Attachment Exh. 2 - Tech Info

This document pretains to SES-STA-20110412-00444 for Special Temporal Authority on a Satellite Earth Station filing.

IBFS_SESSTA2011041200444_881893

                                Special Temporary Authority Request

                    Exhibit 2: Summary of IOT Earth Station Technical Information


Date submitted:       April 12, 2011

Applicant:            GUSA Licensee LLC

File Nos.:            SES-MFS-20091221-01601

Call Sign:            E030266


Purpose of STA:

GUSA Licensee LLC (“GUSA”) is seeking Special Temporary Authority to operate the IOT (“In-Orbit
Test”) antenna located at Clifton, TX to perform the transponder testing of the launched satellites to
affirm the post-launch health to verify the performance characteristics of the individual Globalstar
satellites.

In addition, GUSA is requesting authority to operate at a power higher than that specified in 47 C.F.R §
2.106, footnote 5.364 to support the transponder testing of the launched satellites. One of the primary
tests to be performed for the health of the satellites is the determination and verification of spacecraft
antenna patterns. Uplink, or spacecraft 1.6 GHz receive, antenna verification requires the use of an
unmodulated carrier (CW) at an EIRP greater than that transmitted from a Globalstar handset
transceiver. This increased EIRP is required in order to create sufficient dynamic range to provide the
ability to measure peak-to-null antenna pattern variations of 30 dB. The performance of these In-Orbit-
Tests will be crucial to the successful deployment of the replacement Globalstar spacecraft that are
planned for the near future. The attached link budget in the Table 1 indicates the C/N expected with an
EIRP of 19 dBW. As shown in the link budget, even with the level of 19 dBW, worst case C/N falls
below the required dynamic range for the pattern measurements. This transmit level will be operated for
short periods only during testing of the satellites at a fixed ground location at Clifton, TX.

Downlink, or spacecraft 2.4 GHz transmit, antenna verification requires the use of a high gain antenna
which is accommodated by the receive function of the subject antenna.

STA term:                     60 days (beginning April 18, 2011)

Site Location:                Clifton, Texas

Latitude:                     31 ° 48 ' 2.1 " N

Longitude:                    97 ° 36 ' 46.0 " W

Transmit frequency:           1610 – 1618.725 MHz


GUSA Licensee LLC – 60-day Request for STA – April 12, 2011 (Clifton, TX - IOT)
Page 2 of 3
Receive frequency:            2483.5-2500 MHz

Polarization:                 LHCP

Antenna Size:                 1.2 m
      Gain:                   Tx: 23.4 dBi at 1.620 GHz
                              Rx: 26.7 dBi at 2.490 GHz

Maximum antenna height:       5 meters above ground level

Necessary Bandwidth:          Transmit bandwidth is 8.725 MHz
                              Receive bandwidth is 16.5 MHz
                              Maximum carrier bandwidth is 50 kHz

Carrier:                      See table below

Frequency Band T/R Mode &          Emission          Maximum       Maximum            Modulation
(MHz)          Polarization        Designator        EIRP          EIRP Density
                                                     (dBW)         (dBW/4kHz)
1610-1618.725        Tx – LHCP          N0N              19             19            Unmodulated CW for testing

 2483.5-2500         Rx – RHCP          N0N                                           Unmodulated CW for testing




Satellite:                    HIBLEO-X GLOBALSTAR 2.0 (French-licensed Globalstar Big-
                              LEO MSS system)
Orbital Location:             NGSO (1414 km altitude, 52 degree inclination)
Elevation Angle (E/W):        5 degrees to 90 degrees
Azimuth (E/W):                0 degrees to 360 degrees

Satellite:                    S2115 (U.S.-licensed Globalstar Big LEO MSS system)
Orbital Location:             NGSO (1414 km altitude, 52 degree inclination)
Elevation Angle (E/W):        5 degrees to 90 degrees
Azimuth (E/W):                0 degrees to 360 degrees

FAA notification is not required as the antenna structure does not exceed Part 17 notice criteria.


GUSA Licensee LLC — 60—day Request for STA — April 12, 2011 (Clifon, TX — TOT)
Page 3 03
                                   "Table f Link Budget forthe IOT Antemna
                                 116 Gitz up?? Gitz down
                _
                Tplink Analysis Un
                 Frequency                                       is          one
                 EIRP per user                                  190          cow
                 Altude                                        n             km
                 Usereleration angle                              s          deo
                 Stant Range                                   soss          m
                 Pathloss                                     1sa5           «o
                 Polarztion & Tracking loss                      a           «o
                 C Rx Sigral Stenghh                          1505           «o
                 Satelite antonna gain                         t2so          asi
                 Linelss                                       200           «o
                 Usersignal attransponder                     «se            cow
                 System noise temperature                     sns o          k
                 Termal noise densty, No                      20e            cowhie
                 10T measurement bandvicth                      se           coite
                 Uplnk C(\)                                     2re          «o
                 Norminal ransponder gain                      s2ra          «o
                 Downlink Analysi
                 Frequency                                      ss0          one
                 TX pover per use                               a4           cow
                 Trensmit nc lss                                22           «o
                 Satelite antonna gain                          «0o          c
                 EIRP peruser                                   s5           cow
                 GW elertion angle                                s          deo
                 Range                                         soss          km
                 Free space loss (6 deg GW eloy)              «s13           «o
                 Polarzstion & tracking loss                    a1           «o
                 Ponting loss                                   10           «o
                 RX signaliuser‘satelite                      «1800          cow
                 GW antenna gai(inct. nc losses)                «95          c
                 RX signalat antenna outputhier‘satelite      1394           cow
                 System noise temperature                      i7            k
                 Tremmal naise densty, No                     2075           dowhte
                 Downink C/N)                                  aa            «o
                 Overll(uptdoun) G(N)                          25            «o
                 Requred Measurement Dynamic Range             200           «o
                 Worstcase Measurement C                        32



Document Created: 2011-04-12 15:11:36
Document Modified: 2011-04-12 15:11:36

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