Definitions for "Category 3"
Keywords:  unshielded, tia, eia, mhz, ohm
Unshielded twisted pair with 100 ohm impedance and electrical characteristics supporting transmission at frequencies up to 16 MHz. Defined by the TIA/EIA 568-A specification.
Consists of 4 pairs of twisted pair wires used for medium speed communications of up to 10 megabits over distances of up to 100 meters. The FCC has specified that new homes use a minimum of CAT3 wiring for telephones in new home construction.
Transmission characteristics up to 16MHZ
Some roof and structural damage. Some caravans destroyed. Power failures likely. A Category 3 cyclone's strongest winds are VERY DESTRUCTIVE winds with gusts of 170 - 225 km/h. These winds correspond to the highest category on the Beaufort scale, Beaufort 12 (Hurricane).