ITU member countries will approve new and revised recommendations...

on the recommendations from the study group on terrestrial services, the letter said. One proposed new recommendation provides technical and operational characteristics of oceanographic radar systems operating in the frequency range 3 to 50 MHz, it said. The recommendation also provides information needed for work under a World Radiocommunication Conference 2012 agenda item that will consider new allocations for the radars between 3 and 50 MHz, a document said. Proposed revisions were made to another recommendation on the characteristics and protection criteria for radars operating in the radiolocation service in the frequency band 30 to 300 MHz, the letter said. The revisions were made as a consequence of work on a WRC-12 agenda item that will consider the requirements for new applications in the service and review allocations or regulatory provisions for implementing new applications in a new primary allocation of less than 2 MHz somewhere between 30 to 300 MHz. Proposed revisions to another terrestrial recommendation update radio interface standards for broadband wireless access systems in the mobile service and operating below 6 GHz. Updates cover certain CDMA and WiMAX-variant standards in International Mobile Telecommunications. Information was added on IEEE’s 802.20, Mobile Broadband Wireless Access, and Synchronous Code Division Multiple Access (SCDMA). Minor proposed changes were made on the impact of certain uplink high- altitude platform station transmissions on the passive Earth exploration satellite service in the 31.3-31.8 GHz band. Another proposed revision calls for harmonization of channel spacing in the 11 GHz band. Revisions were also proposed on the technical characteristics for an automatic identification system using time division multiple access in the VHF marine mobile band. Changes were proposed on the characteristics of HF radio equipment for the exchange of digital data and electronic mail in the maritime mobile service. The terrestrial services study group also wants to remove from active use five recommendations dealing with frequency sharing and coordination among fixed-satellite and fixed- service systems; mobile, radio-determination, amateur and related satellite services; and the fixed service. ITU member countries also will approve one new and one revised recommendation on spectrum management unless objections arise by April 20. The new recommendation describes ways to measure DVB-T coverage and verify planning criteria. A proposed revised method for measuring radio noise describes how to measure and evaluate all components of radio noise including impulsive noise. Countries will also approve one new draft text from a group on science services that describes a procedure for applying authoritative time stamps in electronic document exchanges, unless objections arise before April 19, the letter said. Proposed changes to another recommendation account for recent equipment developments in the pseudorandom noise code format for the operational use of two-way satellite time and frequency transfer, the letter said, and substantial editorial changes were made.