This is only MY educated opinion......
A 3-element beam will give you x amount of gain and predictable signal pattern. Stacking a set of 3-element beams will give you 3db more gain, with about the same signal pattern. Stacking beams has its own set of problems mechanically.
A larger beam (5 to 7 elements) will give you MORE gain and have a tighter "killing field" (pattern).
Originally Posted by distortion
How would this perform in comparison to say a 7 element Maco, or a 5 element Maco.
You would have less gain and a bigger pattern, but would work just fine!
I feel a 5-element beam is the antenna of choice. While 6 and 7 element beams will give you more gain, they are longer, heavier, and harder to work with. Unless you know what you are doing, you can actually degrade the performance of a beam by adding more elements.
Tests have proven that people would get better results by REMOVING one of the elements from a Cushcraft 11-element 2-meter beam and re-spacing them on the same boom. Yep, the 10-element outperformed the 11 element on the same boom!
5-elements on a longer boom works better than 5 elements on a shorter boom.
There are a number of ways to get gain. I always recommend buying the best antenna and COAX you can afford. If you need more gain, use a clean amp.
I'll have more to follow! I need to snap a few pictures first!