The last time I looked at wire antennas compared to rhombics at 2m I concluded that gain was achieved far easier with NBS yagis than with a cats cradle of wire and in far less space. With a 50 foot wide flat roof available on a multi story building there was more gain available from a yagi with 20 foot boom and a single mast than stacked rhombics using the whole roof and multiple masts.
I also dug up the QST picture. 17.1 dbi is not much gain for an 8 foot boom. I have a 27 element SI loop yagi that did that (as I recall) with a 6 foot boom at a previous CSVHF conference. The 44 element KLM did more like 17.5 dbd (e.g. 19.9+ dbi) a few years ago. Its not really all that big... Unless I can find metric aluminum to build a copy of the really long DL6WU 1296 yagi, that KLM looks like what I will put up in the future.
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