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cone-of-silence marker |
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cone-of-silence marker [¦kōn əv ′sī·ləns ‚märk·ər] (navigation) A marker beacon, usually a Z (for zone) marker beacon, located at a radio-range station; operates at 75 megahertz and produces a light signal accompanied by a 3000-hertz tone. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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