Sirio CX-4 4m Base Antenna
CX4
Sirio CX-4-68 68-73MHz Base Antenna
An aluminium mono-band base station antenna for use on 4m band.
- Base station antenna, Mono-band
- Omnidirectional
- Tunable 68-73MHz by tuning chart
- Protection from static discharges DC-Ground
- Made of aluminium alloy 6063 T-832
Electrical Data
• Type: 3/4λ coaxial J-pole
• Frequency range: 68...73 MHz tunable by diagram
• Impedance: 50Ω unbalanced
• Radiation (H-plane): 360° omnidirectional
• Radiation (E-plane): beamwidth at -3 dB = 60°
• Radiation angle: 3°
• Polarization: vertical
• Gain: 2dBd - 4.15 dBi
• Bandwidth @ SWR 1.5: ≥ 1.7 MHz @ 68 MHz
• SWR. @ res. freq.: ≤ 1.2
• Max. power: 500 Watts
• Feed system / position: gamma match / base
• Connection: UHF-female
Mechanical Data
• Materials: Aluminium, Brass, Stainless Steel, Nylon
• Wind load / resistance: 97 N at 150 Km/h / 150 Km/h
• Wind surface: 0.08 m²
• Height (approx.): from 2700 to 3360 mm
• Weight (approx.): 1900 gr
• Mounting mast: Ø 35-42 mm
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