1948 Event WJZ TV channel 13 in Baltimore, MD (ABC) begins broadcasting 1948 Event ABC enters network TV at 7 PM (WJZ, New York) 1924 Event 1st foreign language course broadcast on U.S. radio (WJZ, New York City) 1922 Event For 1st time, entire World Series broadcast over radio (WJZ and WGY) 1921 Event WJZ, Newark New Jersey begins broadcasting
