K-BLUB is a radio station that appears in the episode "Sing a Song of Patrick," that broadcasts in the Bikini Bottom region and city. The name may be an allusion of popular Christian radio station "K-LOVE". It may also be related to the Bikini Bottom Radio station "KRUM" that was featured in the episode "Krab Borg," the DJ in the episode played a song called Electric Zoo for Mr. Krabs, the DJ from that radio station was voiced by Rodney Bingenhiemer, who worker for a real Los Angeles Radio Station called KROQ, Rodney was also known as, "Rodney on the Roq" SpongeBob and Patrick played a record from atop the antenna. The citizens wondered where it was coming from and eventually showed up at K-BLUB.
K-BLUB has an extremely tall antenna with satellites apparently flying lower than it. Its tower might reach the top of the ocean but doesn't go above. It's workers (along with the rest of Bikini Bottom) don't appreciate Patrick's song, which shows the station may normally play pretty decent music. When Patrick went inside the radio station one of the workers screamed, kicked him out, and locked the door.