The station was founded as WPRU in 1940 by H. Grant Theis, a Princeton University student at the time. It often is cited as the oldest commercially licensed campus radio station in the United States. In 1955, WPRU got its FM license. It signed on as WPRB, the first college station on the FM dial in the United States, after the WPRU call sign was found to be already in use by a ship. It is considered a pioneer in FM Stereo broadcasting, transmitting a stereo signal beginning in 1964. WPRB has broadcast on three different FM frequencies in its history: it first was heard on 103.9 MHz; in 1959, it moved to 103.5 MHz; and it moved to its current frequency of 103.3 MHz in 1962. During the 1960s and 70s, it joined with other Ivy League universities to form the "Ivy Network," sharing some programming and resources. It later was an affiliate of the ABC FM Network. In 1986, Spin Magazine named WPRB the best commercial college station in the country. After decades of operation under an advertising-supported business model, in 2006 WPRB switched to a listener-supported model. In 2009, WPRB went on to acquire a Princeton student magazine, the Nassau Weekly. Nassau Weekly was founded in 1979 by Princeton students including David Remnick, who later became the editor of The New Yorker. WPRB was the first commercial radio station in the United States to play Lil Nas X's "Old Town Road" when it debuted on John Weingart's long-running program "Music You Can't Hear on the Radio."
Broadcast Signal
WPRB is a full class B signal. Its service contour covers all of Central New Jersey and portions of the Philadelphia and New York City radio markets. WPRB is short-spaced to two other class B stations: WKTU103.5 KTU and WARM-FMWarm 103.3. WPRB and WKTU operate on adjacent channels and the cities they are licensed to serve are only 45 miles apart. The minimum distance between two Class B stations operating on adjacent channels according to current FCC rules is 105 miles. WPRB and WARM-FM operate on the same channel and the cities they are licensed to serve are only 112 miles apart. The minimum distance between two Class B stations operating on the same channel according to current FCC rules is 150 miles, but because WPRB dates back to the early days of FM broadcasting it is grandfathered on its current frequency and power level.