WLIW-FM (88.3 FM) is a radio station licensed to Southampton, New York, and serving eastern Long Island and coastal Connecticut.

The antenna tower was raised in January 1980, and the station went on the air, still as a club and funded by student activity fees, as WPBX at 91.3 MHz on March 11, 1980.

Valerio arranged to carry Texaco's Metropolitan Opera radio broadcasts and programming began evolving toward an NPR-style format.

On July 6, 2002, the station changed its call sign to WLIU,[1] reflecting its ownership by Long Island University (LIU).

The transfer of ownership of the station from Long Island University to Peconic Public Broadcasting was completed on December 15, 2010, and the call-letters changed to WPPB to reflect this.

[11] On October 24, 2019, it was announced that WNET would acquire WPPB for nearly $1 million, making it a sister to its Long Island PBS member station WLIW.