Sirio Sy27-3 3 Elements Tunable 26.5-30mhz Yagi Antenna Base station antennas Directional, High-gain Horizontal polarization Factory tuned at mid-band High power handling capability Elements equipped whit waterproof jointing sleeve Made of aluminium alloy 6063 T-832 Type: SY 27-3: 3 element Yagi antenna Frequency range: SY 27-3: 26.5-30mhz at SWR  2 Impedance: 50 Radiation (H-plane): directional Polarization: linear horizontal Gain: SY 27-3: 8.5 dBd, 10.65 dBi Bandwidth at SWR  2: SY 27-3:  1800 KHz SWR at res. freq.:  1.2 Max. power: 1000 Watts (CW) continuous 3000 Watts (CW) short time Feed system / position: Gamma match / center Connector: UHF-female Materials: Aluminium, Steel, Nylon Wind load: SY 27-3: 86 N at 150 Km/h Wind resistance: 120 Km/h Wind surface: 0.07 m Dimensions (approx.): SY 27-3: 5740x2710x100 mm Boom length / diameter: SY 27-3: 2710 mm / 33 mm Max. element length (approx.): SY 27-3: 5740 mm Turning radius (approx.): SY 27-3: 3200 mm Weight (approx.): SY 27-3: 4700 gr Mounting mast:  35-50 mm