Attachment Exhibit A SES-LIC-20141124-00872

Attachment Exhibit A

This document pretains to SES-LIC-20141124-00872 for License on a Satellite Earth Station filing.

IBFS_SESLIC2014112400872_1069831

Exhibit A
Intelsat License LLC
Hagerstown, Maryland
Vertex/RSI 13.1 Meter Earth Station
Site Designator K77

Compliance with FCC Report & Order (FCC 96-377) 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 (“Intelsat”)
satellite earth station in Hagerstown, Maryland is in compliance with Federal Communications
Commission (“FCC”) Report and Order 96-377. The potential interference from the earth station
to U.S. Navy shipboard radiolocation operations (“RADAR”) and the National Aeronautics and
Space Administration (“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 (NAD83): 39 35’ 53.41” N, 77 45’ 21.5” W

 Satellite Location for Earth Station: IS-29e 50.0 W

 Frequency Band: 13.75-14.5 GHz for uplink

 Polarizations: Linear

 Emissions: 62M5G7W, 36MG7W, 1MG7W

 Modulation: Digital

 Maximum Aggregate Uplink EIRP: 88.0 dBW for all Carriers

 Transmit Antenna Characteristics
Antenna Size: 13.1 meter Diameter
Antenna Type/Model: ST 13.1
Gain: 62.7 dBi

 RF power into Antenna Flange: 25.3 dBW (Maximum)

 Minimum Elevation Angle:
Hagerstown, Md. 35.5 @ 139.2 Az.

$ Side Lobe Antenna Gain: -6.2 dBi 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 stations 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 U.S. Navy ships. 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 131km Southeast toward the Atlantic Ocean. The calculation of the power spectral density at this distance is given by: 1 MHz 36 MHz 62.5 MHz 1. Clear Sky EIRP: 85.0 85.0 85.0 dBW/4kHz 2. Carrier Bandwidth 1 MHz 36 MHz 62.5 MHz MHz 3. PD at antenna input: -1.68 -17.24 -19.64 dBW/4kHz 4. Transmit Antenna Gain: 62.7 dBi 5. Antenna Gain Horizon: FCC Reference Pattern 6. Antenna Elevation Angles: 35.5ᵒ -36.6ᵒ The earth station will radiate interference toward the Chesapeake Bay according to its off-axis side-lobe performance. A conservative analysis, using the FCC standard reference pattern, results in off-axis antenna gains of -6.2 dBi towards the Chesapeake Bay. Our calculations indicate, in addition to clear path loss, there is an additional path loss of approximately 69.0 dB including absorption loss and earth diffraction loss for the actual path profiles from the earth station to the nearest shoreline. The signal density at the shoreline is:$

not be allowed in, or to overlap the 13.77 to 13.778 GHz band with aggregate power of, or
exceeding 71 dBW/6 MHz.

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, Maryland facility and
the US Navy Shipboard RADAR systems are achieved with all carrier types.
 The NASA space-to-earth link will not be impacted by any of the emissions.
 The NASA space-to-space link would be impacted by all transmissions, and
consequently these transmissions will not be used with an aggregate power of, or
exceeding 71 dBW/6 MHz within the 13.77 to 13.78 GHz band.

Document Created: 2014-11-20 10:35:19
Document Modified: 2014-11-20 10:35:19