Can anybody tell me some more about the impedance of shielded and unshielded category 5 cable? This is the information I (think I) know:
Category 5 UTP -has 100 Ohms Characteristic Impedance Category 5 STP -has a foil and braid shield around all four pairs. -can be made to be 100 or 120 Ohms Category 5 FTP (foil twisted pair) -has a foil shield around all four pairs. -can be made to be 100 or 120 Ohms -120 Ohm used widely in France Can anybody tell me whether this is correct? Does anybody know where I can get some definative information about these cables? Which is the most popular in Telco applications? Thanks very much. AndyB
