Direttiva 4 elem. VHF

Base station antenna, Directional
Wide band, High-gain
Highly symmetrical radiation pattern in both planes (E and H)
Protection from static discharges DC-ground
Made of anodized aluminium alloy
Stacked and bayed array for more gain
Optional: tilting bracket for +-20°
P/N 2113801/140    WY 140-4N
P/N 2113801/155    WY 155-4N
Electrical Data
Type: 4 elements yagi antenna
Frequency range:
 WY 140-4N: 140-160 MHz
 WY 155-4N: 155-175 MHz
Impedance: 50Ω unbalanced
Radiation (H-plane): beamwidth at -3 dB =
 WY 140-4N: 100° at center freq.
 WY 155-4N: 100° at center freq.
Radiation (E-plane): beamwidth at -3 dB =
 WY 140-4N: 65° at center freq.
 WY 155-4N: 65° at center freq.
Radiation angle: 0°
Front to back ratio: ≥ 16 dB
Polarization: linear vertical or horizontal
Gain: 8.5 dBi
SWR in bandwidth: ≤ 1.5:1
Max. power: 200 Watts (CW) at 30° C
Feed system / position: RG303 teflon coax with balun / inside boom
Connector: N-female with rubber protection cap
Mechanical Data
Materials: Anodized 6063-T5 Aluminium, EPDM rubber, thermoplastic UV stabilized, Chromed brass
Wind load / resistance: 147 N at 150 Km/h / 140 Km/h
Wind surface: 0.119 m²
Dimensions (approx.):
 WY 140-4N: 1600 x 1085 mm
 WY 155-4N: 1600 x 985 mm
Weight (approx.):
 WY 140-4N: 2070 gr
 WY 155-4N: 2015 gr
Tourning radius:
 WY 140-4N: 1540 mm
 WY 155-4N: 1530 mm
Operating temperature: -40° C to +60° C
Mounting mast: Ø 35-52 mm