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Ionospheric propagation and radio noise

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Contributions
	Number	Title	Source	AI/Question	Date
	[ 48 ]	WHF/UHF outdoor radio noise measurement data	Germany (Federal Republic of)	214-3/3	2009-05-27
	[ 47 ]	Draft revision of Recommendation ITU-R P.531-9 - Ionospheric propagation data and prediction methods required for the design of satellite services and systems	European Space Agency (ESA) , France , Slovenia (Republic of)	218/3	2009-05-27
	[ 46 ]	Revision to Recommendation ITU-R P.684-4 - LF field strength prediction in longer propagation distances than 4 000 km	Japan		2009-05-24
	[ 45 ]	The effect of solar activity on MF sky-wave propagation	United States of America	225-5/3	2009-05-22
	[ 44 ]	Liaison statement to Working Party 3L - Application of GRWAVE to HF oceanographic radar systems with directional antenna	WP 5B	240/5	2009-05-25
	[ 43 ]	Recommendation ITU-R P.372 - Radio noise	United Kingdom of Great Britain and Northern Ireland		2009-05-19
	[ 42 ]	Radio noise data	Germany (Federal Republic of)	214/3	2009-05-19
	[ 41 ]	Draft proposed changes to Document 3L/10	Russian Federation		2009-05-21
	[ 40 ]	Contribution to Question ITU-R 214-3/3 - Databank of noise measurements	United Kingdom of Great Britain and Northern Ireland	214-3/3	2009-05-19
	[ 39 ]	Recommendation ITU-R P.533-9 - Correction of error in section 3.6 "Within the month probability of ionospheric propagation support"	United Kingdom of Great Britain and Northern Ireland		2009-05-19
	[ 38 ]	Proposed revision to Recommendation ITU-R P.534-4: method for calculating Sporadic-E field strength - Addition of method for basic transmission loss not exceeded for given percentage of an average year	United Kingdom of Great Britain and Northern Ireland		2009-04-07
	[ 37 ]	Proposed revision to Recommendation ITU-R P.534-4: Method for predicting annual statistics of interference by Sporadic-E	United Kingdom of Great Britain and Northern Ireland		2009-04-07
	[ 36 ]	Liaison statement to Radiocommunication Study Groups and Working Parties	Chairman, CCV		2009-03-20
	[ 35 ]	Liaison statement - Question regarding aggregation of interference caused by skywave propagation	WP 1A	221-1/1	2009-03-17
	[ 34 ]	Liaison statement to Working Party 5C (copy to Working Parties 3L and 7A for information) - Considerations relating to sharing and compatibility studies in support of WRC-11 Agenda item 1.16 (Resolution 671 (WRC-07))	WP 7C		2009-02-27
	[ 33 ]	Liaison statement to Working Party 5B (copy to Working Parties 3L and 7A for information) - Considerations relating to sharing and compatibility studies in support of WRC-11 Agenda Item 1.16 (Resolution 671 (WRC-07))	WP 7C		2009-02-27
	[ 32 ]	Liaison statement to WPs 3L, 5B and 5C - Arrival time difference lightning detection systems in the meteorological aids service in operation below 20 kHz (WRC-11 Agenda item 1.16)	WP 7C		2008-10-22
	[ 31 ]	Preliminary WMO position on WRC-11 agenda	WMO		2008-09-12
	[ 30 ]	Reply to liaison statement from Working Party 3L (copy to WP 1C for information) - Impact of power line Telecommunications systems on Radiocommunication systems operating in the HF band	WP 1A	221-1/1	2008-07-24
	[ 29 ]	Liaison statement to Working Parties 5A, 5B, 5C, 6A and 6B (copy to Working Party 3L for information) - Radio noise en the HF frequency band	WP 1C	214-3/3	2008-07-09
	[ 28 ]	Reply to liaison statement from Working Party 3L (copy to Working Party 1A for information) - Impact of power line telecommunications systems on radiocommunication systems operating in the HF band	WP 1C		2008-07-08
	[ 27 ]	Liaison statement to Working Party 3L - Ionospheric data and methods for Recommendation ITU-R P.1812	WP 3K		2008-06-25
	[ 26 ] +Ann.1-10	Report of the meeting of Working Party 3L, Boulder, USA 5-9 June 2008	Chairman, WP 3L		2008-06-25
	[ 25 ]	Final List of Participants - Working Party 3L (5-9 June 2008)	Director, BR		2008-06-25
	[ 24 ]	Liaison statement to ITU-R Working Party 5B on a primary allocation to the radiolocation service in the portion of the band 30-300 MHz (copy for information to ITU-R Working Parties 3L, 5A, 5C, 7B and 7D) (WRC-11 Agenda item 1.14)	WP 6A		2008-06-20
	[ 23 ]	Liaison reply to Working Party 4C (copied to Working Parties 3J, 3K, 3L, 3M, 7A, 7B, 7C, 7D, 4A, 4B, 6A, 6B, 6C, 1A, 1B, 1C, 5A, 5B, 5C and 5D for information) - Studies related to WRC-11 Agenda item 1.25	WP 6A		2008-06-11
	[ 22 ]	List of documents issued	BR Study Group Department		2008-05-29
	[ 21 ]	Revision to Recommendation ITU-R P.684-4 - LF field strength prediction in longer propagation distances than 4 000 km	Japan		2008-05-29
	[ 20 ]	Radio noise databank	Germany (Federal Republic of)	214/3	2008-05-28
	[ 19 ]	Working paper towards a preliminary draft new report - Measurement and evaluation methods for radio noise in the HF frquency band	Germany (Federal Republic of)	214-3/3	2008-05-28
	[ 18 ]	Proposed reply to liaison statement from WP 5B in doc. 3J/5; 3K/3 and 3L/3 - Considerations relating to propogation models for studies in support of WRC-11 Agenda Item 1.15	United Kingdom of Great Britain and Northern Ireland		2008-05-28
	[ 17 ]	A description of the Bullington diffraction method applied over a range of time percentages & the subsequent comparison between Recommendation ITU-R P.1812 and a modified vesion containing the new method	United Kingdom of Great Britain and Northern Ireland		2008-05-28
	[ 16 ]	Discussion paper concerning Recommendation ITU-R P.1812 - The ducting model at low frequencies	United Kingdom of Great Britain and Northern Ireland		2008-05-28
	[ 15 ]	Recommendation ITU-R P.1147 - Prediction of Sky-Wave field strength at frequencies between about 150 and 1700 KHz - Sea gain	United Kingdom of Great Britain and Northern Ireland		2008-05-28
	[ 14 ]	Draft revision of Recommendation ITU-R P.533-9 - Method for the prediction of the performance of HF circuits	United Kingdom of Great Britain and Northern Ireland		2008-05-28
	[ 13 ]	PLC non intentional radiated RF level on HF bands	Brazil (Federative Republic of)	230/3	2008-05-27
	[ 12 ]	Experiments on voice and data HF transmission	Brazil (Federative Republic of)	229/3	2008-05-27
	[ 11 ]	Contribution towards the revision of Recommendations ITU-R P.533-9 and ITU-R P.1239 - The development of maps of ionospheric characteristics	United States of America		2008-05-16
	[ 10 ]	Durations of signal fades and threshold excesses int the LF-MF ionosphere channels	Russian Federation		2008-05-15
	[ 9 ]	Document regarding Recommendation ITU-R P.533-9 - Procedures for the prediction of the performance of HF circuits*	Germany (Federal Republic of)	212/3	2008-05-13
	[ 8 ]	Proposed amendment to Recommendation ITU-R P.1239-1	Germany (Federal Republic of)	212/3	2008-05-13
	[ 7 ]	Proposed revision of Recommendation ITU-R P.1239-1	Germany (Federal Republic of)	212/3	2008-05-13
	[ 6 ]	Liaison statement to Working Parties 7A, 7B, 7C, 7D, 4A, 4B, 6D, 6X, 6G, 1A, 1B, 1C, 5A, 5B, 5C and 5D (copy for information to Working Parties 3J, 3K, 3L and 3M) - Information for studies related to WRC-11 Agenda item 1.25	WP 4C		2008-04-22
	[ 5 ]	Liaison statement to Working Parties 3J and 3L - Considerations relating to propagation models for studies in support of WRC-11 Agenda item 1.16 (Resolution 671 [COM6/16] (WRC-07))	WP 7C		2008-04-07
	[ 4 ] (Rev.1)	Structure of Study Group 3 and its Working Parties	Chairman, SG 3		2008-03-31
	[ 3 ]	Liaison statement to Working Parties 3J, 3K, 3L - Considerations relating to propagation models for studies in support of WRC-11 Agenda item 1.15	WP 5B		2008-02-20
	[ 2 ]	Liaison statement to WP 5B (Copy for information to WP 3L) - WRC-11 Agenda item 1.15	WP 5C		2008-02-08
	[ 1 ]	Documents to be carried over from the 2003-2007 Study period	WP 3L		2007-11-19
Results:98 total items. Result page: Previous - 1 - 2

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