Satellite services
Propagation of radio waves in ionized and non-ionized media and the characteristics of radio noise, for the purpose of improving radiocommunication systems.
Structure

Efficient orbit/spectrum utilization for FSS and BSS
Working Party 4A (WP 4A)

Systems, air interfaces, performance and availability objectives for FSS, BSS and MSS
Working Party 4B (WP 4B)

Efficient orbit/spectrum utilization for MSS and RDSS
Working Party 4C (WP 4C)
- Mailing Lists, Rapporteur and Correspondence Groups of SG 4, WP 4A, WP 4B and WP 4C
– How to use
Disbanded Groups
Next Meeting
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Next meeting to be announced…