Topband: Zo of an individual CAT5 twisted pair

[Jim Brown]

On 8/13/2013 5:07 AM, Shoppa, Tim wrote:
> A transformer that is connected such that it is UNbalanced on one side and BALanced on the other, and connected that way on purpose, is not a balun?

A transformer is a transformer is a transformer. For more than a 
century, we have used plain, ordinary transformers in exactly this 
manner in audio circuits, in the input and output stages of radios, in 
power supplies, and in the power distribution system, and we have called 
them transformers. Indeed, they are transformers. In power circuits, 
audio circuits, they are wound on some sort of magnetic core. In RF 
circuits, they may be wound on a magnetic core, or an air core, 
depending on circuit impedances and operating frequencies.

73, Jim K9YC