Description
CELmar0T Tunable Marine VHF Antenna
CELmar0T Tunable Marine VHF Antenna from AC Antennas is a professional stainless steel whip antenna for marine, commercial and land-based VHF communication systems requiring adjustable frequency capability across 141–179 MHz.
CELmar0T Tunable Marine VHF Antenna for Marine & Land-Based Communications
The CELmar0T Tunable Marine VHF Antenna is designed for installations where a standard fixed marine VHF antenna is not flexible enough. Its centre frequency can be adjusted with Fc ±3% within 141–179 MHz, making it suitable for commercial vessels, workboats, harbour systems, private VHF networks and land-based communication sites.
Manufactured from stainless steel with a steel grey finish, the CELmar0T combines compact dimensions, omnidirectional performance and IP66 protection for demanding marine and outdoor environments. The antenna uses a UHF female connector and a 5/8″-24 TPI male mounting thread. No mount is included.
Tunable 141–179 MHz
Centre frequency adjustable with Fc ±3% tuning.
1.21m Stainless Steel
Compact whip antenna for marine and land-based systems.
0 dBd Gain
3 Marine dB omnidirectional VHF performance.
100W Rated
Suitable for professional VHF Tx/Rx installations.
UHF Female
Connector fitted at the antenna base.
5/8″-24 TPI
Male mounting thread. No mount included.
IP66 Protection
Weather-resistant construction for exposed installations.
200 km/h Wind Survival
Built for demanding marine environments.
Why Choose the CELmar0T?
The CELmar0T Tunable Marine VHF Antenna offers frequency flexibility that standard fixed marine VHF antennas do not provide. It is a practical choice for commercial radio systems, port authority communications, workboat fleets and specialist VHF installations operating across selected frequencies within the 141–179 MHz range.
Suitable Applications
- Commercial vessels and workboats
- Harbour and marina radio systems
- Port authority communications
- Private VHF radio networks
- Utility and infrastructure operators
- Marine service vessels
- Land-based VHF installations
- Custom frequency VHF systems
Technical Specifications
| Manufacturer | AC Antennas |
|---|---|
| Model | CELmar0T |
| Part Number | 100056-P |
| Product Group | VHF |
| Design | Whip |
| Pattern | Omnidirectional |
| Frequency Range A | 141–174 MHz |
| Frequency Range B | 146–162.5 MHz |
| Frequency Range C | 160–164 MHz |
| Tuning Range | Fc ±3% within 141–179 MHz |
| Nominal Impedance | 50 Ohm |
| Maximum Input Power | 100W |
| Gain | 0 dBd / 2.15 dBi / 3 Marine dB |
| VSWR | A: N/A / B: <1.5:1 / C: <1.8:1 |
| Polarisation | Vertical |
| DC Shorted | No |
| DC Grounded | Yes |
| Connector | UHF Female |
| Length | 1.21m / 4.00ft |
| Sections | 1 |
| Weight | 0.15kg / 0.33lbs |
| Survival Wind Speed | 200 km/h / 55 m/s / 124 mph |
| Wind Area | 0.0028m² / 0.0302ft² |
| Wind Load @ 160km/h | 4N |
| Material | Stainless Steel |
| Colour | Steel Grey |
| Operating Temperature | -55°C to +60°C |
| Ingress Protection | IP66 |
| Thread | 5/8″-24 TPI male |
| Mounting | No mount included |
Installation Information
The CELmar0T uses a 5/8″-24 TPI male thread and is supplied without a mounting bracket. The installer should select a suitable mount for the vessel, rail, mast, bracket or land-based installation.
For best performance, install the antenna as high and as clear as practical. Keep it away from radar scanners, large metal structures, other transmitting antennas and sharp cable bends where possible.
For more installation support, see our Marine VHF Antenna Mounting Guide, Marine Antenna Thread Sizes Guide and Marine Antenna Mount Compatibility Guide.
Tunable VHF Antenna Advantages
A tunable VHF antenna allows the installer to optimise the antenna around a selected centre frequency. This can be useful for commercial marine users, harbour operators and land-based radio systems that need reliable performance outside a single fixed-frequency antenna design.
The CELmar0T Tunable Marine VHF Antenna is especially useful where installation requirements need to support specific operational frequencies within the wider 141–179 MHz range.
VHF Antenna Height and Range
Like all VHF antennas, real-world range depends heavily on antenna height, line of sight and installation quality. Mounting the CELmar0T as high and as clear as possible will normally improve communication range and reliability.
For more detail, read our guides on VHF Antenna Height vs Range and Marine VHF Antenna Range.
Cable and Connector Guidance
The CELmar0T is fitted with a UHF female connector. Coaxial cable is not listed as supplied with this model, so cable type and connector selection should be matched to the VHF radio, mounting location and cable run length.
For cable selection guidance, see our Marine VHF Antenna Cable Guide.
Downloads & Manufacturer Information
Download CELmar0T Datasheet (PDF)
The CELmar0T Tunable Marine VHF Antenna is manufactured by AC Antennas, a specialist manufacturer of marine, commercial and land-based antenna systems.
For additional technical information and manufacturer resources, visit the AC Antennas website.
Related AC Antennas Products
- CELmar0 Marine VHF Antenna
- CELmar1-1 Marine & Land VHF Antenna
- CELmar2-1 Marine VHF Antenna
- CELmar3-1 Marine VHF Antenna
- CELmar4 Marine VHF Antenna
Helpful VHF Installation 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
CELmar0T Tunable Marine VHF Antenna FAQs
What makes the CELmar0T different from the standard CELmar0?
The CELmar0T is tunable, allowing centre frequency adjustment with Fc ±3% within 141–179 MHz. The standard CELmar0 is a fixed marine VHF stainless steel whip antenna.
What frequency range does the CELmar0T cover?
The CELmar0T supports centre frequency tuning within the wider 141–179 MHz range, with specified operating ranges of 141–174 MHz, 146–162.5 MHz and 160–164 MHz.
Is the CELmar0T suitable for marine use?
Yes. The antenna is designed for marine and land-based installations and uses stainless steel construction with IP66 protection.
Does the CELmar0T include a mounting bracket?
No. The antenna is supplied without a mount and uses a 5/8″-24 TPI male mounting thread.
What connector does the CELmar0T use?
The CELmar0T uses a UHF female connector.
Is the CELmar0T suitable for commercial VHF systems?
Yes. Its tunable design makes it suitable for commercial marine users, workboats, harbour systems, utility networks and land-based VHF communication systems.
The CELmar0T Tunable Marine VHF Antenna is a strong option where a compact stainless steel whip antenna with adjustable VHF frequency capability is required.
Related F&C Marine guide
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