Allen: The largest distributor is Anixter and they were the least expensive for Times Microwave. I purchased LMR 400, 400 UF, 600 and 600 UF from them along with all of the correct connectors. I have a commercial account with them. I am not sure how easy it is to get setup with them but it would be worth it. 73, Craig K9CT www.k9ct.us