Sirio CX-4-78 Base Antenna
The Sirio CX-4-78 is a 4m band base antenna, this one is designed to work between 78 and 83MHz. Features: Base station antenna. Mono-band. Low-gain. Omnidirectional. Protection from static discharges DC-Ground. Made of aluminium alloy 6063 T-832. Electrical Features: Type: 3/4 coaxial J-pole. Frequency range: tunable 78-83MHz. Impedance: 50Ohm. Radiation (H-plane): 360° omnidirectional. Radiation (E-plane): beamwidth -3 dB = 60°. Radiation angle: 3°. Polarization: linear vertical. Gain: 2dBd - 4.15 dBi. Bandwidth SWR 1.5: 2.5MHz - 78MHz. SWR: 1.2. Max Power (CW) 30°C: 500W. Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short. Connector: UHF-female. Mechanical Features: Materials: Aluminium, Brass, Stainless Steel, Nylon. Wind load / resistance: 97 N 150 Km/h / 150 Km/h. Wind surface: 0.08 m². Height (approx.): from 2700 to 3360mm. Weight (approx.): 1900g Mounting mast: 35-42mm.