John, Check out this web site as well as page 124 of May QST. This site says prototype but it is advertized for sale in the QST. http://www.n9adg.com/articles/antennas/steppir-dream-beam-prototype.html Coy -- Coy Day, N5OK 20685 SW 29 Union City, OK 73090 405-483-5632