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LTBOTA report: it turns out this Lenticular Truss Bridge makes an excellent receive antenna, but notsomuch Tx: only 1 contact with a POTA activator in Kentucky on 20m. The band was packed with stations from the west coast of the U.S. to Europe. I fed the thing at the center of the span on a vertical structural member. It tuned on all bands, but I didn't bring a common mode choke, so got bad feedback and a little bit of a zap while trying to transmit on 40 and 80m.