Product Details
Digital Antenna 594-MB 4' VHF/AIS Antenna; 4.5 dB Gain – Black
Dual-Band VHF / AIS Antenna
4.5 dBi Gain
Designed for both VHF and AIS communication, Digital Antenna’s 594-MB delivers enhanced range and clarity with its 4.5 dB gain. Ideal for sailboats, speedboats, or any marine setting requiring dependable dual-signal performance, this versatile antenna ensures superior transmit and receive performance across channels.
Proudly made in the USA, each antenna is hand-assembled, hand-tuned, and tested for exceptional quality and longevity. Installation is simple with the factory-installed mini-UHF connector and included PL-259 adapter—no soldering required.
Features:
- Monopole design compatible with AIS Class A & B, AIS transponders, Smart AIS, and AIS receivers
- Optimized for combined VHF (≈156 MHz) and AIS (≈162 MHz) frequencies
- 4.5 dBi omni-directional gain with VSWR < 1.5:1 across both bands
- Fiberglass shaft with UV-stable black polyurethane finish
- 316 stainless steel ferrule for corrosion resistance
- Hand-soldered brass radiators
- Power-directing ferrite choke bead
- Factory-installed mini-UHF connector with PL-259 adapter—no soldering needed
- 5-year limited warranty
Specifications:
- Length: 4' (48")
- Cable: 15' low-loss, tinned-braid, foil-shielded, UV-stable RG-8X (included)
- Impedance: 50 Ω
- Max Input Power: 50 W
- VSWR: < 1.5:1 across 156–162.5 MHz (6.5 MHz bandwidth)
- Polarization: Vertical
- Wind Rating: > 160 km/h (~100 mph)
- Operating Temperature: –30°F to +175°F
- Weight: ~1.7 lbs
Part Identification:
- Model: 594-MB (black finish)
Ideal For:
- Vessels requiring dependable VHF and AIS communication in a single antenna
- Commercial, recreational, or professional marine installations
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