Lincoln Correctional Center (K-18) - radio units K-18-x (453.875 F-1/2)
Logan Correctional Center (K-13) - radio units K-13-x (453.875 F-1/2, 453.35 F-3/4)
Hanna City Camp -- units K-13-300
Used primarily for CTU (Prisoner transfer unit); prison site to site communications and base communications with vehicles for writs / escorts.
Transmitter at State Fairgrounds on north side of Springfield
Training Academy is 453.875 (F-1/2) and 453.275 (F-3/4) Office of Adult and Vocational Education (Illinois) State Department ofCorrections 1301 Concordia Court Springfield