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Features
- High-performance VHF antenna with co-axial feed to receiver.
- Stainless steel elements for strength, light weight, corrosion resistance and low wind resistance, with UV-resistant plastic casing.
- Fits standard 1"×14 marine thread base.
- Supplied with comprehensive assembly and installation manual and installation kit (cable ties, waterproof tape, etc).
- Optional pre-amplifier (VP1) for cable runs exceeding 10 metres.
Antenna type
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Half-turn quadrifilar helix
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Polarisation
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Right-hand circular
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Nominal impedance
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50Ω (N-type socket termination)
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Peak gain
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4dBiC
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Frequency coverage
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136MHz to 138MHz
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VSWR
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Better than 1.5:1
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Diameter
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355mm (approximately)
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Height
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810mm (approximately)
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Weight
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1.4kg (approximately)
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Internal VHF pre-amplifier (VP1)
- High-performance VHF pre-amplifier, required for cable runs exceeding 10 metres with quadrifilar helix VHF antenna (QH137M).
- Powered from receiver through co-axial cable.
- Supplied sealed inside antenna casing for maximum protection from the weather.
Noise figure
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1dB (typically)
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Gain
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12dB ±1dB
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Bandwidth
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136MHz to 138MHz
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Dartcom quadrifilar helix VHF antenna, featuring UV-resistant plastic casing and corrosion-resistant stainless steel elements
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