INTERNATIONAL TELECOMMUNICATION UNION
	
	Geneva,  20th October 1997	
	No  231-7	

Propagation at frequencies above the basic MUF Report ITU-R P.2011 		
		
Recommendation ITU-R P.373 defines the basic MUF as "the highest frequency by which a radio wave can propagate between given terminals, on a specified occasion, by ionospheric refraction alone". The Recommendation also recognizes that this does not necessarily define the maximum transmission frequency for those circumstances, since a definition is also given for the operational MUF.
With this background, the Report describes the various mechanisms which may contribute to propagation above the basic MUF and provides information on the production of signal interaction at such frequencies.

Date of publication:	August 1997			
Language:	English, French and Spanish	
Pages:	12	
Format:	A4, 21 x 29,7 cm	
Article number:	English	: 10833
French	: 10834
Spanish	: 10835		
ISBN number:	English : 	92-61-06561-9
French : 	92-61-06562-7
Spanish :	92-61-06563-5			
Price in Swiss Francs:

	Catalogue price			12.–
Member States and Sector Members:  10.–         Least developed countries:  7.–	

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No  231-7  
Propagation at frequencies above the basic MUF 
Report ITU-R P.2011 

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Copyright  1997  by the International Telecommunication Union (ITU)
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