Systems and networks for the mobile, radiodetermination and amateur services, including related satellite services.
| Working Party 8A (WP 8A) | Land mobile service excluding IMT-2000; amateur and amateur satellite services |
| Working Party 8B (WP 8B) | Maritime mobile service including Global Maritime Distress and Safety System (GMDSS); aeronautical mobile service and radiodetermination service |
| Working Party 8D (WP 8D) | All mobile-satellite services and the radiodetermination-satellite service |
| Working Party 8F (WP 8F) | IMT-2000 and systems beyond IMT-2000 |