elementary school students. KBPS was transferred from the school to the School District in the fall of 1939. As of 1942, KBPS was on the air every school day from 11:00 a.m. to 1:00 p.m. and from 3:15 to 5:00 p.m. Several of the city schools had radio production instruction, and would prepare special broadcasts for the station. In March 1941, with the implementation of the North American Regional Broadcasting Agreement, most of the stations on 1420 kHz, including KBPS, moved as a group to 1450 kHz. In 1929, KBPS had begun timesharing with another Portland station, KXL. After KXL moved to 750 kHz in October 1941, KBPS had unlimited broadcasting hours, but because it did not have enough programming to fill the available time, it was licensed with a reduced schedule as a "specified hours" station. As of 1947, the station was broadcasting six hours each day. Patricia Green Swenson took over as general manager at this point, a post which she held until 1994. By 1954, the station's schedule was 9 a.m. to 9 p.m. Monday to Friday, which was sometimes extended for late running sports events. Beginning in 1994, a student group at Portland State University began leasing time on the station, in order to provide college radio-style programming over KBPS for 59 hours each week, from 5 p.m. until midnight on weekdays and noon to midnight on weekends. This programming used the self-assigned identification of "KPSU radio". The contract arrangement was terminated on June 25, 2010, a week before its intended conclusion, due to KBPS management concerns that some of the programming was inappropriate for a high school station. On July 1, 2012 KBPS suspended operations for the summer due to budget cuts, but returned to the air later that year. References External links FCC History Cards for KBPS (covering 1927-1980 as KFIF / KBPS) KBPS station history (pps.net) "Digging in to the Early History of High School Radio Station KBPS" by Jennifer Waits, June 9, 2015 (radiosurvivor.com) "My Visit to the Oldest High School Radio Station in the U.S.: Portland's KBPS" by Jennifer Waits, January 19, 2016 (radiosurvivor.com) January 2022 KBPS aircheck Further reading "Benson Polytechnic School", Education's Own Stations, S. E. Frost, Jr., 1937, pages 32-33. "Radio in the Public Schools of Portland, Oregon: The Historical Development of Educational Broadcasting in the Public Schools of Portland, Oregon, and of the Schools' Radio Station, KBPS"