The station signed on in September 1965 as a NET affiliate. Due to cable television, its signal is now carried in Eastern Pennsylvania, western and parts of southern New Jersey and parts of Delaware and New York states. WLVT-TV's studio and transmitter are located on Allentown's South Mountain.
WLVT also broadcasts Scholastic Scrimmage, a popular academic quiz show in which Pennsylvania high schools compete against each other.
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