Seamless Connectivity at Sea: Global CPE Solution for Large Cruise Ships and Naval Vessels
| Material: | Weather-resistant ABS Engineering Plastic | Maximum N28 700M communication distance: | 120 Km |
| Antenna gain: | High Gain Optimized For The N28 700MHz Band | RF link gain: | UL/DL ≥70 DB |
| Device Output Power: | 17±2dBm | Wifi Contronal: | Done |
| All-network support: | Supported (5G + 4G All-network) | GNSS positioning: | BeiDou/GPS (B1/L1) Positioning Accuracy Better Than 5 M |
| Network port: | 1 Gigabit Ethernet Port (RJ45, Can Connect An External Wireless Router) | Installation method: | Ship-mounted Pole Installation |
| Maximum equivalent transmit power: | Spectrum Analyzer 26 DBm +2/-3 DB (Class 2) Spectrum Analyzer | MIMO mode: | Spectrum Analyzer / Comprehensive Tester 4×4 MIMO Spectrum Analyzer / Comprehensive Tester |
| Fasteners: | M4×8 Stainless Steel Screws (304 Material) + Spring Washers | ||
| High Light: | Global CPE for cruise ships,5G signal booster for naval vessels,Maritime 5G CPE solution |
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The ATNJ 5G Cloud Box is a purpose-built Integrated Maritime 5G CPE Terminal that extends high-speed, stable 5G coverage from the coastline out to the high seas. Designed for fishing vessels, aquaculture platforms, patrol boats and offshore engineering facilities, the solution turns the "information island" of offshore operations into a fully connected smart ocean.



| Item | Model A | Model B | Remarks |
|---|---|---|---|
| Maximum N28 700M communication distance | 80 km (45 nautical miles) | 120 km (67.5 nautical miles) | Depends on the specific environment |
| Minimum N28 700M communication distance | ≥50 km | ≥50 km | -- |
| N28 700M MIMO | 2*2 MIMO | 4*4 MIMO | -- |
| Maximum N28 700M equivalent transmit power | 23 dBm +2/-2.5 dB (Class 3) | 26 dBm +2/-3 dB (Class 2) | -- |
| GNSS positioning | -- | BeiDou/GPS (B1/L1) | Positioning accuracy better than 5 m |
| Dual-SIM backup | Supported | Supported | Automatic switchover in ≤3 s when the primary SIM is disconnected |
| Remote network management | Supported | Supported | Linux OpenWrt system |
| Trajectory tracking | -- | Supported | Position reporting, real-time back-end supervision |
| Parameter | Value |
|---|---|
| 5G TDD bands | N38 / N40 / N41 / N77 / N78 / N79 |
| 5G FDD bands | N1 / N3 / N7 / N8 / N20 / N28 / N71 |
| 4G LTE bands | B1 / B3 / B5 / B7 / B8 / B20 / B28 / B34 / B38 / B39 / B40 / B41 |
| All-network support | Supported (5G + 4G all-network) |
| SIM card slots | 2 standard SIM card slots, dual-SIM backup supported |
| Antenna type | Omnidirectional high-gain antenna optimized for the N28 700M band |
| WiFi standard | WiFi 6, 5G band preferred, IEEE 802.11b/g/n/ac/ax (802.11ax) |
| WiFi bands | 2.4 GHz / 5 GHz dual-band |
| Network port | 1 gigabit Ethernet port (RJ45, can connect an external wireless router) |
| Installation method | Ship-mounted pole installation |
| Parameter | Value |
|---|---|
| Operating temperature | -35°C to +75°C (-31°F to +167°F) |
| Storage temperature | -40°C to +85°C |
| Atmospheric pressure | 86 kPa to 106 kPa |
| Protection rating | IP66 (dust-proof and protected against powerful water jets) |
| Relative humidity | ≤85% (non-condensing) |
| Vibration resistance | Simulated shipboard vibration (10-150 Hz, 2 g) with no structural loosening |
| Salt spray test | Complies with IEC 60945 salt spray corrosion requirements for maritime equipment |
| Parameter | Value |
|---|---|
| Dimensions | 320 mm * 750 mm (diameter * height) |
| Total weight (net weight) | 10 kg |
| Exterior material | Weather-resistant ABS engineering plastic |
| Enclosure color | White |
| LED indicators | PWR power indicator, 5G status indicator, WiFi status indicator |
| Sealing material | Weather-resistant silicone rubber sealing ring + waterproof sealant |
| Fasteners | M4*8 stainless steel screws (304 material) + spring washers |
| MTBF (mean time between failures) | ≥70,000 hours |
| Test Item | Test Conditions / Method | Acceptance Criteria | Test Instrument |
|---|---|---|---|
| Maximum N28 700M communication distance | Link budget calculation / field verification | 120 km | Link analyzer |
| Minimum N28 700M communication distance | Field measurement | ≥50 km | Link analyzer |
| MIMO mode | Spectrum analyzer / comprehensive tester | 4*4 MIMO | Spectrum analyzer / comprehensive tester |
| Maximum equivalent transmit power | Spectrum analyzer | 26 dBm +2/-3 dB (Class 2) | Spectrum analyzer |
| Antenna gain | Anechoic chamber / network analyzer | High gain optimized for the N28 700M band | Anechoic chamber / network analyzer |
| Receiver sensitivity | Signal generator + bit error rate tester | Complies with the 3GPP Class 2 standard | Signal generator + bit error rate tester |
| RF link gain | Downlink / uplink | ≥70 dB | Comprehensive tester |
| Parameter | Value |
|---|---|
| Satellite system | BeiDou (B1) + GPS (L1) dual-mode |
| Positioning accuracy | CEP better than 5 m (static, 24 hours) |
| Cold start time | ≤45 s |
| Hot start time | ≤5 s |
| Position reporting | Supports remote configuration of reporting parameters |
| Trajectory tracking | Supports real-time trajectory playback in the back end |
- Full-Band, All-Network 4G/5G Communication — Supports the full 5G TDD/FDD and 4G LTE bands, with 2 standard SIM card slots and dual-SIM backup to ensure high availability of the communication link.
- Deep Optimization for the N28 700M Band — Specially optimized for remote 5G communication in the N28 700M band, supporting 4*4 MIMO with a maximum equivalent transmit power of 26 dBm (Class 2) for longer communication distances and higher communication rates.
- Ultra-Long Maritime Communication Distance — The N28 700M band enables offshore internet access at distances of more than 80 km from land (depending on the specific environment).
- Dual-Mode GNSS Positioning — Supports BeiDou/GPS (B1/L1) dual-mode positioning with an accuracy better than 5 m, and supports position reporting and back-end trajectory tracking.
- Omnidirectional High-Gain Antenna — An omnidirectional high-gain antenna optimized for the N28 700M band enhances reception and improves uplink and downlink rates.
- Industrial-Grade Protection Design — Fully industrialized design with an IP65 protection rating, able to withstand harsh maritime environments (-35°C to +75°C).
- Integrated Plug-In Design — Integrated product design with a plug-in structure for easy later maintenance and module replacement.
- Simple Installation — Plug-and-play with quick commissioning and no professional training required. Supports ship-mounted pole installation.
- WiFi 6 Wireless Network — Converts the 5G network into a WiFi 6 network (IEEE 802.11ax), solving the problem of being unable to access the internet caused by terminal standards or poor signal reception.
- Wired Broadband Extension — Converts the 5G network into wired broadband, and supports external switches, wireless APs, cameras, laptops and other devices.
- Remote Network Management and Secondary Development — Supports remote network management configuration and upgrades, and supports the Linux OpenWrt system for user secondary development.
- Remote Device Supervision — Reporting parameters can be configured locally or remotely, and the back end monitors devices in real time for one-click viewing and efficient, convenient maintenance.
- Extra-Long Service Life — MTBF ≥ 70,000 hours, meeting the needs of long-cycle maritime operation.


Shenzhen ATNJ Communication Technology Co., Ltd. is a leading high-tech enterprise specializing in the R&D, manufacturing, and distribution of professional tele communication equipment. As an experienced OEM and ODM RF partner, we are dedicated to providing high-performance wireless coverage solutions tailored to meet the evolving needs of the global telecommunications industry.
Our unwavering commitment to quality and innovation is reflected in our comprehensive product portfolio:
1. Active DAS & Signal Coverage Solutions
We provide advanced active systems to ensure seamless connectivity in complex environments:
Digital Repeaters & Frequency Shift Repeaters
VHF / TETRA Repeaters (for mission-critical communications)
Fiber Optic Repeaters & Inline Boosters
2. RF Modules & Components (In-Cabinet)
High-precision components designed for seamless integration:
Active RF Modules: LNA (Low Noise Amplifiers), PA (Power Amplifiers), Optical Transceivers, Channel/Band Selectors, Frequency Shifters, Bias Tees, and PSUs.
Passive RF Modules: Multiplexers, Cavity Filters, Channel Combiners, and high-quality Semi-rigid/Flexible Jumpers.
3. Passive DAS & Connectivity Infrastructure
A full suite of passive hardware for robust signal distribution:
POI (Point of Interface) & Multi-band / Hybrid Combiners
Distribution Components: Splitters, Couplers, Tappers, and Cable Assemblies.
Antennas: A wide range of indoor and outdoor antenna solutions.
4. Advanced Technologies & Specialized Solutions
Staying at the forefront of wireless innovation:
SDR (Software Defined Radio) Core Board Solutions.
Phased Array Radar Technology and advanced software algorithms.
Critical Communications: Public Safety BDA (Bi-Directional Amplifier) solutions to ensure emergency network reliability.
Why Choose ATNJ?
With a focus on Professionalism, Reliability, and Customization, ATNJ empowers clients worldwide with cutting-edge wireless infrastructure. Whether you require standard products or a fully customized ODM solution, our engineering team is ready to turn your requirements into reality.
