Google Answers: Attenuation and Repeaters

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Q: Attenuation and Repeaters ( No Answer, 0 Comments )

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Subject: Attenuation and Repeaters
Category: Computers > Algorithms
Asked by: dee296-ga
List Price: $10.00

Posted: 06 Aug 2005 19:58 PDT
Expires: 08 Aug 2005 17:34 PDT
Question ID: 552612

Please show all work.

If a maximum attenuation between repeaters of 60 dB is allowed for a
fiber-optic system, determine, the maximum repeater spacing for the
two fiber attenuation characteristics of 0.5 dB/1,000 ft (Cable A) and
0.025 dB/1,000 ft (Cable B). How many repeaters would be required for
a fiber-optic system of each attenuation characteristic circling the
Earth at the equator? Assume that the diameter of the Earth is 12,000
km.

Take 1 km = 3,281 ft.

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