5 NO NO VC4 350600 0724000 79.7 2764.4 NO -176.7 -102.5 N/A -279.1 -207.1 NO NO VC5 320000 0771200 86.6 2589.4 NO -176.1 -101.3 N/A -277.4 -200.9 NO NO VC6 342400 0773000 82.8 2512.7 NO -175.8 -100.8 N/A -276.6 -204.6 NO NO VC7 354000 0752500 79.8 2599.7 NO -176.1 -101.4 N/A -277.5 -205.5 NO NO VC8 370000 0755000 77.8 2549.4 NO -175.9 -101.0 N/A -277.0 -205.0 NO NO Table 8 Land-Based Radar Test and Training Sites Radar Lat (N) Lon (w) Bearing Distance Profile (Is FSL (dB) Estimated Profiled Total Path Interfering In-Band Out-of Location (deg.) (mi) path OH-Loss OH-Loss Loss (dB) Power Level Interference? Band under 250 (dB) (dB) (dBW/MHz) Overload? miles?) Fort Lewis WA 470525 1223510 358.6 610.7 NO -163.5 -76.2 N/A -239.8 -163.7 NO NO Yakima Firing WA 464018 1202135 8.9 589.8 NO -163.2 -75.6 N/A -238.9 -172.8 NO NO Fort Carson CO 383810 1044750 82.9 948.9 NO -167.4 -83.9 N/A -251.2 -179.2 NO NO Fort Rliey KS 385813 0965139 80.0 1376.7 NO -170.6 -90.3 N/A -260.9 -188.9 NO NO Fort Shafter HI 211800 1574900 250.2 2433.5 NO -175.5 -100.2 N/A -275.8 -192.6 NO NO Interference Analysis Report for Napa, California

Hunter AAF GA 320100 0810800 88.6 2369.6 NO -175.3 -99.8 N/A -275.1 -198.6 NO NO Fort Gillem GA 333600 0841900 87.4 2153.0 NO -174.5 -98.1 N/A -272.6 -196.1 NO NO Fort Benning GA 322130 0845815 90.1 2147.3 NO -174.5 -98.1 N/A -272.5 -196.0 NO NO Fort Stewart GA 315145 0813655 89.1 2346.9 NO -175.2 -99.6 N/A -274.8 -198.3 NO NO Fort Rucker AL 311947 0854255 92.5 2133.5 NO -174.4 -98.0 N/A -272.4 -195.9 NO NO Yuma Proving AZ 330114 1141855 126.5 575.1 NO -163.0 -75.2 -72.8 -238.2 -163.5 NO NO Fort Hood TX 310830 0974550 102.4 1479.3 NO -171.2 -91.6 N/A -262.8 -180.1 NO NO Fort Knox KY 375350 0855655 79.5 1981.2 NO -173.8 -96.7 N/A -270.4 -198.4 NO NO Fort Bragg NC 350805 0790035 82.2 2412.6 NO -175.5 -100.1 N/A -275.6 -203.5 NO NO Fort Campbell KY 363950 0872820 82.7 1916.9 NO -173.5 -96.1 N/A -269.6 -197.5 NO NO Fort Polk LA 310343 0931226 98.4 1728.6 NO -172.6 -94.3 N/A -266.9 -184.1 NO NO Fort Leonard MO 374430 0920737 81.9 1646.2 NO -172.1 -93.5 N/A -265.6 -193.6 NO NO Fort Irwin CA 351536 1164102 121.9 372.6 NO -159.2 -114.4 -114.4 -273.6 -195.0 NO NO Fort Sill OK 344024 0982352 93.4 1352.9 NO -170.4 -90.0 N/A -260.5 -184.0 NO NO Fort Bliss TX 314850 1062533 111.7 1002.4 NO -167.8 -84.8 N/A -252.7 -183.9 NO NO Fort Leavenworth KS 392115 0945500 78.5 1479.1 NO -171.2 -91.6 N/A -262.8 -190.8 NO NO Fort Drum NY 440115 0754844 65.4 2457.0 NO -175.6 -100.4 N/A -276.0 -207.3 NO NO Fort Gordon GA 332510 0820910 86.7 2277.4 NO -175.0 -99.1 N/A -274.1 -197.6 NO NO Fort McCoy WI 440636 0904127 65.8 1696.1 NO -172.4 -94.0 N/A -266.4 -197.6 NO NO Fort Dix NJ 400025 0743713 72.2 2563.8 NO -176.0 -101.1 N/A -277.1 -208.4 NO NO Parks Reserve CA 374254 1214218 139.2 48.2 YES -141.5 -74.1 -74.1 -215.6 -143.8 YES NO Aberdeen Proving MD 392825 0760655 73.6 2491.4 NO -175.7 -100.6 N/A -276.4 -207.6 NO NO Fort Huachuca AZ 313500 1102000 120.7 819.2 NO -166.1 -81.3 N/A -247.4 -183.8 NO NO Fort Monmouth NJ 401900 0740215 71.6 2590.5 NO -176.1 -101.3 N/A -277.4 -208.6 NO NO Picatinny Arsenal NJ 405600 0743400 70.6 2553.7 NO -176.0 -101.1 N/A -277.0 -208.3 NO NO Interference Analysis Report for Napa, California

Table 8 Land-Based Radar Test and Training Sites (continued) Radar Lat (N) Lon (w) Bearing Distance Profile (Is FSL (dB) Estimated Profiled Total Path Interfering In-Band Out-of Location (deg.) (mi) path OH-Loss OH-Loss Loss (dB) Power Level Interference? Band under 250 (dB) (dB) (dBW/MHz) Overload? miles?) Redstone Arsenal AL 343630 0863610 86.6 2003.8 NO -173.9 -96.9 N/A -270.7 -194.2 NO NO White Sands NM 322246 1062813 109.8 980.7 NO -167.6 -84.5 N/A -252.1 -183.3 NO NO Army Research MD 390000 0765800 74.6 2452.6 NO -175.6 -100.4 N/A -276.0 -207.2 NO NO Fort Hunter CA 355756 1211404 159.5 167.5 YES -152.3 -89.0 -89 -241.3 -187.8 NO NO Kelly Support PA 402357 0800925 72.9 2262.0 NO -174.9 -99.0 N/A -273.9 -205.1 NO 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 (dBW/MHz) : 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 Napa, California

6.0 Conclusions Calculations were performed to assess the electromagnetic compatibility (EMC) between the radars listed below and adjacent-band FSS earth station receiver at Napa, California. Interference assessment for Earth Stations Operating at 3625 - 3700 MHz at Napa, California site identified 3 cases of In-band potential interference. The applicant is aware of this potential for interference and will work with the Government Users to mitigate the problem. Results Total Number of Paths Lat (N) Lon (W) Out-of-Band In-Band 11 sites Overload? Interference? SOCAL 1, 385200 1255200 No Yes SOCAL 2, 390000 1240000 No Yes Parks Reserve, CA 374254 1214218 No Yes Interference Analysis Report for Napa, California


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