[4] On April 1, 2003, the station entered into a ten-year programming and operational agreement with the WGBH Educational Foundation;[5] despite this, WNCK remained separately-run from WCAI, WNAN, and WZAI, the WGBH-owned and operated Cape and Islands NPR stations.

Originally, WGBH programmed WNCK as a simulcast of its primary radio service, offering a mixed-format of classical, jazz, folk, blues, Celtic music, and news.

)[6] On June 19, 2014, WNCK dropped its simulcast with WCRB to become a local NPR station for Nantucket.

The station's lineup included Morning Edition and All Things Considered, with classical music being aired the rest of the day and all weekend.

By this point, WNCK was being operated under common management with commercial station WAZK.