The World Meteorological Organization is increasingly concerned a...
The World Meteorological Organization is increasingly concerned about possible allocations to the mobile satellite service at the 2012 World Radiocommunication Conference (WRC), said Philippe Tristant, chairman of the organization’s Steering Group on Radio Frequency Coordination. Participants in an ITU-R…
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satellite group have made a short list of nine frequency bands for study, he told us in the hallway during a joint seminar with ITU on spectrum use. New WMO concerns have arisen about frequencies at 7.6 GHz, used for passive sensing over oceans, and between 10.6 and 10.7 GHz, which are used as a passive band for Earth observation, Tristant said. The bands’ physical properties make them most suitable for certain measurements, which with readings from other bands, spur accuracy, Tristant said. The WMO is also very concerned about 7.8 GHz, which is used as a downlink by meteorological satellites to many earth stations, Tristant said. Mobile satellite is considering using the band for uplink, he said. Earlier this month, the ITU-R group identified for study for possible allocation to mobile satellite service at the WRC, 4.4 to 4.5 GHz, 4.8 to 4.99 GHz, 5.15 to 5.25 GHz, 7.055 to 7.25 GHz, 8.4 to 8.5 GHz, 10.5 to 10.6 GHz, 13.25 to 13.4 GHz and 14.8 to 15.35 GHz. The WMO’s preliminary positions have been updated, but aren’t yet approved, Tristant said (CD Oct 15/08 p6).