The station operates on the assigned FM frequency of 89.7 MHz with an effective radiated power of 13,500 watts.

The tower and transmitter facilities are located in West Terre Haute, Indiana.

[2] The original program schedule of student created live broadcasts is well documented in the annual reports written by Dr. Clarence M. Morgan, the Director of Radio Activities at Indiana State College, from 1934 to 1969, when he retired.

[3] In 2014, WISU began carrying NPR and local programming in collaboration with WFYI in Indianapolis.

[4] Previously, Terre Haute had received NPR programming from WILL (AM) in Urbana, Illinois and a translator of WFIU in Bloomington, Indiana.