I see in the Radio Shack catalog they have a telephone RFI filter. looks very much the same as the K-Com. 73 Jim KI7Y -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com Search: http://www.contesting.com/km9p/search