Offshore Range from the Coast
The signal from base stations on shore can be used offshore up to approximately 30 km.
MARINE · ROUTER REPEATER
Stella Doradus RouterAMP Marine
A 2G/3G/4G/5G wideband marine router repeater and combiner for cellular routers on boats. High-speed mobile data offshore, up to approximately 30 km from the coast.
What Is RouterAMP Marine?
RouterAMP Marine (RA) is a wideband marine router repeater and combiner that connects directly to the cellular router on boats and yachts. It boosts GSM, 3G, 4G and 5G signals for all operators on the 700, 800, 900, 1800, 2100 and 2600 MHz bands.
It connects the router's radio modules to external omni antennas on the mast through a single system. This boosts the signal that weakens as you move away from the coast and also reduces the number of cables run up the mast.
If coverage is needed for phones in the boat's living spaces, Stella Marine repeater solutions are used. RouterAMP targets the router's data connection.
Key Features
RouterAMP Marine is designed to increase the range and stability of the router connection at sea.
Gain on All Bands
Provides 15 dB gain on all supported cellular bands.
MIMO Support
Compatible with routers with four radio modules. 2× or 4× MIMO is supported on the downlink.
Works with All Operators
Supports GSM, 3G, 4G and 5G technologies and works independently of the operator.
Harbour Mode
In harbour the amplifier is bypassed, so new 5G bands such as 3.4–3.8 GHz reach the router directly.
Remote Monitoring and Management
When connected to the Stella cloud, signal level and gain are monitored live per band, and the device can be configured remotely.
How Does the RouterAMP Marine Router Repeater Work?
The RA is placed between the router and the mast antennas. Uplink and downlink gain are controlled independently of each other.
1
Mast Antennas
External omni antennas mounted on the mast receive the signal from base stations on shore. The antennas connect to the RA with LMR400 cable.
2
Downlink Protection
The downlink signal is boosted to a maximum of –25 dBm. When the boat is close to a base station, the router's sensitive radio modules are protected.
3
Uplink Control
The uplink signal is boosted to a maximum of 27 dBm. If the router transmits a stronger signal, gain is reduced automatically.
4
16 Ports, 4 Radio Modules
With up to 16 port connections, router configurations with up to four radio modules are supported.
5
Bypass Mode
In harbour bypass mode, the approximately 7 dB insertion loss is taken out of the path and data speed is not affected.
6
Mounting
Available with rack (R) or wall-mount (W) options.
Range note: The distance achievable offshore is limited by antenna height, base station location and the radio horizon. For details, see the 4G/5G signal distance at sea page.
RouterAMP Marine Models
Models differ by MIMO configuration and frequency region. EU models are for the EMEA region, WW models for global use.
| Model (SKU) | Region | MIMO | Bands |
|---|---|---|---|
| RA-2X-EU | EMEA | 2× | B28 / B20 / B8 / B3 / B1 / B7 |
| RA-2X-WW | Global | 2× | B28 / B20 / B8 / B3 / B1 / B7 / B5 / B4 / B25 |
| RA-4X-EU | EMEA | 4× | B28 / B20 / B8 / B3 / B1 / B7 |
| RA-4X-WW | Global | 4× | B28 / B20 / B8 / B3 / B1 / B7 / B5 / B4 / B25 |
RA-2X
For 2×2 MIMO router configurations. An R added to the model code indicates rack mounting, W indicates wall mounting.
RA-4X
For 4×4 MIMO router configurations. Preferred on yachts and commercial boats where high speed is expected.
Example System: 4×4 MIMO Marine Router
In the example configuration, the RA-4X works between a router with four radio modules and a 4×4 MIMO omni antenna on the mast.
- Router: Sierra Wireless XR90 (or a similar marine router, e.g. AMIT VHG87B 5G marine router)
- Repeater / combiner: RA-4X-EU-R
- Antenna: 4×4 MIMO marine omni antenna (e.g. Poynting Narwhal series)
- Cable: LMR400
Smart RF Control and Network Protection
The built-in software keeps the system stable and protects the mobile network.
Oscillation Detection
Detects the feedback that occurs when external and internal antennas are too close to each other and reduces gain.
Automatic Gain Control
Adjusts gain according to signal level to prevent overload and interference.
Idle Mode
Reduces unnecessary RF output when there is no traffic.
Base Station Proximity Detection
Lowers the output level as the boat approaches a base station, protecting the network and the router.
Installation: For general rules on antenna isolation, cable losses and uplink control, see the GSM signal booster installation guide.
Datasheet and Stella Doradus Product Family
Download the RouterAMP Marine datasheet and explore other Stella Doradus mobile signal booster and repeater solutions.