Efficient Uda Yagi directional antenna with very good front-to-back ratio by 3 reflector items. Mechanically stable design with 236cm cross girder beam for horizontal polarisation. Hardanodized aluminium surface of the items guaranty long-lived charge (permanently effect skin effect). Technical data: G 12,5 dBd, V/R 21 dB, alpha E 40°, alpha H 36°, L 336 cm, B 104 cm, H 85 cm, N-fermale.