Description
4' VHF/AIS Antenna - 4.5dBi Gain | Boat Supply Store
Engineered to enhance digital VHF and AIS signal reception and transmission, this 4-foot antenna provides superior range for critical maritime communications. It achieves a low SWR of less than 1.5:1 across both VHF and AIS frequencies, ensuring optimal signal fidelity. The rugged 4.5dBi omni-directional gain and a 316 stainless steel base with a 1"x14 female thread facilitate robust mounting and reliable performance, ideal for offshore fishing vessels operating along the Texas coast.
Key Features
- Optimized for Digital AIS/VHF signals
- Achieves 4.5dBi Omni-directional gain for superior range
- Constructed with a rugged fiberglass rod featuring a UV stable finish
- Ensures secure soldered connections for long-term reliability
- Built with a durable 316 stainless steel base
- Features a standard 1"x14 female threaded base for universal mounting
- Includes a 15' premium low-loss RG-8X cable
- Equipped with a factory-installed mini-UHF connector for simplified installation
Specifications
| Product Specifications | |
|---|---|
| Length | 4-foot |
| Color | White |
| Gain | 4.5dBi omni-directional |
| Frequency | VHF and AIS |
| VSWR | Less than 1.5:1 |
| Base Material | 316 stainless steel |
| Base Thread | 1"x14 female |
| Cable Type | 15-foot RG-8X low-loss |
| Connector | Factory-installed mini-UHF |
| Adapter Included | PL259 |
| Maximum Input Power | 50 watts |
| Warranty | 5-year |
Who This Is For
Commercial, recreational, and government vessel operators requiring dependable VHF and AIS communication, particularly those utilizing combined VHF/AIS radios or needing AIS for regulatory compliance.
How It Compares
| Feature | 4' VHF/AIS Antenna - 4.5dBi Gain | Shakespeare 5215 |
|---|---|---|
| Gain | 4.5dBi | 3dB, 3dB |
| Length | 4' | 5', 3' |
| Cable Type | RG-8X | RG-8X, RG-58 |
| Primary Connector | Mini-UHF (includes PL259 adapter) | PL-259, PL-259 |
| SWR (VHF/AIS) | <1.5:1 | 1.5:1 max, null |
| Max Input Power | 50 watts | 50 watts, 50 watts |
| Warranty | 5 Years | 1 Year, null |
Common Concerns Answered
Some users prefer a longer cable. What are the options?
This antenna includes a 15-foot RG-8X cable. For longer cable runs, users may need to source an extension cable or a cable with an integrated longer length, ensuring compatibility with the mini-UHF connector or using appropriate adapters.
Does the mini-UHF connector require special adapters?
The antenna comes factory-equipped with a mini-UHF connector and includes a PL259 adapter, ensuring compatibility with most standard VHF marine radio connections. If your radio utilizes a different connector type, a suitable adapter will be necessary.
Is this antenna significantly better than a standard VHF antenna for AIS?
This antenna is specifically engineered to optimize performance for both VHF and AIS digital signals, featuring a low SWR (<1.5:1) critical for effective AIS data transmission and reception. This specialization ensures superior range and reliability compared to general-purpose VHF antennas.
Frequently Asked Questions
What is the gain of the Digital Antenna 594-MW?
The Digital Antenna 594-MW features an omni-directional gain of 4.5dBi.
What type of connector does the Digital Antenna 594-MW have?
The Digital Antenna 594-MW has a factory-installed mini-UHF connector, and a PL259 adapter is included.
What is the SWR rating for this antenna on VHF and AIS frequencies?
This antenna maintains a VSWR of less than 1.5:1 on both VHF and AIS frequencies.
What is the maximum input power for this antenna?
The Digital Antenna 594-MW has a maximum input power rating of 50 watts.
What is the warranty period for the Digital Antenna 594-MW?
The Digital Antenna 594-MW comes with a 5-year warranty.
