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  • June 29, 2021 Tori Shields

    Using Underwater Telecommunication Cables to Detect Earthquakes

    Seismologists at Caltech working with optics experts at Google have developed a method to use existing underwater telecommunication cables to detect earthquakes. The technique could lead to improved earthquake and tsunami warning systems around the world.

    A vast network of more than a million kilometers of fiber optic cable lies at the bottom of Earth’s oceans. In the 1980s, telecommunication companies and governments began laying these cables, each of which can span thousands of kilometers. Today, the global network is considered the backbone of international telecommunications.

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  • June 29, 2021 Tori Shields

    America's 5G Future

    The FCC is taking action to make additional spectrum available for 5G services.

    • High-band: The FCC has made auctioning high-band spectrum a priority. The FCC concluded its first 5G spectrum auctions in the 28 GHz band; the 24 GHz band; and the upper 37 GHz, 39 GHz, and 47 GHz bands. With these auctions, the FCC is releasing almost 5 gigahertz of 5G spectrum into the market—more than all other flexible use bands combined. The FCC is also working to free up 2.75 gigahertz of 5G spectrum in the 26 and 42 GHz bands and it has initiated a proceeding to make more efficient use of additional millimeter-band spectrum in the 70/80/90 GHz bands.
    • Mid-band: Mid-band spectrum has become a target for 5G buildout given its balanced coverage and capacity characteristics. With our work on the 2.5 GHz, 3.5 GHz, and 3.7-4.2 GHz bands, we will make more than 600 megahertz available for 5G deployments...
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