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An optical ground wire (also known as an OPGW or, in the IEEE standard, an optical fiber composite overhead ground wire) is a type of cable that is used in overhead power lines. Such cable combines the functions of grounding and communications .
Loss = dB loss per connector × number of connectors + dB loss per splice × number of splices + dB loss per kilometer × kilometers of fiber, where the dB loss per kilometer is a function of the type of fiber and can be found in the manufacturer's specifications. For example, a typical 1550 nm single-mode fiber has a loss of 0.3 dB per kilometer.
This is an accepted version of this page This is the latest accepted revision, reviewed on 22 December 2024. Cable assembly containing one or more optical fibers that are used to carry light A TOSLINK optical fiber cable with a clear jacket. These cables are used mainly for digital audio connections between devices. A fiber-optic cable, also known as an optical-fiber cable, is an assembly ...
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Average miles driven per year: 16,585. Average price for a new model: $26,351. Price per 1,000 miles: $1,589. Data is sourced from iSeeCars.com and is accurate as of Apr. 30, 2024. More From ...
1. Porsche 911. Average miles driven per year: 3,847 Average price for a new model: $166,229 Price per 1,000 miles: $43,214 Learn More: These 10 Used Cars Will Last Longer Than an Average New ...
(dB) ≈ 36.6 dB + 20 log10[frequency (MHz)] + 20 log10[distance (miles)] These alternative forms can be derived by substituting wavelength with the ratio of propagation velocity ( c , approximately 3 × 10 8 m/s ) divided by frequency, and by inserting the proper conversion factors between km or miles and meters, and between MHz and (1/s).
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