Hi, Recently, I run into some basic beliefs about Xtalk from my colleagues. They seem match intuiations but may not be right. Statement 1: Single-ended near-end Xtalk is always greater than far-end Xtalk, both in f and t domains. Statement 2: Differential/Common near-end Xtalk is always greater than the far-end, both in f and t domains. I do not remember any general proofs of the above statements. They may be true for many practical cases but may not be generally true. One example in S. H. Hall's book, p.50. disproves the statement 1 in t-domain. Any more helps? Mick ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu