Webb HD400 UHF Base Station Antennae.
An excellent aerial for directional transmission from a base station/control room.
Remember; Erecting an antennae is a specialised task and must be done properly to get best Rx/Tx results.
Electrical Data HD400
Frequency Range 380 � 470 MHz
Average Gain 0 dBd
Nom. Gain on Support Pole 2 dBd
VSWR � 1.5:1
Polarisation Vertical
H Plane 3dB beamwidth 180�
E Plane 3dB beamwidth66�
Rated power 150 Watts
Impedance 50 Ohms
Termination N-Type female
Lightning Protection All metal parts DC Grounded
Mechanical Data HD400
Maximum wind velocity 200 km/h
Windload @ 144 km/h 2.0 kg
Equivalent Flat Plate Area 0.018 m_
Material Aluminium with moulded cover
Mounting To 25 � 50 mm � support pipe with integral V-bolt.
Antenna Dimensions 0.2 m long x 0.3 m high
Packaged weight / Volume 0.7 kg / 32 x 25 x 10 cm
Typical horizontal pattern
Typical vertical pattern
Vertical polarization.
Normalised scale �not gain.
Specification subject to change without notice. Issue 3
Typical Horizontal Pattern
Note: Cable NOT included.
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