47Consumer Information on Wireless PhonesThe U.S. Food and Drug Administration (FDA) haspublished a series of Questions and Answers forconsumers relating to radio frequency (RF) exposurefrom wireless phones. The FDA publication includesthe following information:What kinds of phones are the subject of thisupdate?The term wireless phone refers here to hand-heldwireless phones with built-in antennas, often called“cell,” “mobile,” or “PCS” phones. These types ofwireless phones can expose the user to measurableradio frequency energy (RF) because of the shortdistance between the phone and the user's head.These RF exposures are limited by FederalCommunications Commission safety guidelines thatwere developed with the advice of FDA and otherfederal health and safety agencies. When the phone islocated at greater distances from the user, theexposure to RF is drastically lower because a person'sRF exposure decreases rapidly with increasingdistance from the source. The so-called “cordlessphones,” which have a base unit connected to thetelephone wiring in a house, typically operate at farlower power levels, and thus produce RF exposureswell within the FCC's compliance limits.