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Safety
Commission(FCC)guidelinesthatlimitRadioFrequency(RF)energyexposures.The
FCCestablishedtheseguidelinesinconsultationwiththeFDAandtheotherfederal
healthandsafetyagencies.TheFCClimitforRFexposurefromwirelessphonesis
setataSpecificAbsorptionRate(SAR)of1.6wattsperkilogram(1.6W/kg).TheFCC
limitisconsistentwiththesafetystandardsdevelopedbytheInstituteofElectricaland
ElectronicEngineering(IEEE)andtheNationalCouncilonRadiationProtectionand
Measurement.Theexposurelimittakesintoconsiderationthebody’sabilitytoremove
heatfromthetissuesthatabsorbenergyfromthewirelessphoneandissetwellbelow
levelsknowntohaveeffects.ManufacturersofwirelessphonesmustreporttheRF
exposurelevelforeachmodelofphonetotheFCC.TheFCCwebsite(http://www.fcc.
gov/oet/rfsafety)givesdirectionsforlocatingtheFCCidentificationnumberonyour
phonesoyoucanfindyourphone’sRFexposurelevelintheonlinelisting.
8. What has the FDA done to measure the Radio Frequency energy coming from
wireless phones?
TheInstituteofElectricalandElectronicEngineers(IEEE)isdevelopingatechnical
standardformeasuringtheRadioFrequency(RF)energyexposurefromwireless
phonesandotherwirelesshandsetswiththeparticipationandleadershipofFDA
scientistsandengineers.Thestandard,“RecommendedPracticeforDetermining
theSpatial-PeakSpecificAbsorptionRate(SAR)intheHumanBodyDuetoWireless
CommunicationsDevices:ExperimentalTechniques”,setsforththefirstconsistenttest
methodologyformeasuringtherateatwhichRFisdepositedintheheadsofwireless
phoneusers.Thetestmethodusesatissue-simulatingmodelofthehumanhead.
StandardizedSARtestmethodologyisexpectedtogreatlyimprovetheconsistency
ofmeasurementsmadeatdifferentlaboratoriesonthesamephone.SARisthe
measurementoftheamountofenergyabsorbedintissue,eitherbythewholebody
orasmallpartofthebody.Itismeasuredinwatts/kg(ormilliwatts/g)ofmatter.This
measurementisusedtodeterminewhetherawirelessphonecomplieswithsafety
guidelines.