The Sirio SY68-3 is a top-quality 4-metre beam antenna that offers high-gain directional capabilities. With the increase in activity on the 4m band, this antenna will give you a competitive edge and enable you to make impressive contacts. Made of aluminium alloy 6063 T-832, it boasts excellent construction quality. The antenna operates within a frequency range of 68-78 Mhz with an impedance of 50 Ohms. It has a 3-element Yagi design and offers a beamwidth of 130° in the H-plane and 70° in the E-plane. With a gain of 4.85 dBd - 7 dBi and a maximum power of 350 Watts, this antenna delivers excellent performance. It features linear vertical or horizontal polarization and has a front-to-back ratio of 15 dB. The Sirio SY68-3 is also designed with grounding protection and comes with a UHF-female connector with a rubber protection cap. In terms of mechanical specifications, the antenna is made of aluminium, die-cast Zamak, EPDM rubber, zinc-plated steel, and chromed brass. It has a wind load of 203 N at 150 Km/h and can withstand wind speeds of up to 120 Km/h. The dimensions of the antenna are approximately 1600x2235 mm, with a boom/elements diameter of 33mm/16mm. The turning radius is approximately 1875 mm, and it weighs around 3360 gr. The operating temperature range is -40° C to +80° C, making it suitable for various weather conditions. The antenna can be mounted on a mast with a diameter of 35-52 mm.