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Contributions��
�	Number�	Title	Source	AI/Question	Date
�	[ 55 ] � �	Draft new Question ITU-R [QUESTION ITU-R 71/6]/4 - Sharing studies between high-definition television in the broadcasting-satellite service and other services � �	WP 4A �	71/6 �	2008-10-15
�	[ 54 ] � �	Draft new Question ITU-R [QUESTION ITU-R 57/6]/4 - Frequency sharing issues related to the introduction of the broadcasting-satellite service (sound) in the frequency range 1-3 GHz � �	WP 4A �	57/6 �	2008-10-15
�	[ 53 ] � �	Draft new Question ITU-R [QUESTION ITU-R 72/6]/4 - Digital techniques in the broadcasting-satellite service (sound and television) � �	WP 4A �	72/6 �	2008-10-15
�	[ 52 ] � (Rev.1)�	Draft revision of Recommendation ITU-R S.465-5 - Reference earth-station radiation pattern for use in coordination and interference assessment in the frequency range 2 to about 30 GHz � �	WP 4A �	�	2008-10-15
�	[ 51 ] � �	Draft new Question ITU-R [QUESTION ITU-R 73-1/6]/4 - Receiving earth station antennas for the broadcasting-satellite service � �	WP 4A �	73-1/6 �	2008-10-15
�	[ 50 ] � (Rev.1)�	Draft new Recommendation ITU-R S.[CSREF-PATT] - Reference earth-station radiation pattern for antennas used with closely spaced satellites in the geostationary-satellite orbit for use in coordination and interference assessment in the frequency range from 2 to 31 GHz � �	WP 4A �	�	2008-10-15
�	[ 49 ] � (Rev.1)�	Draft new Recommendation ITU-R S.[XP-VSAT] - Cross-polarization reference gain pattern for linearly polarized very small aperture terminals (VSATs) for frequencies in the range 2 to 31 GHz � �	WP 4A �	�	2008-10-15
�	[ 48 ] � �	Draft new Question ITU-R [QUESTION ITU-R 76/6]/4 - Satellite broadcasting of high-definition television � �	WP 4A �	76/6 �	2008-10-15
�	[ 47 ] � �	Draft revision of Question ITU-R 245/4 - Out-of-band and spurious emission limits � �	WP 4A �	245/4 �	2008-10-15
�	[ 46 ] � �	Draft revision of Question ITU-R 235/4 - Use of operational facilities to meet power-flux-density limitation under Article 21 of the Radio Regulations � �	WP 4A �	235/4 �	2008-10-15
�	[ 45 ] � �	Liaison statement from Study Group 7 to Study Group 4 (and copy to SGs 1, 3, 5, 6 and for information to RAG) - Inter-working of Study Group 4 with other ITU-R Study Groups for issues involving Working Parties of more than one Study Group � �	SG 7 �	�	2008-10-14
�	[ 44 ] � �	Liaison statement from Study Group 7 to Study Group 4 (copy to Working Party 4A) - Applicability of Recommendation ITU-R S.1432 to the meteorological-satellite service in the frequency bands 18.1-18.4 GHz in Regions 1 and 3 18.0-18.3 GHz in Region 2 � �	SG 7 �	�	2008-10-14
�	[ 43 ] � �	Draft new Recommendation ITU-R M.[1088_NEW] - Characteristics and protection criteria for receiving earth stations in the redionavigation-satellite service (space-to-Earth) operating in the band 1 215-1 300 MHz � �	WP 4C �	236-2/8, 217-2/8 �	2008-10-14
�	[ 42 ] � �	Draft new Question ITU-R [DIGMSS]/4 - Performance objectives for digital mobile-satellite services � �	WP 4C �	112/8 �	2008-10-14
�	[ 41 ] � (Rev.1)�	Draft new Recommendation ITU-R M.[1317_NEW] - Description of systems and netwoks in the radionavigation-satellite service (space-to-Earth and space-to-space) and technical characteristics of transmitting space stations operating in the bands 1 164-1 215 MHz, 1 215-1 300 MHz, and 1 559-1 610 MHz � �	WP 4C �	236-2/8, 217-2/8 �	2008-10-14
�	[ 40 ] � �	Draft new Recommendation ITU-R M.[1477_NEW] - Characteristics and protection criteria for receiving earth stations in the radionavigation-satellite service (space-to-Earth) and receivers in the aeronautical radionavigation service operating in the band 1 559-1 610 MHz � �	WP 4C �	236-2/8, 217-2/8 �	2008-10-14
�	[ 39 ] � �	Draft new Recommendation ITU-R M.[1479_NEW] - Characteristics, performance requirements and protection criteria for receiving stations of the radionavigation-satellite service (space-to-space) operating in the frequency bands 1 164-1 215 MHz, 1 215-1 300 MHz and 1 559-1 610 MHz � �	WP4C �	236-2/8, 217-2/8 �	2008-10-14
�	[ 38 ] � �	Draft new Recommendation ITU-R M.[CHAR-RX3] - Characteristics and protection criteria for receiving earth stations in the radionavigation-satellite service (space-to-Earth) operating in the band 1 164-1 215 MHz � �	WP 4C �	236-2/8, 217-2/8 �	2008-10-14
�	[ 37 ] � �	Draft new Recommendation ITU-R M.[RNSS_ORG] - Guidance on ITU-R Recommendations ralated to systems and networks in the radionavigation-satellite service operating in the frequency bands 1 164-1 215 MHz, 1 215-1 300 MHz, 1 559-1 610 MHz, 5 000-5 010 MHz and 5 010-5 030 MHz � �	WP 4C �	236-2/8, 217-2/8 �	2008-10-14
�	[ 36 ] � �	Draft new Question ITU-R [MSS_AVAL]/4 - Availability of digital paths in mobile-satellite services � �	WP 4B �	85-1/8 �	2008-10-14
�	[ 35 ] � �	Draft new Question ITU-R [NGN]/4 - Performance objectives of digital links in the fixed-satellite and mobile-satellite services forming elements of the Next Generation Network � �	WP 4B �	�	2008-10-14
�	[ 34 ] � �	Implementation of Resolutions ITU-R 1-5 and 5-5 and other issues � �	Syrian Arab Republic �	�	2008-10-09
�	[ 33 ] � �	Workshop on the efficient use of spectrum/orbit resource � �	Director, BR �	�	2008-09-16
�	[ 32 ] � �	Future updating of the ITU-R Recommendations developed by the former Working Parties 8D and 8F � �	Chairmen, Study Groups 4 and 5 �	�	2008-08-28
�	[ 31 ] � �	Reply to liaison statement from Study Group 4 - Inter-Working of Study Group 4 with other ITU-R Study Groups for issues involving Working Parties of more than one Study Group � �	SG 1 �	�	2008-07-24
�	[ 30 ] � �	Liaison statement on improved geographic distribution and coordination of ITU-T Seminars and Workshops � �	TSAG �	�	2008-07-23
�	[ 29 ] � �	Liaison statement to Study Group 4 - Appointment of a rapporteur on BSS between Study Group 6 (Working Party 6B) and Study Group 4 (Working Party 4B) � �	WP 6B �	�	2008-06-23
�	[ 28 ] � +Add.1�	Summary record of Study Group 4 meeting on 17 and 18 April 2008 � �	SG 4 �	�	2008-05-16
�	[ 27 ] � �	Final List of Participants (Geneva, 17-18 April 2008) � �	Director, BR �	�	2008-04-18
�	[ 26 ] � �	Inter-working of Study Group 4 with other ITU-R Study Groups � �	Chairman, SG 4 �	�	2008-04-18
�	[ 25 ] � �	List of documents issued � �	BR Study Group Department �	�	2008-04-16
�	[ 24 ] � �	Executive Report of the twenty third and twenty fourth meetings of Working Party 4B � �	Interim Chairman, WP 4B �	�	2008-04-16
�	[ 23 ] � �	Executive report of the first meeting of Working Party 4C � �	Interim Chairman, WP 4C �	�	2008-04-16
�	[ 22 ] � �	Executive Report of Working Party 4A activities since September 2006 � �	Interim Chairman, WP 4A �	�	2008-04-16
�	[ 21 ] � �	Applicability of Recommendation ITU-R S.1432 to the meteorological satellite service in the frequency bands 18.1-18.4 GHz in Regions 1 and 3 and 18.0-18.3 GHz in Region 2 � �	Chairman, SG 7 �	�	2008-04-16
�	[ 20 ] � �	Proposed liaison statement to relevant Working Parties of Study Group 5 - Methodology for determining whether a transmit IMT station meets the PFD limit in provisions of the radio regulations � �	WP 4A �	�	2008-04-16
�	[ 19 ] � �	Draft new Question ITU-R [HYBRID]/4 - System architecture and performance aspects on [hybrid] satellite and terrestrial systems � �	WP 4B �	�	2008-04-15
�	[ 18 ] � �	Draft new Question ITU-R [INTGR]/4 - System architecture, performance and service attributes relating to integrated mobile-satellite and ground component systems operating within the mobile-satellite service, including systems intended for Next Generation Networks � �	WP 4B �	�	2008-04-15
�	[ 17 ] � �	Liaison statement to Study Group 4 - Proposed scopes for Recommendations under the joint responsibility of Study Groups 4 and 5 � �	SG 5 �	�	2008-04-15
�	[ 16 ] � (Rev.1)�	Draft new Recommendation ITU-R S.[Availability] - Availability objectives for hypothetical reference digital paths in the fixed-satellite service operating below 15 GHz � �	WP 4B �	�	2008-04-15
�	[ 15 ] � �	Draft new Question ITU-R [GSO]/4 - Technical methods for improving the shared use of the geostationary-satellite orbit � �	WP 4A �	�	2008-04-15
�	[ 14 ] � �	Proposed suppression of 3 Study Group 4 Questions � �	Interim Chairman, WP 4A �	�	2008-04-15
�	[ 13 ] � �	Assignments of Questions to the Working Parties of Radiocommunication Study Group 4 � �	France �	�	2008-04-04
�	[ 12 ] � �	Candidacy for the chairmanship of Working Party 4C � �	France �	�	2008-04-02
�	[ 11 ] � �	Spectrum sharing and interference management in bands allocated to the broadcasting-satellite service (BSS) � �	North American Broadcasters Association �	�	2008-03-31
�	[ 10 ] � �	Future updating of the ITU-R Recommendations developed by the former Working Parties 8D and 8F � �	Chairmen, SGs 4 and 5 �	�	2008-03-20
�	[ 9 ] � �	Organization of the Working Parties of Radiocommunication Study Group 4 - Satellite services � �	France �	�	2008-03-19
�	[ 8 ] � (Rev.1)�	Provisional attribution of the Study Group 4 texts to the Working Parties � �	Chairman, SG 4 �	�	2008-03-17
�	[ 7 ] � (Rev.1)�	WRC-07 Resolutions and Recommendations related to the work of Study Group 4 � �	Chairman, SG 4 �	�	2008-03-14
�	[ 6 ] � �	Liaison statement to Study Group 4 and the Special Committee on Regulatory and Procedural Matters on Resolution 80 (Rev.WRC-07) � �	Director, Radiocommunication Bureau �	�	2008-03-14
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