Features: • CB Base station antennas • Directional, High-gain • Horizontal polarization Factory tuned at mid-band • High power handling capability • Elements equipped with waterproof jointing sleeve • Made of aluminium alloy 6063 T-832 Electrical Data • Frequency range: 26-28 MHz • Impedance: 50 Ohm unbalanced • Radiation (H-plane): directional • Polarization: horizontal • Gain: SY 27-4: 11 dBd, 13.15 dBi • Bandwidth at S.W.R. 2:1: SY 27-4: 600 KHz • S.W.R. at res. freq.: = 1.2:1 • Max. power: 1000 Watts (CW) continuous