Note
However sometimes, especially in demonstrations or in a
lab environment, the cable is rolled randomly in small turns
for convenience. The randomly rolled UTP cable suffers
additional signal impairments (compared to a straight cable)
and therefore the maximal operating reach might be
reduced.
Rolling a CAT5E cable around a 70cm fixed diameter
plastic drum has just a minor effect on the FEXT (Far End
Cross Talk) when compared to a fully stretched cable.
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