Grand Trunk Western
| Ch. 1 | Road & Dispatcher | 160.59 | |||
| Ch. 2 | Road & Dispatcher | 160.53 | |||
| Ch. 3 | 160.845 | Chicago Yard & East Michigan Dispatcher | |||
| Ch. 4 | MofW | 160.95 | |||
| PBX | 160.98 | ||||
| PBX | 160.95 | 160.845 | Ainsworth, IN | ||
| PBX | 160.92 | 160.26 | Detroit, Battle Creek, Durand & Edwardsburg, MI | ||
| PBX | 160.455 | Flat Rock, MI | |||
| PBX | 161.01 | 160.26 | Pontiac & Saginaw, MI | ||
| Police | 160.47 | Detroit Area | |||
| Police | 160.905 | Special Agents | |||
| Police | 160.44 | ||||
| Police (Mutual Aid) | 161.205 | ||||
| Police | 161.28 | ||||
| Road | 160.92 | Ex D&TS | |||
| Road | 161.22 | Ex DT&I | |||
| Yard | 160.74 | ||||
| Yard | 161.04 | ||||
| Yard | 160.815 | Orion Yard |
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