Further down in the message you replied to, you will find Jeff's link: "> > url to my study on microstrip vs. stripline loss: > > http://pcdandm.com/cms/content/view/2572/95/ > > " Regards, Orin Laney On Mon, 27 Aug 2007 15:51:32 -0700 "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx> writes: > Orin, > > I'm not sure what article you are referring to, but if they are the > two > columns in Circuitree, the material in question is FR408 not > Nelco4000-13SI. > > I'd be interested to know what the nasty FR-4 is you speak of is. > I've not > seen any that is all that bad. I've seen glass weaves that ar > eterrible, > but that is independent of the resin system. > > We are all interested in making things work for the lowest possible > cost > and that means avoiding expensive "microwave" material if possible. > In > most cases it turns out it it. > > As always, it takes good analysis to decide what good enough is as > you > point out. > > Lee > ------------------------------------------------------------------ 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