4 big monobanders on 1 boom, no traps !!!  3el on 40m   /   4el on 20m   /   4el wide spaced on 15m   /   6el on 10m   OptiBeam OB17-4   17 Element, 4 Band       Bands   40 / 20 / 15 / 10 Gain (dBd) *   4,8 / 7,3 / 7,8 … Continue reading OptiBeam OB17-4 17 Element 4 Band