Hi All, In an effort to save my company some $$$ on PWB's I began investigating the cost of purchasing boards with and without specifying controlled impedance (on the PWB drawing). Almost all of our boards specify impedance control even if there are only a handful of transmission lines. I was surprised to learn from the two fabricators I spoke with that there is no additional cost for impedance control other than a small cost adder of about 2-5% if all panels require testing. I found this very surprising. Has anyone else had the same experience? Thanks much! Regards, Rick Rick Smith Manager, Engineering Systems & Services [cid:[log in to unmask]] Access Transport & Supplies 15 Sterling Drive Wallingford, CT 06492 Phone 203.639.7670 E-mail [log in to unmask]<mailto:[log in to unmask]> Web http://www.arrisi.com --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------