Astronomers get radio protection.
Last month, astronomers who focus on millimeter-wave emissions won protection for the signals they measure. At the World Radiocommunication Conference in Istanbul, Turkey, delegates agreed to reserve for astronomers nearly all microwave frequencies between 71 and 275 gigahertz that can pass through Earth's atmosphere. Millimeter-wave telescopes are vulnerable to interference from satellite signals at these frequencies.
Although commercial satellites don't currently broadcast at these high frequencies, now astronomers won't have to worry about interference from these or other devices in the future. The new agreement is "a win for millimeter-wave science," says delegate John Whiteoak of the Australia Telescope National Facility in Epping.
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|Article Type:||Brief Article|
|Date:||Jul 22, 2000|
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