UTP Connecting Hardware by Brandy McNeilin Datacomm TablesFebruary 27, 2017 Attenuation / Next Loss Frequency (MHz) Category 3 (dB) Category 4 (dB) Category 5 (dB) 1.0 0.4/58 0.1/65 0.1/65 4.0 0.4/46 0.1/58 0.1/65 8.0 0.4/40 0.1/52 0.1/62 10.0 0.4/38 0.1/50 0.1/60 16.0 0.4/34 0.2/46 0.2/56 20.0 0.2/44 0.2/54 25.0 0.2/52 31.25 0.2/50 62.5 0.3/44 100.0 0.4/40