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Attenuation for Coaxial and UTP Cables

Attenuation (dB/100 meters)
Frequency
(MHz)
Thick
Coax
Thin
Coax
Cat. 3
UTP
Cat. 4
UTP
Cat.5
UTP
1 0.62 1.41 2.6 2.2 2.0
10 1.70 4.26 9.7 6.9 6.5
20 6.00 10.0 9.3
50 3.94 9.54
100 13.70 22.0
Note: UTP figures are based on TIA/EIA
requirements for horizontal cable.

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