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A jazz musician named Teri Pall invented a version of the cordless phone in 1965 but could not market her invention, as its 2-mile (3.2 km) range caused its radio signals to interfere with aircraft communications. In 1968, she sold her rights to the cordless phone to a manufacturer who modified it for practical use.
7. Cordless home phones give off radiation. Just as a cell phone communicates with a tower, a cordless home phone handset emits signals to the base station in your home. Like a cell phone, the cordless phone handset emits peak levels of radiation during a call.hen a phone is on and not in use, it send outs an intermittent signal to connect with nearby cell phone towers. The phoneâs âcheck inâ communication with the tower is significantly lower than the level of radiation used for actual conversation, but it never falls to zero.