Grand Trunk Western
| Ch. 1 | Road | 160.5900 | ||
| Ch. 2 | Road | 160.5300 | ||
| Ch. 3 | 160.8450 | Chicago Yard & East Michigan Disp. | ||
| Ch. 4 | MofW | 160.9500 | ||
| PBX | 160.9500 | 160.8450 | Ainsworth, IN | |
| PBX | 160.9200 | 160.2600 | Detroit, Battle Creek, Durand & Edwardsburg, MI | |
| PBX | 160.4550 | Flat Rock, MI | ||
| PBX | 161.0100 | 160.2600 | Pontiac & Saginaw, MI | |
| PBX | 160.9800 | |||
| Police | 160.4700 | Detroit Area | ||
| Police | 161.2050 | Mutual Aid | ||
| Police | 160.9050 | Special Agents | ||
| Police | 160.4400 | |||
| Police | 161.2800 | |||
| Road | 160.9200 | ex D&TS | ||
| Road | 161.2200 | ex DT&I | ||
| Yard | 160.8150 | Orion Yard | ||
| Yard | 160.7400 | |||
| Yard | 161.0400 |
