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Efficient orbit/spectrum utilization

Results:7 total items.

Contributions �[�Source:�WP 4-9S�]���
�	Number�	Title	Source	Date
�	[ 431 ] � �	Liaison statement to ITU-R Working Party 1B on the study of software defined radio and cognitive radio systems in Working Party 1B � �	WP 4-9S �	2007-06-29
�	[ 328 ] � �	Liaison statement to WP 4A - Sharing between non-geostationary-satellite systems in the fixed-satellite service using highly inclined orbits and stations in the fixed service in the 17.7-19.7 GHz band � �	WP 4-9S �	2006-03-22
�	[ 272 ] � (Rev.1)�	Liaison statement to WP 4A - Steps that may be taken for frequency sharing between bidirectional FSS networks comprising ubiquitously deployed earth stations � �	WP 4-9S �	2005-12-02
�	[ 270 ] � �	Liaison statement to the Working Party of the Special Committee and to Working Party 4A for information - WRC-07 Agenda item 1.12 - Footnote 5.538 � �	WP 4-9S �	2005-11-23
�	[ 128 ] � �	Liaison statement to Working Party 4A - Request for clarification on the assumptions used to derive the number of active HIO satellites operating in the 17.7-19-7 GHz frequency band � �	WP 4-9S �	2004-10-11
�	[ 22 ] � �	Liaison statement to WP 4A - Request for comments on a preliminary draft revision of Recommendation ITU-R SF.1649 � �	WP 4-9S �	2004-02-18
�	[ 21 ] � �	Liaison statement to WP 4A - Request for additional information on the characteristics of fixed-satellite service systems using highly inclined orbits in the 18 GHz band � �	WP 4-9S �	2004-02-18
Results:7 total items. �

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