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    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AffiliatedEntityMember" xlink:to="loc_hssc_SESLatinAmericaMember" xlink:title="Definition : loc_us-gaap_AffiliatedEntityMember to loc_hssc_SESLatinAmericaMember" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_EchoStarAndHughesSatelliteSystemsCorporationMember" xlink:label="loc_hssc_EchoStarAndHughesSatelliteSystemsCorporationMember" xlink:title="EchoStarAndHughesSatelliteSystemsCorporationMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain" xlink:to="loc_hssc_EchoStarAndHughesSatelliteSystemsCorporationMember" xlink:title="Definition : loc_dei_EntityDomain to loc_hssc_EchoStarAndHughesSatelliteSystemsCorporationMember" xlink:type="arc" use="optional" order="4" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="loc_us-gaap_TypeOfArrangementAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to loc_us-gaap_TypeOfArrangementAxis" xlink:type="arc" use="optional" order="4" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_QuetzSat1LeaseAgreementMember" xlink:label="loc_hssc_QuetzSat1LeaseAgreementMember" xlink:title="QuetzSat1LeaseAgreementMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hssc_QuetzSat1LeaseAgreementMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hssc_QuetzSat1LeaseAgreementMember" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_BlockbusterIncMember" xlink:label="loc_hssc_BlockbusterIncMember" xlink:title="BlockbusterIncMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AffiliatedEntityMember" xlink:to="loc_hssc_BlockbusterIncMember" xlink:title="Definition : loc_us-gaap_AffiliatedEntityMember to loc_hssc_BlockbusterIncMember" xlink:type="arc" use="optional" order="5" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="loc_us-gaap_StatementClassOfStockAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to loc_us-gaap_StatementClassOfStockAxis" xlink:type="arc" use="optional" order="5" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum" xlink:label="loc_hssc_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum" xlink:title="RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_QuetzSat1TransponderAgreementMember" xlink:label="loc_hssc_QuetzSat1TransponderAgreementMember" xlink:title="QuetzSat1TransponderAgreementMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hssc_QuetzSat1TransponderAgreementMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hssc_QuetzSat1TransponderAgreementMember" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_HughesSystiqueCorporationMember" xlink:label="loc_hssc_HughesSystiqueCorporationMember" xlink:title="HughesSystiqueCorporationMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AffiliatedEntityMember" xlink:to="loc_hssc_HughesSystiqueCorporationMember" xlink:title="Definition : loc_us-gaap_AffiliatedEntityMember to loc_hssc_HughesSystiqueCorporationMember" xlink:type="arc" use="optional" order="6" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="loc_us-gaap_RangeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to loc_us-gaap_RangeAxis" xlink:type="arc" use="optional" order="6" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsAgreementTerm" xlink:label="loc_hssc_RelatedPartyTransactionsAgreementTerm" xlink:title="RelatedPartyTransactionsAgreementTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsAgreementTerm" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsAgreementTerm" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_TelemetryTrackingAndControlAgreementMember" xlink:label="loc_hssc_TelemetryTrackingAndControlAgreementMember" xlink:title="TelemetryTrackingAndControlAgreementMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hssc_TelemetryTrackingAndControlAgreementMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hssc_TelemetryTrackingAndControlAgreementMember" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_DishMexicoMember" xlink:label="loc_hssc_DishMexicoMember" xlink:title="DishMexicoMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AffiliatedEntityMember" xlink:to="loc_hssc_DishMexicoMember" xlink:title="Definition : loc_us-gaap_AffiliatedEntityMember to loc_hssc_DishMexicoMember" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis" xlink:title="SubsequentEventTypeAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="loc_us-gaap_SubsequentEventTypeAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to loc_us-gaap_SubsequentEventTypeAxis" xlink:type="arc" use="optional" order="7" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsAgreementTermFromCommencementOfServiceDate" xlink:label="loc_hssc_RelatedPartyTransactionsAgreementTermFromCommencementOfServiceDate" xlink:title="RelatedPartyTransactionsAgreementTermFromCommencementOfServiceDate" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsAgreementTermFromCommencementOfServiceDate" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsAgreementTermFromCommencementOfServiceDate" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_EchoStarProfessionalServicesAgreementMember" xlink:label="loc_hssc_EchoStarProfessionalServicesAgreementMember" xlink:title="EchoStarProfessionalServicesAgreementMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hssc_EchoStarProfessionalServicesAgreementMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hssc_EchoStarProfessionalServicesAgreementMember" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_DISHBroadbandMember" xlink:label="loc_hssc_DISHBroadbandMember" xlink:title="DISHBroadbandMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AffiliatedEntityMember" xlink:to="loc_hssc_DISHBroadbandMember" xlink:title="Definition : loc_us-gaap_AffiliatedEntityMember to loc_hssc_DISHBroadbandMember" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis" xlink:title="VariableRateAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="loc_us-gaap_VariableRateAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to loc_us-gaap_VariableRateAxis" xlink:type="arc" use="optional" order="8" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsAgreementRenewalOptionTerm" xlink:label="loc_hssc_RelatedPartyTransactionsAgreementRenewalOptionTerm" xlink:title="RelatedPartyTransactionsAgreementRenewalOptionTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsAgreementRenewalOptionTerm" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsAgreementRenewalOptionTerm" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RUSServiceImplementationAgreementMember" xlink:label="loc_hssc_RUSServiceImplementationAgreementMember" xlink:title="RUSServiceImplementationAgreementMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hssc_RUSServiceImplementationAgreementMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hssc_RUSServiceImplementationAgreementMember" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="arc" use="optional" order="9" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsAgreementRenewalOptionAdditionalTerm" xlink:label="loc_hssc_RelatedPartyTransactionsAgreementRenewalOptionAdditionalTerm" xlink:title="RelatedPartyTransactionsAgreementRenewalOptionAdditionalTerm" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsAgreementRenewalOptionAdditionalTerm" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsAgreementRenewalOptionAdditionalTerm" xlink:type="arc" use="optional" order="10" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_DBSDNorthAmericaAgreementMember" xlink:label="loc_hssc_DBSDNorthAmericaAgreementMember" xlink:title="DBSDNorthAmericaAgreementMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hssc_DBSDNorthAmericaAgreementMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hssc_DBSDNorthAmericaAgreementMember" xlink:type="arc" use="optional" order="10" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="loc_us-gaap_SubsegmentsAxis" xlink:title="Definition : loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable to loc_us-gaap_SubsegmentsAxis" xlink:type="arc" order="10" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsNumberOfOwnedSatellitesTransferred" xlink:label="loc_hssc_RelatedPartyTransactionsNumberOfOwnedSatellitesTransferred" xlink:title="RelatedPartyTransactionsNumberOfOwnedSatellitesTransferred" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsNumberOfOwnedSatellitesTransferred" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsNumberOfOwnedSatellitesTransferred" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_HughesBroadbandDistributionAgreementMember" xlink:label="loc_hssc_HughesBroadbandDistributionAgreementMember" xlink:title="HughesBroadbandDistributionAgreementMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hssc_HughesBroadbandDistributionAgreementMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hssc_HughesBroadbandDistributionAgreementMember" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesAssumed1" xlink:label="loc_us-gaap_LiabilitiesAssumed1" xlink:title="LiabilitiesAssumed1" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_us-gaap_LiabilitiesAssumed1" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_us-gaap_LiabilitiesAssumed1" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_TaxSharingAgreementMember" xlink:label="loc_hssc_TaxSharingAgreementMember" xlink:title="TaxSharingAgreementMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hssc_TaxSharingAgreementMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hssc_TaxSharingAgreementMember" xlink:type="arc" use="optional" order="12" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:title="ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_SatelliteCapacityLeasedToDishNetworkMember" xlink:label="loc_hssc_SatelliteCapacityLeasedToDishNetworkMember" xlink:title="SatelliteCapacityLeasedToDishNetworkMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="loc_hssc_SatelliteCapacityLeasedToDishNetworkMember" xlink:title="Definition : loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember to loc_hssc_SatelliteCapacityLeasedToDishNetworkMember" xlink:type="arc" use="optional" order="13" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsNumberOfDBSTranspondersAvailable" xlink:label="loc_hssc_RelatedPartyTransactionsNumberOfDBSTranspondersAvailable" xlink:title="RelatedPartyTransactionsNumberOfDBSTranspondersAvailable" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsNumberOfDBSTranspondersAvailable" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsNumberOfDBSTranspondersAvailable" xlink:type="arc" use="optional" order="14" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServices" xlink:label="loc_hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServices" xlink:title="RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServices" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServices" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServices" xlink:type="arc" use="optional" order="15" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServicesSublease" xlink:label="loc_hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServicesSublease" xlink:title="RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServicesSublease" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServicesSublease" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServicesSublease" xlink:type="arc" use="optional" order="16" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod" xlink:label="loc_hssc_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod" xlink:title="RelatedPartyTransactionsAgreementAutomaticRenewalPeriod" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod" xlink:type="arc" use="optional" order="17" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement" xlink:label="loc_hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement" xlink:title="RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement" xlink:type="arc" use="optional" order="18" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService" xlink:label="loc_hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService" xlink:title="RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService" xlink:type="arc" use="optional" order="19" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" xlink:label="loc_hssc_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" xlink:title="RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems" xlink:to="loc_hssc_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" xlink:title="Definition : loc_us-gaap_RelatedPartyTransactionLineItems to loc_hssc_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" xlink:type="arc" use="optional" order="20" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DueFromRelatedPartiesNoncurrent" xlink:label="loc_us-gaap_DueFromRelatedPartiesNoncurrent" xlink:title="DueFromRelatedPartiesNoncurrent" />
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    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsGrantsReceivableByRelatedParty" xlink:label="loc_hssc_RelatedPartyTransactionsGrantsReceivableByRelatedParty" xlink:title="RelatedPartyTransactionsGrantsReceivableByRelatedParty" />
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    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_EchoStarIXMember" xlink:label="loc_hssc_EchoStarIXMember" xlink:title="EchoStarIXMember" />
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    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_EchoStarXMember" xlink:label="loc_hssc_EchoStarXMember" xlink:title="EchoStarXMember" />
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="loc_hssc_EchoStarXMember" xlink:title="Definition : loc_us-gaap_PropertyPlantAndEquipmentTypeDomain to loc_hssc_EchoStarXMember" xlink:type="arc" use="optional" order="11" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" xlink:label="loc_hssc_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" xlink:title="RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" />
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    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_EchoStarXIVMember" xlink:label="loc_hssc_EchoStarXIVMember" xlink:title="EchoStarXIVMember" />
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    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="loc_hssc_EchoStarXVIMember" xlink:title="Definition : loc_us-gaap_PropertyPlantAndEquipmentTypeDomain to loc_hssc_EchoStarXVIMember" xlink:type="arc" use="optional" order="14" />
    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_AMC15Member" xlink:label="loc_hssc_AMC15Member" xlink:title="AMC15Member" />
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    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_QuetzSat1Member" xlink:label="loc_hssc_QuetzSat1Member" xlink:title="QuetzSat1Member" />
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    <link:loc xlink:type="locator" xlink:href="hssc-20140630.xsd#hssc_EUTELSAT65WestAMember" xlink:label="loc_hssc_EUTELSAT65WestAMember" xlink:title="EUTELSAT65WestAMember" />
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