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Message: [QUOTE="Tvip, post: 141229, member: 74729"]My guess is that APS had some requests for custom designs, or their designer had done some one-offs and decided to market them. Since it's difficult to get a Yagi to have consistent broadband characteristics (directionality as well as gain), and Brian Beezley has shown that optimized <a href="http://www.tvizleyim.com/tv8">Tv8</a> Yagis can have excellent gain/directivity for their size, I'm not too surprised. Note how closely-coupled the active dipole and first director are and the construction of the matching box; that seems to reflect recent design concepts.+1 bob.[/QUOTE]