Sirio CX-4-68 Base Antenna



The Sirio CX-4-68 is a 4m band base antenna, designed to work between 68 and 73 MHz. 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: 3/4λ coaxial J-pole. Frequency range: CX 4-68: tunable 68-73MHz, CX 4-73: tunable 73-78MHz, CX 4-78: tunable 78-83MHz, CX 4-83: tunable 83-88MHz. Impedance: 50Ohm. Radiation (H-plane): 360° omnidirectiona Radiation (E-plane): beamwidth @ -3 dB = 60°. Radiation angle: 3°. Polarization: linear vertical. Gain: 2dBd - 4.15 dBi. Bandwidth @ SWR 1.5: CX 4-68: 1.7MHz - 68MHz, CX 4-73: 2.0MHz - 73MHz, CX 4-78: 2.5MHz - 78MHz, CX 4-83: 2.5MHz - 83MHz. 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.

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