23
Engineering(IEEE)andtheNationalCouncil
onRadiationProtectionandMeasurement.
Theexposurelimittakesintoconsideration
thebody’sabilitytoremoveheatfromthe
tissuesthatabsorbenergyfromthewireless
phoneandissetwellbelowlevelsknown
tohaveeffects.Manufacturersofwireless
phonesmustreporttheRFexposurelevelfor
eachmodelofphonetotheFCC.TheFCC
website(http://www.fcc.gov/oet/rfsafety)gives
directionsforlocatingtheFCCidentication
numberonyourphonesoyoucanndyour
phone’sRFexposurelevelintheonlinelisting.
8. What has the FDA done to measure the
Radio Frequency energy coming from
wireless phones?
TheInstituteofElectricalandElectronic
Engineers(IEEE)isdevelopingatechnical
standardformeasuringtheRadioFrequency
(RF)energyexposurefromwirelessphones
andotherwirelesshandsetswiththe
participationandleadershipofFDAscientists
andengineers.Thestandard,“Recommended
PracticeforDeterminingtheSpatial-Peak
SpecicAbsorptionRate(SAR)intheHuman
BodyDuetoWirelessCommunications
Devices:ExperimentalTechniques”,sets
forththerstconsistenttestmethodologyfor
measuringtherateatwhichRFisdeposited
intheheadsofwirelessphoneusers.The
testmethodusesatissue-simulatingmodel
ofthehumanhead.StandardizedSARtest
methodologyisexpectedtogreatlyimprove
theconsistencyofmeasurementsmadeat
differentlaboratoriesonthesamephone.SAR
isthemeasurementoftheamountofenergy
absorbedintissue,eitherbythewholebody
orasmallpartofthebody.Itismeasured
inwatts/kg(ormilliwatts/g)ofmatter.This
measurementisusedtodeterminewhether
awirelessphonecomplieswithsafety
guidelines.
9. What steps can I take to reduce my
exposure to Radio Frequency energy
from my wireless phone?
Ifthereisariskfromtheseproducts—and
atthispointwedonotknowthatthere
is—itisprobablyverysmall.Butifyouare
concernedaboutavoidingevenpotential
risks,youcantakeafewsimplestepsto
minimizeyourexposuretoRadioFrequency
(RF)energy.Sincetimeisakeyfactorinhow
muchexposureapersonreceives,reducing
theamountoftimespentusingawireless
phonewillreduceRFexposure.Ifyoumust
conductextendedconversationsbywireless