Why unshielded twisted pair wires are low-pass in nature.

Papabravo

Joined Feb 24, 2006
16,793
The reason is that a twisted pair of wires has distributed series inductance and distributed shunt capacitance. These properties are expressed in Henrys per foot and Farads per foot with appropriate prefixes to select the magnitude. The simulation model would look like a long chain of L-sections which have a low pass characteristic. Coaxial cable depending on it's geometry has a much greater capacity to pass high frequency signals. Hardline is actually a wire inside a large metal cylinder and is not actually cable, more like bendable conduit with foam inside.

https://www.solidsignal.com/rfs-7-8...4btDuI1og_Z8swmeJ6HT5A8mqS6N365xoCd6sQAvD_BwE

That price is per foot.
 
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