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  <xsd:element abstract="true" id="gsat_FinanceLeasesAbstract" name="FinanceLeasesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ForeignSubsidiariesMember" name="ForeignSubsidiariesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_GatewayLocationInNicaraguaMember" name="GatewayLocationInNicaraguaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_GlobalStarSystemMember" name="GlobalStarSystemMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_GrossInterestCostsCapitalized" name="GrossInterestCostsCapitalized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_GroundComponentMember" name="GroundComponentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_GroundInfrastructureAssetsMember" name="GroundInfrastructureAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_IGOMember" name="IGOMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_IncomeTaxDisclosureLineItems" name="IncomeTaxDisclosureLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_IntangibleAssetsAndOtherAssetsNoncurrent" name="IntangibleAssetsAndOtherAssetsNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="gsat_LesseeFinanceLeaseCostAbstract" name="LesseeFinanceLeaseCostAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_LesseeOperatingAndFinanceLeasesRemainingLeaseTerm" name="LesseeOperatingAndFinanceLeasesRemainingLeaseTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_LicensingandRoyaltyAgreementPaymentsReceivable" name="LicensingandRoyaltyAgreementPaymentsReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="gsat_LongTermDebtCarryingValueAbstract" name="LongTermDebtCarryingValueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_LongTermDebtPrincipalAmountAbstract" name="LongTermDebtPrincipalAmountAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_LossContingencyRetentionLimit" name="LossContingencyRetentionLimit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="gsat_MILSATLLCMember" name="MILSATLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionChangeInEstimatedImpactOfAdoption" name="NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionChangeInEstimatedImpactOfAdoption" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="gsat_NonCashInterestExpenseCashFlow" name="NonCashInterestExpenseCashFlow" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_NoncurrentRestrictedCashMember" name="NoncurrentRestrictedCashMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_NumberOfRANs" name="NumberOfRANs" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_OperatingAndFinanceLeaseLiabilityCurrent" name="OperatingAndFinanceLeaseLiabilityCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="gsat_OperatingAndFinanceLeaseLiabilityNoncurrent" name="OperatingAndFinanceLeaseLiabilityNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="gsat_OperatingLeaseCostAbstract" name="OperatingLeaseCostAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_OperatingLeaseInterestExpense" name="OperatingLeaseInterestExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="gsat_OperatingLeaseRentExpenseRateOfIncrease" name="OperatingLeaseRentExpenseRateOfIncrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_OperatingLeaseRightOfUseAssetAmortization" name="OperatingLeaseRightOfUseAssetAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="gsat_OperatingLeasesAnnualBaseRental" name="OperatingLeasesAnnualBaseRental" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="gsat_OperatingLossCarryforwardsPercentageExpiring" name="OperatingLossCarryforwardsPercentageExpiring" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_OtherAccruedExpenses" name="OtherAccruedExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="gsat_OtherAssetsPolicyPolicyTextBlock" name="OtherAssetsPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_OtherCountriesMember" name="OtherCountriesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_PercentageOfCapitalStockPledgedAsCollateral" name="PercentageOfCapitalStockPledgedAsCollateral" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="gsat_PercentageOfGuaranteeProvidedByFrenchExportCreditAgencyToLendingSyndicate" name="PercentageOfGuaranteeProvidedByFrenchExportCreditAgencyToLendingSyndicate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PerformanceBasedRestrictedStockMember" name="PerformanceBasedRestrictedStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PriorTo2026Member" name="PriorTo2026Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ProductDuplexMember" name="ProductDuplexMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ProductOtherMember" name="ProductOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ProductSPOTMember" name="ProductSPOTMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ProductSimplexMember" name="ProductSimplexMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PropertyPlantAndEquipmentAdditionalDisclosuresAxis" name="PropertyPlantAndEquipmentAdditionalDisclosuresAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PropertyPlantAndEquipmentAdditionalDisclosuresDomain" name="PropertyPlantAndEquipmentAdditionalDisclosuresDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PurchasedProductsSubscriberEquipmentDevicesMember" name="PurchasedProductsSubscriberEquipmentDevicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ReductionOfDerivativeLiabilityArisingFromSettlementOfDebt" name="ReductionOfDerivativeLiabilityArisingFromSettlementOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_RegulatoryAuthorizationsMember" name="RegulatoryAuthorizationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ReimbursementCosts" name="ReimbursementCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SatFi2Member" name="SatFi2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ScheduleOfAmortizationExpensesTableTextBlock" name="ScheduleOfAmortizationExpensesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ScheduleOfDepreciationExpenseTableTextBlockTableTextBlock" name="ScheduleOfDepreciationExpenseTableTextBlockTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ScheduleOfFairValueOfPlanAssetsTableTextBlock" name="ScheduleOfFairValueOfPlanAssetsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SecondGenerationSatelliteOnGroundSpareMember" name="SecondGenerationSatelliteOnGroundSpareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SecondGenerationSatellitesMember" name="SecondGenerationSatellitesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SecondGenerationSoftwareUpgradesMember" name="SecondGenerationSoftwareUpgradesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SecondLienTermLoanFacilityMember" name="SecondLienTermLoanFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesDuplexMember" name="ServicesDuplexMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesIGOMember" name="ServicesIGOMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesOtherMember" name="ServicesOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesSPOTMember" name="ServicesSPOTMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesSimplexMember" name="ServicesSimplexMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualIncreaseToMaximumAggregateNumberOfSharesAvailableForGrantInFutureYears" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualIncreaseToMaximumAggregateNumberOfSharesAvailableForGrantInFutureYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumAmountPerEmployee" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumAmountPerEmployee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="gsat_SharePricePercentageDecrease" name="SharePricePercentageDecrease" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SoftwareFacilitiesandEquipmentMember" name="SoftwareFacilitiesandEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SpaceComponentMember" name="SpaceComponentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_StandardProductWarrantyPeriod" name="StandardProductWarrantyPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_StockIssuanceSettlementPeriodUponConversionAndAutomaticConversion" name="StockIssuanceSettlementPeriodUponConversionAndAutomaticConversion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_StockIssuedDuringPeriodSharesWarrantsExercised" name="StockIssuedDuringPeriodSharesWarrantsExercised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_StockIssuedDuringPeriodValueIssuedforSettlement" name="StockIssuedDuringPeriodValueIssuedforSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="gsat_StockIssuedDuringPeriodValueWarrantsExercised" name="StockIssuedDuringPeriodValueWarrantsExercised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SubordinatedLoanAgreementMember" name="SubordinatedLoanAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_TerrapinMember" name="TerrapinMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ThermoCapitalPartnersLlcMember" name="ThermoCapitalPartnersLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ThermoCompanyMember" name="ThermoCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_WarrantsAssociatedWithThermoLoanAgreementMember" name="WarrantsAssociatedWithThermoLoanAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
