What frequency in MHz is associated with TIA Category 3 for balanced twisted-pair cabling?

The correct frequency associated with TIA Category 3 for balanced twisted-pair cabling is 10 MHz. Category 3 cabling was initially designed for voice communication and supports data transmission speeds of up to 10 Mbps, primarily used for telephone lines and early data networks.

While other categories exist with higher frequency specifications—like Category 5, which supports frequencies up to 100 MHz, and Category 5e/6 which support even higher frequencies—the characteristic frequency for Category 3 remains at 10 MHz, making it suitable for specific applications, such as 10Base-T Ethernet. Understanding these specifications helps clarify the capabilities and limitations of different cabling types in networking environments.