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  <xsd:element name="LeaseeOperatingLeasesRentExpense" id="sga_LeaseeOperatingLeasesRentExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationRelatedToExecutiveCompensation" id="sga_EffectiveIncomeTaxRateReconciliationRelatedToExecutiveCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="CommonClassAndCommonClassBMember" id="sga_CommonClassAndCommonClassBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="W288dqMember" id="sga_W288dqMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TowerInDesMoinesIowaMember" id="sga_TowerInDesMoinesIowaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TowerSitesInBellinghamWashingtonMember" id="sga_TowerSitesInBellinghamWashingtonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncreaseInOperatingLeaseAssets" id="sga_IncreaseInOperatingLeaseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="TopFiveMarketsMember" id="sga_TopFiveMarketsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WizzAmMember" id="sga_WizzAmMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
</xsd:schema>
