See http://www.polyphaser.com/download/PTD1016.pdf 73, Dick -- Dick Flanagan W6OLD CFII Minden, Nevada (South of Reno) Visit http://www.cvrc.net/ -- FAQ on WWW: http://www.contesting.com/FAQ/towertalk Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com