A pair of redesigned web sites from Anatech Electronics, one for custom products and one for online purchasing, are designed to simplify the process of specifying filters and other RF/microwave components. In addition to filters, the firm also offers duplexers, attenuators, directional couplers, circulators, terminations power combiners/dividers, EMI filters, and lightning arrestors, with products serving a variety of applications including wireless communications, defense electronics, and satellite communications (satcom) systems. Both sites provide detailed technical documents including specifiers' guides and tutorials, as well as a Technical Reference Workbook interactive tool for automatically calculating many parameters of interest to users of filters and of the company's other products.