The station's 24/7 non-commercial classical music format served a large listener base and was popular among music aficionados. The earliest years also included broadcasts of health information and lectures from visiting professors. Early on, part of WAMC's regular programming was the broadcast of live concerts by the Boston Symphony Orchestra from Tanglewood and Boston. When the NPR network was founded in 1970, WAMC signed on as one of NPR's original 90 "charter" members. Around 1980, financial pressures caused the hospital and medical school to divest the station. In 1981, the Federal Communications Commission (FCC) license on 90.3 FM was transferred to a 501c3 tax-exempt entity, WAMC, Inc., which had been set up by a group of five corporators (amongst them the current CEO and president, Alan S. Chartock) affiliated with the State University of New York and New York State government. In the years since the transfer, the station has cut back on most classical music programming (live BSO concerts are still broadcast) while becoming a producer of information-based, non-music programming, providing a variety of interview-format programs to radio stations across the country via the station's in-house subsidiary, National Productions. (WMHT-FM in nearby Schenectady, New York and its network of repeater stations continues to program classical music in the region.)