Attachment EMC_Bristow152

This document pretains to SES-MFS-20130814-00731 for Modification w/ Foreign Satellite (earth station) on a Satellite Earth Station filing.

IBFS_SESMFS2013081400731_1006474

                            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

                                SES Americom, Inc.

              TRANSMIT-RECEIVE EARTH STATION (9.0 METER)

                            Site Name: Bristow, Virginia
                                 (Call Sign: E000152)




                                    Prepared By




                                   August 5, 2013




     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 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 Bristow, Virginia


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                                E000152
Licensee Code                            P3210
Licensee Name                            SES Americom, Inc.

Site Information                         BRISTOW, VIRGINIA
Venue Name
Latitude (NAD 83)                        38° 47' 1.6" N
Longitude (NAD 83)                       77° 34' 24.3" W
Climate Zone                             A
Rain Zone                                2
Ground Elevation (AMSL)                  86.47 m / 283.7 ft

Link Information
Satellite Type                           Geostationary
Mode                                     TR - Transmit-Receive
Modulation                               Analog and Digital
Satellite Arc                            10° W to 139° West Longitude
Azimuth Range                            104.5° to 251.2°
Corresponding Elevation Angles           8.7° / 13.4°
Antenna Centerline (AGL)                 6.71 m / 22.0 ft

Antenna Information                             Receive                                    Transmit
Manufacturer                                    Vertex Corporation                         Vertex Corporation
Model                                           9 Meter KPC                                9 Meter KPC
Gain / Diameter                                 50.1 dBi / 9.0 m                           53.2 dBi / 9.0 m
3-dB / 15-dB Beamwidth                          0.53° / 1.00°                              0.38° / 0.72°

Max Available RF Power        (dBW/4 kHz)                                                  SEE ATTACHMENT 1
                              (dBW/MHz)                                                    SEE ATTACHMENT 1

Maximum EIRP                  (dBW/4 kHz)                                                  SEE ATTACHMENT 1
                              (dBW/MHz)                                                    SEE ATTACHMENT 1
                              (dBW)                                                        SEE ATTACHMENT 1

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)                SEE ATTACHMENT 1                           SEE ATTACHMENT 1


Max Great Circle Coordination Distance          471.4 km / 292.9 mi                        279.7 km / 173.8 mi
Precipitation Scatter Contour Radius            555.5 km / 345.1 mi                        153.6 km / 95.5 mi




                                            Interference Analysis Report for Bristow, Virginia


                                                                                       ATTACHMENT 1
                                                                                         Page 1 of 2


                                    Vertex Corporation:
                                    Model: 9 Meter KPC
                                    Call Sign: E000152


                                   4 GHz Gain: 50.1 dBi
                                   6 GHz Gain: 53.2 dBi


Satellite Arc: 10.0 to 60.0 West Longitude

    Receive Band:          3625.0 to 3700.0 MHz


                                          Emissions

                                 N0N
                                 500KG7D
                                 20M0G7W – 72M0G7W


Satellite Arc: 10.0 to 139.0 West Longitude

    Receive Band:          3700.0 to 4200.0 MHz


                                          Emissions

                                 N0N
                                 500KG7D
                                 20M0G7W – 72M0G7W

   -------------------------------------------------------------------------------------------------

Satellite Arc: 10.0 to 60.0 West Longitude

    Transmit Band:         5850.0 to 5925.0 MHz

                                 RF Power Density            EIRP/Carrier           EIRP Density
         Emission                  (dBW/4 kHz)                 (dBW)                 (dBW/ 4 kHz)

         N0N                            -0.5                     52.7                      52.7
         900KF1D                        -2.7                     74.0                      50.5
         20M0G7W to                    -24.0                     66.2                      29.2
           72M0G7W                     -24.0                     71.8                      29.2


                                           Interference Analysis Report for Bristow, Virginia


                                                                            ATTACHMENT 1
                                                                              Page 2 of 2



Satellite Arc: 10.0 to 139.0 West Longitude


    Transmit Band:     5925.0 to 6425.0 MHz

                             RF Power Density        EIRP/Carrier         EIRP Density
         Emission              (dBW/4 kHz)             (dBW)               (dBW/ 4 kHz)

        N0N                        -0.5                 52.7                    52.7
        900KF1D                    -2.7                 74.0                    50.5
        20M0G7W to                -24.0                 66.2                    29.2
          72M0G7W                 -24.0                 71.8                    29.2




Satellite Arc: 10.0 to 60.0 West Longitude


    Transmit Band:     6491.0 to 6650.0 MHz

                             RF Power Density        EIRP/Carrier         EIRP Density
         Emission              (dBW/4 kHz)             (dBW)               (dBW/ 4 kHz)

        N0N                        -0.5                 52.7                    52.7
        900KF1D                    -2.7                 74.0                    50.5
        20M0G7W to                -24.0                 66.2                    29.2
          72M0G7W                 -24.0                 71.8                    29.2




                                     Interference Analysis Report for Bristow, Virginia


Coordination Values                       BRISTOW, VA
Licensee Name                             SES Americom, Inc.
Latitude (NAD 83)                         38° 47' 1.6" N
Longitude (NAD 83)                        77° 34' 24.3" W
Ground Elevation (AMSL)                   86.47 m / 283.7 ft
Antenna Centerline (AGL)                  6.71 m / 22.0 ft
Antenna Model                             Vertex Corporation 9 Meter 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                                                                     -0.5 (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                 0.66                    104.35                  -10.00           239.54                -10.00           138.38
 5                 0.77                     99.41                  -10.00           232.97                -10.00           133.19
 10                0.65                     94.45                  -10.00           240.25                -10.00           138.94
 15                0.73                     89.50                  -10.00           235.27                -10.00           134.98
 20                0.66                     84.55                  -10.00           239.86                -10.00           138.63
 25                0.61                     79.60                  -10.00           242.72                -10.00           140.94
 30                0.44                     74.66                  -10.00           255.95                -10.00           151.90
 35                0.32                     69.73                  -10.00           270.82                -10.00           164.94
 40                0.33                     64.79                  -10.00           269.50                -10.00           163.75
 45                0.38                     59.85                  -10.00           263.66                -10.00           158.59
 50                0.40                     54.92                  -10.00           260.54                -10.00           155.86
 55                0.00                     50.06                  -10.00           285.28                -10.00           179.20
 60                0.00                     45.16                   -9.37           289.32                 -9.37           181.63
 65                0.00                     40.29                   -8.13           297.45                 -8.13           186.41
 70                0.00                     35.45                   -6.74           306.87                 -6.74           191.76
 75                0.00                     30.64                   -5.16           318.56                 -5.16           197.82
 80                0.00                     25.91                   -3.34           331.67                 -3.34           204.77
 85                0.00                     21.28                   -1.20           347.49                 -1.20           211.45
 90                0.00                     16.86                    1.33           366.88                  1.33           221.98
 95                0.00                     12.85                    4.27           389.72                  4.27           235.21
100                0.21                      9.60                    7.45           414.35                  7.45           248.37
105                0.32                      8.39                    8.90           471.41                  8.90           279.71
110                0.56                      9.82                    7.20           371.79                  7.20           215.93
115                0.66                     13.16                    4.02           337.41                  4.02           198.27
120                0.69                     16.81                    1.36           314.25                  1.36           185.30
125                0.73                     20.34                   -0.71           294.97                 -0.71           173.64
130                0.81                     23.74                   -2.39           277.43                 -2.39           159.73
135                0.89                     27.00                   -3.79           262.71                 -3.79           149.44
140                0.88                     30.16                   -4.99           255.85                 -4.99           145.35
145                0.85                     33.13                   -6.01           251.20                 -6.01           142.81
150                0.81                     35.87                   -6.87           248.37                 -6.87           141.63
155                0.64                     38.42                   -7.61           254.98                 -7.61           147.79
160                0.52                     40.61                   -8.22           259.33                 -8.22           152.23
165                0.23                     42.56                   -8.73           289.21                 -8.73           180.57
170                0.34                     43.72                   -9.02           274.53                 -9.02           168.36
175                0.35                     44.48                   -9.20           271.74                 -9.20           164.53
180                0.25                     44.84                   -9.29           283.63                 -9.29           176.72
185                0.00                     44.83                   -9.29           289.85                 -9.29           181.95




                                            Interference Analysis Report for Bristow, Virginia


Coordination Values                       BRISTOW, VA
Licensee Name                             SES Americom, Inc.
Latitude (NAD 83)                         38° 47' 1.6" N
Longitude (NAD 83)                        77° 34' 24.3" W
Ground Elevation (AMSL)                   86.47 m / 283.7 ft
Antenna Centerline (AGL)                  6.71 m / 22.0 ft
Antenna Model                             Vertex Corporation 9 Meter 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                                                                     -0.5 (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                0.00                     44.04                   -9.10           291.09                 -9.10           182.69
195                0.00                     42.77                   -8.78           293.16                 -8.78           183.91
200                0.00                     41.06                   -8.34           296.08                 -8.34           185.62
205                0.00                     38.96                   -7.77           299.89                 -7.77           187.82
210                0.00                     36.52                   -7.06           304.65                 -7.06           190.52
215                0.00                     33.79                   -6.22           310.47                 -6.22           193.76
220                0.00                     30.82                   -5.22           318.12                 -5.22           197.58
225                0.00                     27.65                   -4.04           326.54                 -4.04           202.08
230                0.00                     24.31                   -2.65           336.72                 -2.65           205.77
235                0.23                     20.69                   -0.89           346.24                 -0.89           210.07
240                0.32                     17.15                    1.14           349.44                  1.14           209.39
245                0.34                     14.44                    3.01           361.21                  3.01           215.09
250                0.27                     13.21                    3.97           378.84                  3.97           226.75
255                0.30                     13.67                    3.61           371.30                  3.61           221.63
260                0.38                     15.72                    2.09           349.52                  2.09           208.08
265                0.46                     18.88                    0.10           323.70                  0.10           194.08
270                0.47                     22.73                   -1.92           306.90                 -1.92           184.75
275                0.49                     26.95                   -3.76           291.43                 -3.76           175.02
280                0.44                     31.40                   -5.42           285.02                 -5.42           172.06
285                0.48                     35.95                   -6.89           270.98                 -6.89           160.39
290                0.47                     40.62                   -8.22           264.30                 -8.22           156.49
295                0.49                     45.33                   -9.41           254.38                 -9.41           149.73
300                0.49                     50.10                  -10.00           251.01                -10.00           147.70
305                0.47                     54.90                  -10.00           253.51                -10.00           149.81
310                0.51                     59.71                  -10.00           249.41                -10.00           146.47
315                0.43                     64.56                  -10.00           257.70                -10.00           153.40
320                0.47                     69.40                  -10.00           253.70                -10.00           149.97
325                0.49                     74.26                  -10.00           251.17                -10.00           147.84
330                0.50                     79.13                  -10.00           250.20                -10.00           147.02
335                0.53                     83.99                  -10.00           247.78                -10.00           145.11
340                0.47                     88.87                  -10.00           253.14                -10.00           149.50
345                0.53                     93.74                  -10.00           247.88                -10.00           145.19
350                0.60                     98.62                  -10.00           243.29                -10.00           141.41
355                0.60                    103.49                  -10.00           243.64                -10.00           141.69




                                            Interference Analysis Report for Bristow, Virginia


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 Bristow, Virginia


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 Bristow, Virginia


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     OH-Loss     Loss        Level         In-Band        Band
Radar Location        Lat (N)   Lon (w)   (deg.)     (mi)       miles?)     (dB)       (dB)       (dB)      (dB)    (dBW/MHz)      Interference?   Overload?
Pensacola,       FL   302128 0871626      226.4     802.0          NO      -165.9     -81.3       N/A      -247.2      -189.8            NO           NO
Pascagoula,      MS 302200 0882900        230.1     850.6          NO      -166.4     -82.3       N/A      -248.7      -191.4            NO           NO
St.Inigoes,      MD 381000 0762300        123.0      77.3         YES      -145.6     -50.5      -50.5     -196.1      -134.7           YES           NO
Table 5 Shipboard Radar B Land-Based Test and Training Sites
                                                                 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?
Moorestown,      NJ   395849 0745630      58.8        163.3       YES      -152.1     -60.8      -60.8     -212.9      -146.2           YES           NO
Wallops Island,  VA 375600 0752800       116.5        128.6       YES      -150.0     -55.0        -55     -205.0      -127.6           YES           NO
Table 6 Shipboard 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)    (dBW/MHz)      Interference?   Overload?
Bath,            ME   435425    0694848      46.2     536.5        NO      -162.4     -74.3       N/A      -236.7      -170.7            NO           NO
Bremerton,       WA   473324    1223811     300.3     2356.1       NO      -175.3    -100.0       N/A      -275.3      -209.2            NO           NO
Everett,         WA   475858    1221354     301.1     2336.6       NO      -175.2     -99.8       N/A      -275.0      -209.0            NO           NO
Mayport,         FL   302334    0812427     201.8     618.3        NO      -163.6     -76.8       N/A      -240.4      -172.7            NO           NO
Norfolk,         VA   365200    0762100     152.8     148.2       YES      -151.2     -64.6      -64.6     -215.8      -146.7           YES           NO
Pascagoula,      MS   302253    0882933     230.2     850.3        NO      -166.4     -82.3       N/A      -248.7      -175.3            NO           NO
Pearl Harbor,    HI   212000    1580000     276.1     4966.8       NO      -181.7    -112.9       N/A      -294.7      -224.1            NO           NO
Portland,        ME   434100    0701800      45.9     507.8        NO      -161.9     -73.3       N/A      -235.3      -169.2            NO           NO
San Diego        CA   324105    1170800     270.8     2263.2       NO      -174.9     -99.3      -73.3     -274.2      -200.1            NO           NO




                                                 Interference Analysis Report for Bristow, Virginia


Table 7 Naval At-Sea Operational Areas
                                                                   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
Operational Area         Lat (N)   Lon (w)    (deg.)     (mi)     miles?)      (dB)       (dB)        (dB)      (dB)     (dBW/MHz)      Interference?   Overload?
AFWTF (North
Range)
AFWTF (NR)1              183000    0670000   152.8     1537.4       NO        -171.6      -92.6        N/A      -264.1     -195.0           NO             NO
AFWTF (NR)2              200000    0670000   151.2     1442.3       NO        -171.0      -91.5        N/A      -262.5     -193.3           NO             NO
AFWTF (NR)3              221000    0654800   145.5     1343.0       NO        -170.4      -90.2        N/A      -260.6     -191.5           NO             NO
AFWTF (NR)4              221000    0652000   144.4     1357.8       NO        -170.5      -90.4        N/A      -260.9     -189.9           NO             NO
AFWTF (NR)5              185000    0620000   141.7     1667.3       NO        -172.3      -94.0        N/A      -266.2     -195.2           NO             NO
AFWTF (NR)6              185000    0620000   141.7     1667.3       NO        -172.3      -94.0        N/A      -266.2     -195.2           NO             NO
AFWTF (NR)7              182500    0643000   147.3     1612.0       NO        -172.0      -93.4        N/A      -265.4     -196.2           NO             NO
AFWTF (NR)8              183000    0644500   147.8     1599.4       NO        -171.9      -93.3        N/A      -265.2     -196.0           NO             NO
AFWTF (NR)9              183000    0663800   151.9     1546.9       NO        -171.6      -92.7        N/A      -264.3     -195.1           NO             NO
AFWTF (South Range)
AFWTF (SR)1              180500    0675500   155.3     1541.9       NO        -171.6      -92.6        N/A      -264.2     -196.4           NO             NO
AFWTF (SR)2              180500    0652700   149.7     1605.2       NO        -171.9      -93.3        N/A      -265.3     -196.1           NO             NO
AFWTF (SR)3              181500    0651000   148.9     1602.8       NO        -171.9      -93.3        N/A      -265.2     -196.1           NO             NO
AFWTF (SR)4              181500    0641000   146.8     1632.3       NO        -172.1      -93.6        N/A      -265.7     -196.5           NO             NO
AFWTF (SR)5              170000    0641000   148.2     1709.6       NO        -172.5      -94.4        N/A      -266.9     -197.7           NO             NO
AFWTF (SR)6              165800    0642800   148.8     1702.9       NO        -172.4      -94.4        N/A      -266.8     -197.6           NO             NO
AFWTF (SR)7              153300    0660600   153.5     1748.7       NO        -172.7      -94.8        N/A      -267.5     -198.3           NO             NO
AFWTF (SR)8              153900    0662300   154.1     1735.3       NO        -172.6      -94.7        N/A      -267.3     -198.1           NO             NO
AFWTF (SR)9              163000    0662300   153.3     1680.8       NO        -172.3      -94.1        N/A      -266.5     -197.3           NO             NO
AFWTF (SR)10             163000    0675500   156.7     1644.6       NO        -172.1      -93.7        N/A      -265.9     -198.1           NO             NO




                                                        Interference Analysis Report for Bristow, Virginia


Table 7 Naval At-Sea Operational Areas (continued)
                                                                                   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
Operational Area                        Lat (N)   Lon (w)    (deg.)     (mi)      miles?)     (dB)       (dB)         (dB)      (dB)     (dBW/MHz)      Interference?   Overload?
AUTEC
AUTEC1                                  252000    0780500   182.0      927.2        NO       -167.2      -83.8         N/A      -251.0     -184.2           NO             NO
AUTEC2                                  252000    0774500   180.7      926.8        NO       -167.2      -83.8         N/A      -250.9     -184.2           NO             NO
AUTEC3                                  232500    0762000   175.7      1061.2       NO       -168.3      -86.1         N/A      -254.5     -187.7           NO             NO
AUTEC4                                  232500    0771500   178.9      1058.8       NO       -168.3      -86.1         N/A      -254.4     -187.7           NO             NO
FORACS, Hawaii
FORACS, Hawaii1                         212530    1581100   276.3      4973.7       NO       -181.8      -113.0        N/A      -294.7     -224.1           NO             NO
FORACS, Hawaii2                         212100    1581500   276.3      4980.6       NO       -181.8      -113.0        N/A      -294.8     -224.2           NO             NO
FORACS, Hawaii3                         211500    1580800   276.1      4977.9       NO       -181.8      -113.0        N/A      -294.7     -224.1           NO             NO
FORACS, Hawaii4                         211500    1580700   276.1      4976.9       NO       -181.8      -113.0        N/A      -294.7     -224.1           NO             NO
Gulf of Mexico OPAREA
GoM1                                    293601    0800130   193.2      648.4        NO       -164.1      -77.6         N/A      -241.6     -174.7           NO             NO
GoM2                                    292521    0864800   221.9      834.4        NO       -166.2      -82.0         N/A      -248.2     -177.4           NO             NO
GoM3                                    284101    0864800   219.9      875.7        NO       -166.7      -82.8         N/A      -249.5     -178.7           NO             NO
GoM4                                    285231    0874400   223.4      898.8        NO       -166.9      -83.3         N/A      -250.1     -179.3           NO             NO
Pacific Missile Range Facility (PMRF)
PMRF1                                   220000    1594500   277.5      5041.8       NO       -181.9      -113.2        N/A      -295.1     -224.5           NO             NO
PMRF2                                   220800    1620000   278.6      5167.2       NO       -182.1      -113.6        N/A      -295.7     -225.1           NO             NO
PMRF3                                   224500    1614000   279.1      5123.1       NO       -182.0      -113.5        N/A      -295.5     -224.9           NO             NO
PMRF4                                   260000    1581500   281.0      4798.3       NO       -181.4      -112.3        N/A      -293.8     -223.2           NO             NO
Pearl Harbor South OPAREA
PHS1                                    190800    1591500   274.5      5129.0       NO       -182.0      -113.5        N/A      -295.5     -221.4           NO             NO
PHS2                                    210000    1580800   275.9      4987.9       NO       -181.8      -113.0        N/A      -294.8     -224.2           NO             NO
PHS3                                    210000    1573600   275.6      4956.9       NO       -181.7      -112.9        N/A      -294.6     -224.0           NO             NO
PHS4                                    191800    1562000   273.4      4952.0       NO       -181.7      -112.9        N/A      -294.6     -220.5           NO             NO
PHS5                                    184900    1574500   273.5      5054.4       NO       -181.9      -113.3        N/A      -295.1     -221.0           NO             NO




                                                                Interference Analysis Report for Bristow, Virginia


Table 7 Naval At-Sea Operational Areas (continued)
                                                                               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
Operational Area              Lat (N)    Lon (w)      (deg.)       (mi)       miles?)     (dB)       (dB)        (dB)       (dB)     (dBW/MHz)      Interference?   Overload?
Southern California (SOCAL)
SOCAL1                        385200    1255200      285.3        2605.9        NO       -176.1      -101.7          N/A    -277.9     -210.1           NO             NO
SOCAL2                        390000    1240000      284.9        2502.9        NO       -175.8      -101.0          N/A    -276.8     -206.2           NO             NO
SOCAL3                        311500    1163000      267.9        2267.9        NO       -174.9       -99.3         -72.8   -274.3     -200.2           NO             NO
SOCAL4                        300000    1203000      268.3        2526.5        NO       -175.9      -101.2          N/A    -277.1     -203.0           NO             NO
Virginia Capes OPAREA
VC1                           384500    0750000       90.2        139.0        YES       -150.7       -51.9         -51.9   -202.6     -125.2           YES            NO
VC2                           384500    0743000       89.8        166.0        YES       -152.2       -59.6         -59.6   -211.8     -134.5           YES            NO
VC3                           374500    0724000      103.4        276.2        NO        -156.6       -75.9          N/A    -232.5     -149.1           YES            NO
VC4                           350600    0724000      131.6        371.9        NO        -159.2       -87.3          N/A    -246.5     -172.9           NO             NO
VC5                           320000    0771200      177.3        468.1        NO        -161.2       -71.9          N/A    -233.1     -166.4           NO             NO
VC6                           342400    0773000      179.2        302.3        NO        -157.4       -75.6          N/A    -233.0     -166.3           NO             NO
VC7                           354000    0752500      150.4        245.7        YES       -155.6       -70.0          -70    -225.6     -156.5           NO             NO
VC8                           370000    0755000      141.8        155.5        YES       -151.7       -62.0          -62    -213.7     -142.6           YES            NO




                                                               Interference Analysis Report for Bristow, Virginia


Table 8 Land-Based Radar Test and Training Sites
                                                                    Profile
                                                                   (Is path                          Profiled     Total    Interfering
                                                                    under               Estimated      OH-        Path       Power                        Out-of
                                            Bearing    Distance      250       FSL      OH-Loss       Loss        Loss        Level         In-Band        Band
Radar Location         Lat (N)    Lon (w)    (deg.)      (mi)      miles?)     (dB)        (dB)        (dB)       (dB)    (dBW/MHz)      Interference?   Overload?
Fort Lewis       WA    470525    1223510     299.4      2354.0        NO      -175.3     -100.0        N/A       -275.2      -209.2            NO           NO
Yakima Firing    WA    464018    1202135     298.6      2244.5        NO      -174.8      -99.1        N/A       -274.0      -208.0            NO           NO
Fort Carson      CO    383810    1044750     278.1      1471.4        NO      -171.2      -91.8        N/A       -263.0      -192.4            NO           NO
Fort Rliey       KS    385813    0965139     276.8      1040.1        NO      -168.2      -85.8        N/A       -253.9      -183.3            NO           NO
Fort Shafter     HI    211800    1574900     276.0      4957.4        NO      -181.7     -112.9        N/A       -294.6      -224.0            NO           NO
Hunter AAF       GA    320100    0810800     204.3      507.9         NO      -161.9      -73.3        N/A       -235.3      -167.6            NO           NO
Fort Gillem      GA    333600    0841900     228.5      519.4         NO      -162.1      -73.7        N/A       -235.9      -162.5            NO           NO
Fort Benning     GA    322130    0845815     225.4      608.1         NO      -163.5      -76.5        N/A       -240.0      -166.6            NO           NO
Fort Stewart     GA    315145    0813655     206.7      529.0         NO      -162.3      -74.0        N/A       -236.3      -167.4            NO           NO
Fort Rucker      AL    311947    0854255     224.3      690.7         NO      -164.6      -78.7        N/A       -243.3      -172.5            NO           NO
Yuma Proving     AZ    330114    1141855     269.9      2099.0        NO      -174.3      -98.0       -72.8      -272.2      -198.1            NO           NO
Fort Hood        TX    310830    0974550     251.1      1261.1        NO      -169.8      -89.1        N/A       -259.0      -179.0            NO           NO
Fort Knox        KY    375350    0855655     264.9      459.1         NO      -161.1     -102.6      -102.6      -263.7      -185.5            NO           NO
Fort Bragg       NC    350805    0790035     198.0      263.9         NO      -156.2      -83.3        N/A       -239.5      -171.9            NO           NO
Fort Campbell    KY    363950    0872820     257.9      561.6         NO      -162.8      -75.1        N/A       -237.9      -159.8            NO           NO
Fort Polk        LA    310343    0931226     243.5      1035.0        NO      -168.1      -85.7        N/A       -253.8      -176.7            NO           NO
Fort Leonard     MO    374430    0920737     269.3      794.7         NO      -165.8      -81.1        N/A       -246.9      -172.8            NO           NO
Fort Irwin       CA    351536    1164102     275.4      2176.2        NO      -174.6      -98.6       -68.1      -273.2      -202.6            NO           NO
Fort Sill        OK    344024    0982352     262.4      1190.1        NO      -169.3      -88.1        N/A       -257.5      -179.3            NO           NO
Fort Bliss       TX    314850    1062533     261.9      1700.0        NO      -172.4      -94.3        N/A       -266.8      -203.6            NO           NO
Fort
Leavenworth      KS    392115    0945500    277.9       933.5       NO        -167.2       -83.9          N/A    -251.1     -180.5           NO             NO
Fort Drum        NY    440115    0754844     13.6       372.8       NO        -159.2       -68.0          N/A    -227.2     -161.2           NO             NO
Fort Gordon      GA    332510    0820910    216.1       449.9       NO        -160.9       -71.2          N/A    -232.1     -161.3           NO             NO
Fort McCoy       WI    440636    0904127    302.7       774.0       NO        -165.6       -80.7          N/A    -246.2     -180.2           NO             NO
Fort Dix         NJ    400025    0743713    61.0        179.2       YES       -152.9       -61.4         -61.4   -214.3     -147.6           YES            NO
Parks Reserve    CA    374254    1214218    281.9       2401.6      NO        -175.4      -100.3          N/A    -275.8     -205.2           NO             NO
Aberdeen
Proving          MD    392825    0760655    58.3         91.7       YES       -147.1       -57.0         -57     -204.1     -137.4           YES            NO
Fort Huachuca    AZ    313500    1102000    264.5       1919.4      NO        -173.5       -96.4         N/A     -269.9     -206.8           NO             NO
Fort Monmouth    NJ    401900    0740215    59.6        216.4       YES       -154.5       -70.0         -70     -224.5     -157.9           NO             NO
Picatinny
Arsenal          NJ    405600    0743400     46.2       218.1       YES       -154.6       -70.5         -70.5   -225.1     -159.1           NO             NO


                                                    Interference Analysis Report for Bristow, Virginia


 Table 8 Land-Based Radar Test and Training Sites (continued)
                                                                    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?
 Redstone
 Arsenal           AL   343630     0863610     242.8    578.2        NO       -163.1       -75.6          N/A    -238.6     -161.5           NO             NO
 White Sands       NM   322246     1062813     263.2    1686.3       NO       -172.4       -94.2          N/A    -266.5     -203.4           NO             NO
 Army Research     MD   390000     0765800      65.3     35.9        YES      -138.9       -63.9         -63.9   -202.8     -133.6           YES            NO
 Fort Hunter       CA   355756     1211404     278.6    2410.9       NO       -175.5      -100.4          N/A    -275.9     -220.3           NO             NO
 Kelly Support     PA   402357     0800925     309.8    177.3        YES      -152.8       -65.9         -65.9   -218.7     -152.7           YES            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 Bristow, Virginia


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 Bristow, Virginia. Interference assessment for Earth
Stations Operating at 3625 - 3700 MHz at the Bristow, VA site identified 12 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
       12 sites                                                  Overload?            Interference?
St.Inigoes,                 MD    381000      0762300               No                     Yes
Moorestown,                 NJ    395849      0745630               No                     Yes
Wallops Island,             VA    375600      0752800               No                     Yes
Norfolk,                    VA    365200      0762100               No                     Yes
VC 1 OPEREA                       384500      0750000               No                     Yes
VC 2 OPEREA                       384500      0743000               No                     Yes
VC 3 OPEREA                       374500      0724000               No                     Yes
VC 8 OPEREA                       370000      0755000               No                     Yes
Fort Dix                    NJ    400025      0743713               No                     Yes
Aberdeen Proving            MD    392825      0760655               No                     Yes
Army Research               MD    390000      0765800               No                     Yes
Kelly Support               PA    402357      0800925               No                     Yes




                            Interference Analysis Report for Bristow, Virginia



Document Created: 2013-08-05 10:53:11
Document Modified: 2013-08-05 10:53:11

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