Description
Lightweight Fibreglass Marine VHF Antenna for Sailboats, RIBs and Workboats
CELmar4 Marine VHF Antenna from AC Antennas is a lightweight 1.26m fibreglass VHF antenna designed for sailboats, leisure craft, RIBs and workboats. Covering the marine VHF frequency range of 146–162.5 MHz, the CELmar4 provides reliable omnidirectional communications using a robust coaxial dipole design with 0 dBd / 3 Marine dB gain.
Manufactured for demanding marine environments, this compact marine VHF antenna features white fibreglass construction, IP66 protection, a pre-installed 6m RG58 coaxial cable and a standard 1″-14 TPI female ferrule for compatibility with common marine antenna mounts.
- 1.26m lightweight fibreglass marine VHF antenna
- 146–162.5 MHz marine VHF frequency coverage
- 0 dBd gain / 3 Marine dB
- 100W maximum input power
- Omnidirectional radiation pattern
- Pre-installed 6m RG58 coaxial cable
- 1″-14 TPI female ferrule mounting thread
- IP66 marine weather protection
- Suitable for sailboats, yachts, RIBs, leisure craft and workboats
CELmar4 Marine VHF Antenna is a compact AC Antennas VHF antenna built for dependable marine communication where space, mounting height and installation simplicity matter. It is particularly suited to small vessels, sailing boats, RIBs and workboats operating in coastal, harbour and nearshore environments.
CELmar4 Marine VHF Antenna for Compact Boat Installations
The CELmar4 Marine VHF Antenna is designed for installations where a full-size offshore antenna may be unnecessary or impractical. Its 1.26m fibreglass body gives a practical balance between compact size, durability and reliable VHF radio performance.
This makes it suitable for:
- Sailboats and yachts
- Small leisure craft
- RIBs and tenders
- Workboats and harbour craft
- Secondary VHF radio installations
- Space-restricted marine antenna installations
Key Features
- AC Antennas CELmar4 marine and land-based VHF antenna
- 0 dBd / 2.15 dBi / 3 Marine dB gain
- 146.0–162.5 MHz VHF frequency range
- 100W maximum input power
- Omnidirectional radiation pattern
- 1.26m white fibreglass construction
- Pre-installed 6m RG58 coaxial cable
- 1″-14 TPI female ferrule
- IP66 ingress protection
- 200 km/h survival wind speed
- DC shorted and DC grounded design
Technical Specifications
The CELmar4 Marine VHF Antenna combines compact dimensions, durable fibreglass construction and reliable omnidirectional VHF performance for everyday marine communications.
| Manufacturer | AC Antennas |
|---|---|
| Model | CELmar4 |
| Product Number | 100009-P |
| Product Group | VHF |
| Design | Coaxial dipole |
| Pattern | Omnidirectional |
| Frequency Range | 146.0–162.5 MHz |
| Bandwidth | 16.5 MHz |
| Nominal Impedance | 50 Ohm |
| Maximum Input Power | 100W |
| Gain | 0 dBd / 2.15 dBi / 3 Marine dB |
| VSWR | <1.5:1 |
| Polarisation | Vertical |
| DC Shorted | Yes |
| DC Grounded | Yes |
| Cable | 6m / 20ft RG58 cable supplied |
| Length | 1.26m / 4.14ft |
| Sections | 1 |
| Weight | 1.25kg / 2.78lbs |
| Survival Wind Speed | 200 km/h / 55 m/s / 124 mph |
| Wind Area | 0.0193m² / 0.2078ft² |
| Wind Load @ 160km/h | 28N |
| Material | Fibreglass |
| Colour | White |
| Ingress Protection | IP66 |
| Thread | 1″-14 TPI female ferrule |
| Operating Temperature | -55°C to +60°C |
Mounting and Installation
The CELmar4 Marine VHF Antenna is designed for straightforward installation using standard 1″-14 TPI marine antenna mounts and is supplied with a pre-installed 6m RG58 cable.
Suitable mounting options may include mast mounts, rail mounts, deck mounts and ratchet mounts depending on the vessel layout. For best performance, mount the antenna as high and as clear as practical, away from metal obstructions, radar scanners, other antennas and heavy cable bends.
For installation support, see our Marine VHF Antenna Mounting Guide, Marine Antenna Thread Sizes Guide and Marine Antenna Mount Compatibility Guide.
Maximising VHF Communication Range
Like all marine VHF antennas, the CELmar4 performs best when installed with a clear line of sight. Antenna height often has more effect on usable VHF range than antenna gain alone, especially on small boats, RIBs and sailing vessels.
For more detail, read our guides on VHF Antenna Height vs Range and Marine VHF Antenna Range.
Why Choose a 0 dBd VHF Antenna?
A 0 dBd antenna such as the CELmar4 produces a broad, stable radiation pattern. This can be useful on smaller vessels and sailing boats where movement, heel angle and mounting height can affect real-world VHF communication.
For a practical comparison of gain options, see our guide: 3dB vs 6dB Marine VHF Antennas.
Cable and Connection Guidance
The CELmar4 is supplied with a pre-installed 6m RG58 cable. The datasheet does not specify a fitted radio-end connector, so connector requirements should be checked against the vessel’s VHF radio and installation route before fitting.
For longer cable runs or installations with higher cable loss risk, see our Marine VHF Antenna Cable Guide.
Suitable Vessel Applications
The CELmar4 Marine VHF Antenna is a practical choice for vessels where a compact, robust antenna is preferred over a larger long-range fibreglass model. It is especially relevant for smaller craft operating around harbours, estuaries, coastal waters and working marine environments.
- Sailboats requiring a lightweight VHF antenna
- RIBs and tenders with limited mounting space
- Workboats needing a compact communication antenna
- Leisure craft needing reliable coastal VHF communication
- Secondary VHF radio installations
Downloads and Manufacturer Information
Manufacturer datasheet available on request or from AC Antennas product documentation.
Additional manufacturer information is available from AC Antennas.
Related Guides
- Marine VHF Antennas Information
- Marine VHF Antenna Range
- VHF Antenna Height vs Range
- 3dB vs 6dB Marine VHF Antennas
- Marine VHF Antenna Cable Guide
- Marine VHF Antenna Mounting Guide
- Marine Antennas Explained
CELmar4 Marine VHF Antenna FAQs
Who should choose the CELmar4 Marine VHF Antenna?
The CELmar4 Marine VHF Antenna is suitable for boat owners who need a compact, lightweight and durable VHF antenna for sailboats, RIBs, leisure craft or workboats.
Is the CELmar4 suitable for sailboats?
Yes. AC Antennas describes the CELmar4 as a heavy-duty omnidirectional sailboat antenna suitable for harsh marine environments.
What cable is supplied with the CELmar4?
The CELmar4 is supplied with 6m / 20ft of RG58 coaxial cable.
What mount thread does the CELmar4 use?
The antenna uses a standard 1″-14 TPI female ferrule, making it compatible with many marine antenna mounts using the same thread standard.
Is the CELmar4 a high-gain VHF antenna?
No. The CELmar4 is a 0 dBd antenna, equivalent to 3 Marine dB. This gives a broad omnidirectional pattern suitable for smaller vessels and moving marine installations.
Can the CELmar4 be used on RIBs and workboats?
Yes. Its compact 1.26m length, fibreglass construction and pre-installed cable make it suitable for RIBs, leisure craft and workboats where mounting space is limited.
Does antenna height affect VHF range?
Yes. VHF communication is strongly affected by line of sight. Mounting the CELmar4 higher and clear of obstructions will generally improve usable communication range.
The CELmar4 Marine VHF Antenna is an excellent choice for boat owners seeking a compact, lightweight and durable marine VHF antenna for reliable communication at sea.
Related F&C Marine guide
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