Scott, Think your question is right on - about gigahertz. BUT you're the laminate supplier, so you know the answers. I've been pushing our SLC dielectric guys to get info at high frequency - gigahertz. The test labs we talk to say it will take several rounds of artwork to get the stripline set-up right to give us the proper info. That is, try a design, measure response, modify artwork and make parts again with photoimageable dielectric, test again, etc. And, you know how much MacDermid likes to spend money. Dave Hoover of Hadco (Groovey) is right. Some of the smaller (read in Teflon type) laminate suppliers are getting press because they've paid for the test work. Denny Fritz *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************