1/4 wave Ground Plane antenna for base station service working on 40-70 MHz.

Specification

• Type: 1/4 wave ground plane
• Radiation: omnidirectional
• Polarization: Linear vertical
• Frequency range: 40-70 MHz Tunable
• GPA 40-70: 3.7MHz @ SWR 2
• Max Power - 1000w (CW)
• Connector: UHF-female (SO-239)

Electrical Data

• Type : 1/4 wave Ground Plane
• Frequency Range: 40-70 MHz tunable by diagram
• Impedance: 50 Ohms Unbalanced
• Radiation (H-plane): 360o Omnidirectional
• Radiation (E-plane): Beamwidth at -3 dB = 86o
• Radiation angle deg.: 0o
• Polarization: Vertical
• Gain: 0 dBd - 2.15 dBi
• Bandwidth at V.S.W.R.: 2:1 : 3.5 MHz at 40 MHz
• V.S.W.R. at res. freq.: less than 1.2 : 1
• Max Power: 1000 Watts
• Feed System / Position: Direct / Center
• Connection: UHF Female

Mechanical Data:

• Materials: Aluminium, Chromed Brass, Nylon, Stainless Steel
• Wind Load / Resistance: 85 N at 150 Km/h / 150 Km/h
• Wind Surface: 0.07 m2
• Height (approx.): 3200 mm
• Weight (approx.): 935 gr
• Radial Length (approx): 1800 mm
• Mounting Mast Diameter: 35-40 mm