Attachment EMC - Analysis

This document pretains to SES-MOD-20040315-00387 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2004031500387_369417

Intelsa inspiring connections April 5, 2004 al Department Ms. Marlene Dortch Secretary Federal Communications Commission 445 lzth Street, S.W. Washington, D.C. 20554 RE: lntelsat LLC Application of modification of radio station license: E990551 Nuevo, CA FCC File No. SES-MOD-20040315-00387 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 3.7-3.7GHz 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 woutd limit potential out-of-band interference to the receiving earth station. Respectfully submitted, lntelsat LLC Robert A. Mansbach Its Attorney lntelsat Global Service Corporation 3400 International Drive NW, Washington DC 20008-3006 USA www.intelsat.com T + 1 202-944-6800 F +1 202-944-7529

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: E990551) Prepared By COMSEARCH March 31.2004 19700 Janelia Farm Blvd 0 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-99-3612. 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 Peak transmit Power I This report is being provided as required under Footnote US 245. National Telecommunications and Information Administration, U S . DEPARTMENT OF COMMERCE, NTIA Report TR 99-361, TECHNICAL CHARACTERISTICS OF RADIOLOCATIONSYSTEMS OPERATING IN THE 3.1-3.7 GHz BAND AND PROCEDURES FOR ASSESSING EMC WITHFIXED EARTHSTATIONRECEIVERS, (December 1999). Interference Analysis Report for Nuevo, CA E99055 1

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 E99055 1 Licensee Code INTELS Licensee Name INTELSAT, LLC Site Information NUEVO, CALIFORNIA Venue Name Latitude (NAD 83) 33" 47' 46.0" N Longitude (NAD 83) 117" 5' 15.0" W Climate Zone A Rain Zone 4 Ground Elevation (AMSL) 557.76 m / 1829.9 ft Link Information Satellite Type Geostationary Mode TR - Transmit-Receive Modulation Analog and Digital Satellite Arc 50" W to 190" West Longitude Azimuth Range 103.2Oto 260.3' Corresponding Elevation Angles 10.3" i 5.5" Antenna Centerline (AGL) 6.71 m / 22.0 ft Antenna Information Receive - A40931 Transmit - A60931 Manufacturer ANDREW CORPORATION ANDREW CORPORATION Model ESA9.3-46 ESA9.3-46 Gain I Diameter 50.7 dBi I 9.3 m 53.9 dBi i 9.3 m 3-dB / 15-dB Beamwidth 0.52" / 1.00" 0.30" / 0.60" Max Available RF Power (dBW/4 kHz) -9.6 (dBW/MHz) 14.4 Maximum EIRP (dBW/4 kHz) 44.3 (dBW/MHz) 68.3 Interference Objectives: Long Term -156.0 dBW/MHz 20% -154.0 dBWi4 kHz 20% Short Term -146.0 dBWiMHz 0.01% -131.0 dBW/4 ~ H Z 0.0025% Frequency Information Receive 4.0 GHz Transmit 6.1 GHz Emission / Frequency Range (MHz) 43K8G7W - 72MOG7W / 3625.0 - 4200.0 43K8G7W - 72MOG7W / 5850.0 - 6425.0 Max Great Circle Coordination Distance 658.7 km / 409.3 mi 321.1 !an/ 199.5 mi Precipitation Scatter Contour Radius 427.7 km 1265.7 mi 100.0 km / 62.1 mi Interference Analysis Report for Nuevo, CA E99055 1

Coordination Values NUEVO. CA Licensee Name INTELSAT, LLC Latitude (NAD 83) 33" 47' 46.0" N Longitude ( N A D 83) 117" 5' 15.0" W Ground Elevation (AMSL) 557.76 m / 1829.9 ft Antenna Centerline (AGL) 6.71 m / 22.0 ft Antenna Model ANDREW CORPORATION ESA9.3-46 Antenna Mode Receive 4.0 GHz Transmit 6.1 GHz Interference Objectives: Long Term -156.0 dBW/MHz 20% -154.0 dBWI4 ~ H Z 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBW/4 ~ H Z 0.0025% Max Available RF Power -9.6 (dBWI4 W Z ) Receive 4.0 GHz Transmit 6.1 GHz Horizon Antenna Horizon Coordination Horizon Coordination Azimuth (") Elevation (") Discrimination (") Gain (dBi) Distance (h) Gain (dBi) Distance (km) 0 1.99 99.69 -10.30 193.36 -10.10 100.00 5 2.25 98.15 -10.30 187.38 -10.10 100.00 IO 3.00 93.21 -10.30 169.85 -10.10 100.00 15 3.31 88.25 -10.30 160.95 -10.10 100.00 20 3.17 83.29 -10.30 164.24 -10.10 100.00 25 3.32 78.32 -10.30 160.77 -10.10 100.00 30 3.53 73.35 -10.30 156.16 -10.10 100.00 35 3.65 68.39 -10.30 153.61 -10.10 100.00 40 3.51 63.44 -10.30 156.63 -10.10 100.00 45 3.51 58.48 -10.30 156.67 -10.10 100.00 50 3.16 53.57 -10.30 164.43 -10.10 100.00 55 2.85 48.67 -10.03 174.74 -9.83 100.00 60 2.94 43.74 -8.79 179.01 -8.85 100.00 65 3.57 38.73 -7.05 173.70 -7.59 100.00 70 3.60 33.83 -6.07 178.10 -5.87 100.00 75 3.35 29.01 -5.30 187.55 -5.10 100.00 80 3.89 24.06 -5.30 175.83 -5.10 l00.00 85 3.80 19.33 -4.76 180.73 -4.56 100.00 90 3.63 14.80 -1.10 203.03 -0.90 100.00 95 2.83 11.12 2.58 240.43 2.78 l00.00 100 3.18 7.83 7.03 263.49 7.07 103.67 105 3.38 7.16 8.38 268.76 7.74 102.55 110 4.05 9.22 5.27 228.98 5.47 100.00 115 4.14 13.09 0.61 202.59 0.81 100.00 120 4.13 17.01 -2.91 184.02 -2.71 100.00 125 4.3 1 20.72 -5.30 166.14 -5.10 100.00 130 4.07 24.59 -5.30 172.22 -5.10 100.00 135 4.66 27.78 -5.30 160.24 -5.10 100.00 140 3.98 31.65 -5.63 172.13 -5.43 100.00 145 4'37 34.57 -6.2 1 160.28 -6.0 1 100.00 150 3.86 37.88 -6.88 166.28 -7.25 100.00 155 2.89 41.27 -7.81 185.01 -8.35 100.00 160 2.35 44.02 -8.91 191.84 -8.90 100.00 165 2.99 45.31 -9.36 175.05 -9.16 100.00 170 3.53 46.13 -9.53 160.07 -9.33 100.00 175 4.00 46.45 -9.59 149.78 -9.39 100.00 180 4.57 46.14 -9.53 141.35 -9.33 100.00 185 5.42 45.05 -9.3 1 133.51 -9.1 1 100.00 Interference Analysis Report for Nuevo, CA E99055 1

Coordination Values NUEVO, CA Licensee Name INTELSAT, LLC Latitude (NAD 83) 33" 47' 46.0" N Longitude (NAD 83) 117" 5' 15.0" W Ground Elevation (AMSL) 557.76 m / 1829.9 ft Antenna Centerline (AGL) 6.71 m i 22.0 ft Antenna Model ANDREW CORPORATION ESA9.3-46 Antenna Mode Receive 4.0 GHz Transmit 6. I GHz Interference Objectives: Long Term -156.0 dBW/MHZ 20% - 154.0 dBWI4 kHz 20% Short Term -146.0 dBW/MHz 0.01% -131.0 dBWI4 ICHZ 0.0025% Max Available RF Power -9.6 (dBW/4 ~ H 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 (km) 190 5.94 43.81 -8.83 130.45 -8.86 100.00 195 6.07 42.49 -8.30 131.23 -8.60 100.00 200 6.33 40.59 -7.54 131.44 -8.22 100.00 205 6.09 38.67 -7.03 134.77 -7.57 100.00 210 5.63 36.52 -6.60 141.44 -6.71 100.00 215 5.42 33.80 -6.06 146.18 -5.86 100.00 220 6.04 30.20 -5.34 142.71 -5.14 100.00 225 5.61 27.14 -5.30 147.61 -5.10 100.00 230 5.50 23.66 -5.30 148.89 -5.10 100.00 235 5.46 19.99 -5.29 149.36 -5.09 100.00 240 5.45 16.19 -2.25 165.45 -2.05 100.00 245 5.5 1 12.26 1.44 187.77 1.64 100.00 250 4.93 8.65 6.05 218.82 6.25 100.00 255 4.35 4.96 10.85 264.26 11.05 100.00 260 3.96 1.54 26.23 658.73 26.43 321.11 265 4.03 4.92 11.01 272. I3 11.21 104.69 270 4.16 9.79 4.11 219.60 4.3 I 100.00 275 4.40 14.74 -1.04 189.61 -0.84 100.00 280 3.39 19.81 -5.15 187.46 -4.95 100.00 285 2.45 24.88 -5.30 206.64 -5.10 100.00 290 1.07 30.00 -5.30 244.01 -5.10 109.95 295 0.94 34.96 -6.29 244.16 -6.09 111.55 300 0.00 40.02 -7.3 1 302.98 -8.10 150.59 305 0.00 44.97 -9.29 289.85 -9.09 147.29 310 0.00 49.93 -10.29 283.47 -10.09 144.10 315 0.00 54.89 -10.30 283.38 -10.10 144.06 320 0.00 59.86 -10.30 283.38 -10.10 144.06 325 0.00 64.83 -10.30 283.38 -10.10 144.06 330 0.00 69.80 -10.30 283.38 -10.10 144.06 335 0.00 74.78 -10.30 283.38 -10.10 144.06 340 0.00 79.75 -10.30 283.38 -10.10 144.06 345 0.00 84.73 -10.30 283.38 -10.10 144.06 350 0.26 89.7 1 -10.30 275.77 -10.10 138.47 355 1.26 94.69 -10.30 211.02 -10.10 100.00 Interference Analysis Report for Nuevo, CA E99055 1

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, = P, + GI - FSL - OHLOSS + Ge, - LL, - LLes Where: PI : 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 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 PI 2 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=65dB 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 47CFR25.25 1 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 E99055 1

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 E99055 1

Table 4 Shipboard Radar A Land-Based Test and Training Sites - Profile (Is path Total Interfering under Estimated Profiled Path Power out-of Bearing Distance 250 FSL OH-LOSS 0H- LOSS Loss Level In-Band Band Radar Location Lat (N) Lon (w) (deg.) (mi) miles?) 0 0 0 0 (dBW1MHz) Interference? Overload? Pensacola, FL 302128 0871626 89.8 1765.1 NO -172.8 -95.0 NIA .267.' - -208.8 NO NO Pascagoula, MS 302200 0882900 90.4 1694.6 NO -172.4 -94.3 NIA -266.' - -207.8 NO NO St.lnigoes, MD 381000 0762300 70.5 2300.9 NO -175.1 -99.6 NIA -274.( -220.7 NO NO 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) (dBWIMHz) Interference? Overload? Moorestown, NJ 395849 0745630 67.0 2373.1 NO -175.3 -100.1 NIA -275.4 -205.5 NO NO Wallops Island, VA 375600 0752800 70.8 2353.2 NO -175.3 -100.0 NIA -275.2 -205.3 NO NO Portland, ME 434100 0701800 60.3 2618.1 NO -176.2 -101.8 NIA -278.0 -210.8 NO NO San Diego CA 324105 1170800 182.0 76.6 YES -145.5 -73.3 -73.3 -218.8 -152.3 YES NO 19700 Janelia Farm Blvd Ashburn, VA 20147 USA 0 703.726.5500

I: 7 0 0 7 -r s2 e, 9 e, Y 5 e - m c t .- I 0 L L a, o a

0'9L t- l'6LZ- VlN VIN VIN VlN VIN t S'ZO1- 6'101- I I -Z'ZOt- O'E01- S'9L1- Z'9Lt- P'9L1- 8'9Lt- ON ON ON ON L'SZLZ O'LZ9Z 0'1P9Z O'ZL9Z 8'0082 8'9SZ V9SZ 8'6SZ Z'09Z E'8SZ I I ON ON O'L6 1- VlN 1'8ZSZ 0'892 ON ON L'LL 1- VlN 2'2282 6'P9Z ON ON 1'8L1- VIN P'EOL- 6'9L1- ON O'198Z Z'P9Z ON ON 6'9L 1- VIN S'EELZ L'Z9Z ON ON 6'Z6 1- )'L9Z- - VlN L'89L 1 P'E6 ON ON L'E6 1- 3.892- - VIN Z'LZ8 1 EX6 ON ON S'E6 t- 7'892- - VlN 1'1181 9'16 ON ON 9'861- XLZ- VlN 8'86- IL'PLC-I ON S'ZOZZ 8'L8 ON ON Z'9L 1- 7'8LZ- VIN L'Z99Z S'09Z ~ ON ON Z'9L t- ;'8LZ- VIN L'E99Z 9.091 - ON ON Z'9L t- ;'8LZ- - VIN L'L99Z 8'092 ON ON Z'9L 1- 7'8LZ- VIN 8'0992 6'09Z 0'96 1- VIN P'PZSZ 6'96 ON ON S'P6 1- Z'10Z- 0' 1oz- VIN VIN VlN 9.001- 19.SL1- YO0 1- S'SL 1- 1 G'LLSZ P'6EPZ 6'6 1PZ '2.96 I'P6 E'P6

Table 7 Naval AtSea Operational Areas (continued] (mi) 601.8 Profile (Is path under Bearina Distance 250 miles?) NO 00 Estimated Profiled FSL OH-LOSS OH-LOSS 0dB -163.4 -76.3 NIA i Total Interfering Fzi! E:; I ~ In-Band 1 1 out-of Band dBW1MHz Interference? Overload? I I I 526.5 NO -162.2 -74.0 NIA 178.8 YES -152.9 -72.8 -72.8 329.6 NO -158.2 -65.8 NIA 2374.5 NO -175.3 -100.1 NIA 2402.2 NO -175.4 -100.3 NIA 2510.7 NO -175.8 -101.1 NIA 2538.2 NO -175.9 -101.3 NIA 2322.2 NO -175.1 -99.7 NIA VC6 1342400 10773000 77.9 2270.3 NO -174.9 -99.3 NIA vc7 1354000 10752500 75.0 2375.0 NO -175.3 -100.1 NIA IVC8 1370000 10755000 I 72.6 2339.2 NO -175.2 -99.9 NIA Interference Analysis Report for Nuevo, CA E99055 1

Table 8 Land-Based Radar Test and Training Sites Total Interfering Path Power Out-of Loss Level In-Band Band (dB) (dBW/MHz) Interference?Overload; ,251.9 -186.2 NO NO ,250.3 -184.6 NO NO ,245.9 -178.7 NO NO ,257.31 -187.3 I NO 1 NO -275.6 -205.7 I NO I NO -227.3 -161.6 I NO I NO IFort Monmouth NJ ~401900~0740215( 66.3 I 2421.5 I NO 1-175.51 -100.5 I NIA NO Interference Analysis Report for Nuevo, CA E99055 1

Profile (Is path k 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? Picatinny Arsenal NJ 405600 0743400 65.2 2391.8 NO -175.4 -100.3 NIA -275.6 -205.7 NO NO Redstone Arsenal AL 343630 0863610 79.6 1746.8 NO -172.7 -94.8 NIA -267.5 -196.7 NO NO White Sands NM 322246 1062813 96.1 623.6 NO -163.7 -76.9 NIA -240.6 -172.6 NO NO Army Research MD 390000 0765800 69.0 2265.1 NO -174.9 -99.3 NIA -274.2 -204.3 Fort Hunter CA 355756 1211404 303.6 279.0 NO -156.7 -62.9 NIA -219.7 -166.0 Kelly Support PA 402357 0800925 66.3 2090.2 NO -174.2 -97.9 NIA -272.1 -202.2 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 calculations are performed for shorter paths Total Path Loss (dB) : Total of Free Space Loss plus Over-the- Horizon loss Interfering Power Level : Level of RF interference at the earth (dBW/MHz) 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 E99055 1

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 Yuma Proving AZ 330114 1141855 No Yes SOCAL4 300000 1203000 No Yes Fort Irwin CA 351536 1164102 No Yes Interference Analysis Report for Nuevo, CA E99055 1


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