In the late 1960s, WAEB-FM separated from WAEB and went through several formats before eventually becoming a country music station with the WXKW call sign.

In September of that year, after WHXT ("Hot 99.9") in Easton switched to WODE-FM and rebranded as "Oldies 99.9", WAEB-FM's transition to "BDay" was complete.

Rich Davis (now at KDWB in the Twin Cities) joined in 1992 and did overnights before eventually moving to nights using the name "Joe Friday".

By Spring 1996, B104 was reimaged; most of the flame-throwing CHR jingles from the '80s were dropped and Sean Caldwell became the new voice of WAEB-FM after Brian James.

In late 1996, B-104 began broadcasting Open House Party with John Garabedian on Saturday nights after it was dropped by Pottsville's WAVT-FM (T-102).

In the 1990s, B104 served as Allentown's de facto Adult Contemporary station as it eliminated rap and hard rock during the day.

WAEB-FM is short-spaced to WNNK-FM Wink 104 (licensed to serve Harrisburg, Pennsylvania) as they both operate on the same channel and the distance between the stations' transmitters is 76 miles (122 km) as determined by FCC rules.

[2] The minimum distance between two Class B stations operating on the same channel according to current FCC rules is 150 miles (240 km).