Description
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
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 mē
Height (approx.): from 2700 to 3360 mm
Weight (approx.): 1900 gr
Mounting mast: Ø 35-42 mm
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