I purchased my HDBX-48 by going to the factory (bought three) in 1977 or 78. So, maybe Rohn has changed the BX designs since then. K4VUD -- 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.htm