Mr. Kuwako wrote: Is anybody know the test laboratory who can measure dielectric constant and dissipation factor of pwb material up to GHz? ********* Reply: Mr. Kuwako, There is a testlab associated with the University of Ghent, Belgium that has the capability to measure various aspects of materials and transmission lines for very high frequencies (over 30GHz). Although I am not related to the laboratory or to the university I know enough of their capablities and expertise that they could provide you with such a service. Anyway, the person to contact is the head of the laboratory prof. Luc Martens. This is his e-mail address: [log in to unmask] Jan Vercammen Agfa N.V. [log in to unmask] ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################