Attachment Exhibit A

This document pretains to SES-MFS-20111115-01355 for Modification w/ Foreign Satellite (earth station) on a Satellite Earth Station filing.

IBFS_SESMFS2011111501355_926394

                                        Intelsat License LLC
                                       Hagerstown, Maryland
                                   TIW 14.2 Meter Earth Station
                                        Call Sign: KA258

     Compliance with FCC Report & Order (FCC96—377) for the 13.75 — 14.0 GHz Band
                              Analysis and Calculations

1.       Background

This Exhibit is presented to demonstrate the extent to which the Intelsat License LLC satellite
earth station, which is being re—located from Clarksburg to Hagerstown, Maryland, is in
compliance with FCC REPORT & ORDER 96—377. The potential interference from the earth
station to US Navy shipboard radiolocation operations (RADAR) and the NASA space research
activities in the 13.75 — 14.0 GHz Band is addressed in this exhibit. The parameters for the earth
station are:

                          Table 1. Earth Station Characteristics

     *   Coordinates (NAD$83):                    39° 35° 54.0" N, 77° 45° 33.0" W

     *   Satellite Location for Earth Station:     From 43.1° W to 58.0° W
                                                   INTELSAT 11
                                                   INTELSAT 1R
                                                   INTELSAT 9 and INTELSAT 16

     *   Frequency Band:                           13,75—14.0 GHz for uplink

     *   Polarizations:                            Circular and Linear

     *   Emissions:                                850KFID

     e   Modulation:                               Digital

     e   Maximum Aggregate Uplink EIRP:            87.0 dBW for all Carriers

     *   Transmit Antenna Characteristics
            Antenna Size:     —                    14.2 meters in Diameter
               Antenna Type/Model:                 TIW
               Gain:                               65.1 dBi

     *   RF power into Antenna Flange:             21.9 dBW
                                                   or —1.4 dBW/4 kHz (Maximum)


     •   Minimum Elevation Angles:
         Hagerstown, Md.                        32.0° @ 132.7° Az. (Intelsat IS-11) at 43.1° W
                                                36.0° @ 140.5° Az. (Intelsat IS-1R) at 50.0° W
                                                39.8° @ 150.6° Az. (Intelsat IS- 9) at 58.0° W
                                                39.8° @ 150.6° Az. (Intelsat IS- 16) at 58.0° W

     •   Side Lobe Antenna Gain:                32 - 25*log(θ)


Because the above uplink spectrum is shared with the Federal Government, coordination in this
band requires resolution data pertaining to potential interference between the earth station and
both Navy Department and NASA systems. Potential interference from the earth station could
impact with the Navy and/or NASA systems in two areas. These areas are noted in FCC Report
and Order 96-377 dated September 1996, and consist of (1) Radiolocation and radio navigation,
(2) Data Relay Satellites.

Summary of Coordination Issues:

1) Potential Impact to Government Radiolocation (Shipboard Radar)
2) Potential Impact to NASA Data Relay Satellite Systems (TDRSS)


2.       Potential Impact to Government Radiolocation (Shipboard Radar)

Radiolocation operations (RADAR) may occur anywhere in the 13.4 - 14 GHz frequency band
aboard ocean going United States Navy ships. The Federal Communication Commission (FCC)
order 96-377 allocates the top 250 MHz of this 600 MHz band to the Fixed Satellite Service
(FSS) on a co-primary basis with the radiolocation operations and provides for an interference
protection level of -167 dBW/m2/4 kHz.

The closest distance to the shoreline from the Hagerstown earth station is approximately 131 km
Southeast toward the Atlantic Ocean. The calculation of the power spectral density at this
distance is given by:

         1.   Clear Sky EIRP:               87.00 dBW
         2.   Carrier Bandwidth:            850 kHz
         3.   PD at antenna input:          -1.4 dBW/4 kHz
         4.   Transmit Antenna Gain:        65.1 dBi
         5.   Antenna Gain Horizon:         FCC Reference Pattern
         6.   Antenna Elevation Angles:     32.0°, 36.0°, and 39.8°

The proposed earth station will radiate interference toward the ocean according to its off-axis
side-lobe performance. A conservative analysis, using FCC standard reference pattern, results in
off-axis antenna gains of 6.7 dBi towards the Atlantic Ocean.


The signal density at the shoreline, through free space is:

PFD = Antenna Feed Power density (dBW/4 kHz) + Antenna Off-Axis Gain (dBi) – Spread Loss
(dBw-m2).
      = -1.4 dBw/4 kHz + (6.7 dBi) – 10*log[4Π*(131000m)2]
      = -108.0 dBW/m2/4 kHz + Additional Path Losses (~69.0 dB)

Our calculations show additional path loss of approximately 69.0 dB including absorption loss
and earth diffraction loss for the actual path profiles from the proposed earth station to the
nearest shoreline.

The calculated PFD including additional path losses to the closest shoreline location is –177.0
dBW/m2/4 kHz. This is 10.0 dB below the –167 dBW/m2/4 kHz interference criteria of R&O
96-377. Therefore, there should be no interference to the US Navy RADAR from the
Hagerstown earth station due to the distance and the terrain blockage between the site and the
shore.


3.     Potential Impact to NASA’s Data Relay Satellite System (TDRSS)

The geographic location of the Intelsat License LLC earth station in Hagerstown, Maryland is
outside the 390 km radius coordination contour surrounding NASA’s White Sands, New Mexico
ground station complex. Therefore, the TDRSS space-to-earth link will not be impacted by the
Intelsat License LLC earth station in Hagerstown, Maryland.

The TDRSS space-to-space link in the 13.772 to 13.778 GHz band is assumed to be protected if
an earth station produces an EIRP less than 71 dBW/6 MHz in this band. The 14.2 meter earth
station dish will have an EIRP greater than 71 dBW/6 MHz in this band. The total EIRP for all
carriers is 87.0 dBW, and the equivalent EIRP per 6 MHz segment remains at 87.0 dBW/6 MHz.
Therefore, there will be interference to the TDRSS space-to-space link (Table 1).

In order to meet the 71 dBW/6 MHz interference criteria, the earth station would have to be
limited to an RF power density 16.0 dB lower than the maximum of -1.4 dBW/4kHz or -17.4
dBW/4kHz for an EIRP of 71.0 dBW. If this operational condition cannot be met, then the
Hagerstown, Maryland earth station may not be tuned to operate at the frequencies in the 13.772
to 13.778 GHz Band.


4.   Coordination Issue Result Summary and Conclusions

The results of the analysis and calculations performed in this exhibit indicate that compatible
operation between the earth station at the Hagerstown facility and the US Navy and NASA
systems space-to-earth link are possible. These analyses have been based on the assumption of
850 kHz bandwidth carriers. Operations in NASA systems space-to-space link (13772.0 to
13778.0 MHz) will not be permitted.


                                            Table 1

            Excluded Frequency Range for Intelsat License LLC Earth Station

              System                        Frequency Restriction
              TDRSS                         13.772-13.778 GHz (see Note 1)


Note 1: In order to meet the 71 dBW/6 MHz interference criteria, the earth station would have to
be limited to a maximum total EIRP of 71.0 dBW.

No interference to US Navy RADAR operations from the Hagerstown, Maryland earth station
will occur.



Document Created: 2011-11-14 16:16:08
Document Modified: 2011-11-14 16:16:08

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