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  <xsd:element name="FutureAmortizationExpenseAfterYearFour" id="hssc_FutureAmortizationExpenseAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
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  <xsd:element name="RelatedPartyTransactionsAgreementMaximumNumberOfOneYearRenewalOptions" id="hssc_RelatedPartyTransactionsAgreementMaximumNumberOfOneYearRenewalOptions" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="RelatedPartyTransactionsAgreementTerm" id="hssc_RelatedPartyTransactionsAgreementTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionsAgreementTermFromCommencementOfServiceDate" id="hssc_RelatedPartyTransactionsAgreementTermFromCommencementOfServiceDate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" id="hssc_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum" id="hssc_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionsGrantsReceivableByRelatedParty" id="hssc_RelatedPartyTransactionsGrantsReceivableByRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="RelatedPartyTransactionsNumberOfDBSTranspondersAvailable" id="hssc_RelatedPartyTransactionsNumberOfDBSTranspondersAvailable" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="RelatedPartyTransactionsNumberOfDBSTranspondersExpectedToReceiveServicesPerAgreement" id="hssc_RelatedPartyTransactionsNumberOfDBSTranspondersExpectedToReceiveServicesPerAgreement" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServices" id="hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServices" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement" id="hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService" id="hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SESLatinAmericaMember" id="hssc_SESLatinAmericaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SatelliteServicesBusinessMember" id="hssc_SatelliteServicesBusinessMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SatelliteServicesLeasedFromDishNetworkMember" id="hssc_SatelliteServicesLeasedFromDishNetworkMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SatellitesMember" id="hssc_SatellitesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfCondensedBalanceSheetTableTextBlock1" id="hssc_ScheduleOfCondensedBalanceSheetTableTextBlock1" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfCondensedCashFlowStatementTableTextBlock1" id="hssc_ScheduleOfCondensedCashFlowStatementTableTextBlock1" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfCondensedIncomeStatementTableTextBlock1" id="hssc_ScheduleOfCondensedIncomeStatementTableTextBlock1" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfContractualObligationsTable" id="hssc_ScheduleOfContractualObligationsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfDepreciationAndAmortizationExpenseTableTextBlock" id="hssc_ScheduleOfDepreciationAndAmortizationExpenseTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable" id="hssc_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTableTextBlock" id="hssc_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsByMajorClassTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotes7.625PercentDue2021Member" id="hssc_SeniorNotes7.625PercentDue2021Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorSecuredNotes6.50PercentDue2019Member" id="hssc_SeniorSecuredNotes6.50PercentDue2019Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StrategicMarketableInvestmentSecuritiesMember" id="hssc_StrategicMarketableInvestmentSecuritiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TelemetryTrackingAndControlAgreementMember" id="hssc_TelemetryTrackingAndControlAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TelesatCanadaMember" id="hssc_TelesatCanadaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TerreStarAgreementMember" id="hssc_TerreStarAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TotalInterestObligation" id="hssc_TotalInterestObligation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="TotalNumberOfAmplifierLoss" id="hssc_TotalNumberOfAmplifierLoss" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ValueOfBid" id="hssc_ValueOfBid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
</xsd:schema>
