TWAYRDIO Marine VHF Antenna, 3.6ft White Fiberglass Waterproof Boat Antenna w/23ft RG58 Coaxial Cable PL-259 Connector and Adjustable Ratchet Fixed Mount
Quick take
This TWAYRDIO marine VHF antenna is a 3.6 ft (1.1 m) fiberglass, weather-resistant option made for small to medium vessels. It’s designed to cover the full 156 to 163 MHz marine band and ships with a 23 ft RG-58U coax cable and PL-259 connector to simplify typical radio-to-mast installs. The main buying caveat is compatibility: you’ll want to confirm your radio’s antenna connector (commonly SO-239) and ensure the 1"-14 threaded ratchet mount fits your deck or side mounting setup.
Pros and cons
Pros
- Marine VHF coverage across 156 to 163 MHz with 50 ohm impedance and nominal VSWR of 1.5:1 at 159.5 MHz.
- Fiberglass radome built to resist seawater, salt spray, and humidity for ongoing use on the water.
- Includes 23 ft RG-58U coax with PL-259 connector, which can reduce extra cabling and connectors.
- Adjustable 180-degree ratchet fixed mount for positioning the antenna for travel or better placement.
Cons
- Works only if your radio setup matches the expected connector pairing (PL-259 to SO-239).
- RG-58U is included, so range and installation results may depend on cable routing and onboard environment.
- At 3.6 ft tall, it’s best suited for small to medium boats rather than large vessels that may require different antenna systems.
What buyers think
Buyer-review evidence is limited, but the feedback themes that do show up are generally positive on fit and basic performance for the intended marine use case. Some buyers mention the antenna matching an existing setup and working after installation, and others call out it as a good value with straightforward installation. A small amount of review evidence also points to occasional arrival issues in isolated cases, so it’s smart to inspect the antenna and mount on delivery before you start drilling or finalizing your installation.
Key specs that matter for marine VHF
- Frequency range: 156 to 163 MHz (covers the marine VHF band, centered around 159.5 MHz).
- Gain and pattern: 3 dBi gain, with vertical polarization (360 degree horizontal beam width, 58 degree vertical beam width).
- Impedance and power: 50 ohm impedance, nominal VSWR 1.5:1 at 159.5 MHz, and up to 50 W maximum power input.
- Construction: White fiberglass radome (lightweight, strong) and a mount described as resistant to salt spray and humidity, intended for marine conditions.
Design and installation experience
Weather-resistant fiberglass for typical on-water use
The antenna uses a white fiberglass radome intended to handle flex and weather exposure, with materials meant to resist seawater and humidity. If your vessel sees regular salt-air exposure, this is the type of construction you typically look for in a VHF antenna meant to stay mounted year-round.
Included cable can simplify your setup
The package includes 23 ft (7 m) of RG-58U coax terminated with a PL-259 connector. For many installs, that reduces the need to source a compatible cable length separately, and it helps you plan routing from the antenna location back to your VHF radio without over-relying on extra adapters.
Ratchet fixed mount, built for raising and lowering
The adjustable ratchet mount (1"-14 threaded) is meant for deck or side mounting and provides multiple angle positions. That can be useful for optimizing antenna placement on your boat’s structure, and for lowering the antenna when you travel or stow gear.
Who this antenna is best for
- Owners of small to medium boats (such as yachts, sailboats, fishing boats, and similar craft) who want a compact VHF antenna with an all-in-one installation kit.
- Buyers who prefer simpler installs thanks to the included 23 ft RG-58U coax and PL-259 termination.
- Users who need a corrosion-resistant outdoor setup for offshore, inland waterways, and daily operational use.
Who should avoid it
- If you cannot confirm connector compatibility (PL-259 to a radio antenna connector commonly using an SO-239), you may need extra parts before installing.
- If you’re upgrading a larger-vessel antenna system that requires a different height, mounting approach, or RF strategy, a 3.6 ft mast may not match your performance expectations.
- If your cable plan is complex (tight routing, lots of sharp bends, or long runs beyond what you can manage), the included RG-58U length and your installation choices will matter more.
Pros and tradeoffs, in plain terms
For many boaters, the biggest strengths here are straightforward: marine-band coverage, a corrosion-resistant fiberglass construction, and an install kit that reduces guesswork (coax length plus PL-259). The main tradeoff is that performance depends on correct pairing and mounting, including connector compatibility and how the cable is routed in your specific vessel.
If you’re comparing options, focus on these decision points: antenna height and mounting style for your boat, the exact frequency range you need (this one matches marine VHF), coax type and length, and whether your radio expects the SO-239 style connector.
Price and availability
Pricing can change, and availability may fluctuate. If you want this exact antenna and kit, check the latest listing for current price and stock status, especially since limited stock notices can affect delivery timelines.
FAQ
What marine VHF frequencies does this antenna cover?
It’s rated for the 156 to 163 MHz marine VHF band (centered around 159.5 MHz).
Is this antenna compatible with my VHF radio?
The included coax ends in a PL-259 connector, which typically mates with an SO-239 antenna connector on many marine radios. If your radio uses a different antenna connector type, you may need an adapter or a different cable.
How tall is the antenna, and does the mount let you stow it?
The antenna is 3.6 ft (1.1 m) tall. The adjustable ratchet fixed mount is designed to change the antenna position, including lowering for travel.
What cable is included, and how long is it?
The kit includes 23 ft (7 m) of RG-58U coax with a PL-259 connector.
What’s the power rating?
It lists a maximum power input of 50 W and a nominal VSWR of 1.5:1 at 159.5 MHz.
Specifications
| Product Title | TWAYRDIO Marine VHF Antenna, 3.6ft White Fiberglass Waterproof Boat Antenna w/23ft RG58 Coaxial Cable PL-259 Connector and Adjustable Ratchet Fixed Mount |
|---|---|
| Category | Electronics > Car & Vehicle Electronics > Marine Electronics > Marine Antennas |
| Brand | TWAYRDIO |
| Manufacturer | TWAYRDIO |
| Model Number | VHF Marine Antenna |
| Color | White |
| AntennaDescription | Radio |
| Number of Items | 1 |
| Mfr Part Number | VHF Marine Antenna |
| Number of Channels | 1 |
| Impedance | 50 Ohms |
| Antenna | Radio |
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