Many folks simply stand the rear of the boom on a plastic bucket or some such and point the beam up to the sky (straight up). Then do SWR adjustments. Works for me. de 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