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VHF, 3 dBi, one piece whip, dipole, end feed, BI thread mount, 1.25 m, 145-165 MHz


The AV51BI4 is a high-quality dipole antenna designed for the maritime VHF radio telephone service.  It is designed for use on pleasure craft, but the high quality means it may be installed on all kinds of vessels.  It comes with integrated BNC coaxial connector.

Frequency Range 156-162 MHz, VSWR < 1.5 : 1
145-165 MHz, VSWR < 2 : 1
Nominal Impedance 50 Ω
Power Rating 100 W
Gain See Charts Tab
Pattern Horizontal plane: Omnidirectional
Vertical plane: See Charts Tab
Polarisation Vertical
Connector BNC female
DC Grounded Yes
Design Centre fed coaxial dipole. Radiating element completely enclosed in polyurethane foam within a fibreglass tube. Stainless steel bracket.
Height 1.25 m
Weight 0.5 kg
Wind Rating 55 m/s = 201 km/h
Finish Polyurethane lacquer, white
Water Proofing IP67
Temperature Range – 55°C to + 71°C
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