An optional IR transmitter offers greater installation flexibility with a transmission distance of up to 33 feet.

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Riding on cutting-edge technologies such as flex oDSP, super SD-FEC, and flex modulation format, this field trial achieved a record-breaking transmission distance of 1, 500 km using a super-channel PDM-16QAM-based high spectral efficiency solution, and a second record-breaking transmission distance of 3, 325 km using a super-channel Nyquist PDM-QPSK-based ultra-long-haul solution.

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Big developments in long-distance transmission lines, which are promised, could be most valuable of all.

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Generating plants and long-distance transmission weathered Sandy just fine.

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At 400 kilovolts, a standard value for long-distance transmission, an alternating current 30 metres (100 feet) from the ground has a fortieth of the loss of a similar cable at ground level.

ECONOMIST: Power transmission

It could facilitate investments in electric grid improvements that enable long-distance transmission of renewable energy, as well as provide consistent long-term policy on grid upgrades and electric vehicle charging that makes utility investments predictably worthwhile.

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That is the reason why the current emphasis in China is on the construction of 500kv extra-high-voltage lines and long-distance power transmission.

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Bluetooth is a low-cost wireless radio transmission specification for creating personal networks of up to eight devices at a distance of 10 to 100 feet.

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