4. PUBLICATIONS OF THE ITU-D SECTOR ITU-D Question 9/2 - Frequency agile systems in the MF/HF bands 2002 - Final Report, Yearly Subscription The publication relates to activities carried out in the Radiocommunication Sector in the field of frequency agile systems in the MF/HF bands. A detailed description of frequency agile systems is given in the Annex. The paper takes into account the results of WRC-2000, possible actions at future WRCs and actions completed in the ITU-R Study Groups. MEDIA PRICE CHF LANGUAGE ARTICLE ISBN PAGE NBR EFSA 92-61-09721-9 92-61-09722-7 92-61-09723-5 92-61-09726-X 21247 21248 21249 23218 16 16 16 14 14.- EFSA 14.- ITU-D Question 9/2 - High Altitude Platform Stations: an opportunity to close the information gap 2002 - Final Report, Yearly Subscription The publication provides an update on technical and regulatory developments with respect to high altitude platform stations (HAPS). MEDIA PRICE CHF LANGUAGE ARTICLE ISBN PAGE NBR EFS 92-61-09841-X 92-61-09842-8 92-61-09843-6 21364 21365 21366 16 16 16 104 14.- EFS 14.- ITU-D Question 9-1/2 - Identification of study topics in the ITU-T and ITU-R study groups which are of particular interest to developing countries Report on Question 9-1/2 Report on Question 9-1/2 MEDIA PRICE CHF LANGUAGE ARTICLE ISBN PAGE NBR EFS Free