How does atlc work?
• Answer: atlc uses a method known as finite differences. A paper describing the theory of this was published in the amateur radio journal QEX See: Finding the characteristics of Arbitrary transmission lines, D. Kirkby, QEX, December 1996, page 3-10. You can download a copy if you wish, or there should be a local copy. Note this is an old paper, so atlc has been much improved since that paper was written.