Dale, K5AKw wrote: "I can't find Amidon on the web. Can anyone help?" ========== I don't know if they maintain a Web site, but whenever I need the latest copy of their info sheet or to order some toroid cores, I call their toll-free number, which is (800) 898-1883. 73, de Earl, K6SE 68 countries with K2 #2622 and counting.....