Long Range UAV Video, Data & Telemetry Transmission Module | 30Mbps OFDM Wireless Air-to-Ground Data Link
Overview
The Vcan2122 is a professional-grade wireless transmission module designed for UAVs, robotics, autonomous systems, and industrial telemetry applications. Utilizing advanced OFDM TDD communication technology, it provides stable long-range wireless connectivity for video streaming, telemetry, command and control, and IP network transmission.
Featuring dual Ethernet ports, multiple serial interfaces, AES-128 encryption, automatic frequency selection, and low-latency performance, the Vcan2122 delivers reliable communication in complex RF environments where interference resistance and link stability are critical.
The system supports point-to-point, point-to-multipoint, and star-network topologies with up to 16 nodes. Its compact size, lightweight design, and low power consumption make it ideal for UAV integration and other embedded wireless applications.
The standard version operates in the 1420–1530 MHz frequency range with intelligent frequency hopping capabilities across a wide 110 MHz spectrum. Optional single-band versions are also available for specialized deployments.
Under clear line-of-sight conditions, the system supports transmission distances of 10–20 km using standard antennas, while significantly longer distances can be achieved with high-gain antennas and external RF amplifiers.
Key Features
Long-Range Wireless Transmission
Supports reliable air-to-ground communication from 10 km up to 150 km with optional external power amplifiers and high-gain antennas.
High-Speed Data Throughput
Delivers up to 30 Mbps wireless data rate for IP video transmission, telemetry, and network communication.
OFDM Anti-Interference Technology
Advanced OFDM modulation ensures excellent resistance to multipath fading, electromagnetic interference, and challenging RF environments.
Star Network Architecture
Supports one-to-many communication with up to 16 nodes in a single network.
Ultra-Low Latency
End-to-end transmission latency as low as 20 ms for real-time applications.
Intelligent Frequency Management
Automatic channel scanning and frequency selection optimize link performance and minimize interference.
Multiple Interface Support
Integrated interfaces include:
- Dual 100 Mbps Ethernet ports
- 2 × TTL serial ports
- 1 × RS232 port
- 1 × SBUS port
Secure Communication
AES-128 encryption protects data transmission from unauthorized access.
Lightweight Design
Compact 35 g module optimized for UAV and mobile platforms.
Web-Based Configuration
Built-in Web UI allows users to configure all parameters through a browser without using AT commands.
Specifications
Technical Specifications
| Item | Specification |
|---|---|
| Model | KM2122 |
| Communication Technology | OFDM TDD |
| RF Architecture | 1T2R |
| Operating Frequency | 1420–1530 MHz (Standard) |
| Optional Bands | 806–825.9 MHz / 1427.9–1467.9 MHz / 2401.5–2481.4 MHz |
| RF Output Power | 25 dBm (300 mW) |
| Channel Bandwidth | 3 / 5 / 10 / 20 MHz |
| Maximum Data Rate | 30 Mbps |
| Transmission Distance | 10–20 km LOS (Expandable) |
| Encryption | AES-128 |
| End-to-End Latency | ≤20 ms |
| Ethernet Ports | 2 × 100 Mbps |
| Serial Ports | 2 × TTL, 1 × RS232, 1 × SBUS |
| Antenna Connectors | 2 × IPEX |
| Power Supply | DC 9–15 V |
| Typical Power Consumption | ≤5 W |
| Dimensions | 73 × 59 × 10 mm |
| Weight | 35 g |
| Operating Temperature | -20°C to +55°C |
Receiver Sensitivity
| Bandwidth | Data Rate | Sensitivity |
|---|---|---|
| 20 MHz | 10 Mbps | -94 dBm |
| 20 MHz | 5 Mbps | -97 dBm |
| 10 MHz | 10 Mbps | -91 dBm |
| 10 MHz | 5 Mbps | -96 dBm |
| 5 MHz | 10 Mbps | -84 dBm |
| 5 MHz | 5 Mbps | -93 dBm |
| 3 MHz | 5 Mbps | -87 dBm |
| 3 MHz | 2 Mbps | -98 dBm |
Connectors & Interfaces
RF Interfaces
Main Antenna
- TX and RX communication
- Must be connected during operation
Auxiliary Antenna
- Receive diversity only
- Improves reception reliability
- Enhances anti-fading performance
Power Input
| Pin | Description |
|---|---|
| VCC | DC 9–15V |
| GND | Ground |
Ethernet Interfaces
- Ethernet Port 1 (100 Mbps)
- Ethernet Port 2 (100 Mbps)
Suitable for:
- IP Cameras
- Ground Control Stations
- NVR Systems
- Industrial Ethernet Devices
Serial Interfaces
| Interface | Quantity |
|---|---|
| TTL | 2 |
| RS232 | 1 |
| SBUS | 1 |
Optional interface conversion:
- TTL to RS422
- RS232 to RS485
- PTZ Camera Control Support
Typical Applications
UAV Video & Telemetry Links
Real-time HD video transmission, flight telemetry, command and control.
Drone Remote Inspection
Power line inspection, pipeline monitoring, railway inspection, and infrastructure surveillance.
Robotics & UGV Communication
Reliable wireless networking for unmanned ground vehicles and robotic systems.
Emergency Response Networks
Temporary wireless communication deployment for disaster relief and rescue operations.
Public Safety & Law Enforcement
Mobile surveillance and secure field communications.
Industrial Monitoring
Wireless sensor networks, SCADA systems, environmental monitoring, and remote data collection.
Smart Agriculture
Agricultural UAVs, autonomous machinery, and remote monitoring systems.
FAQ
Does the Vcan2122 support video transmission?
Yes. The module transparently transmits Ethernet data. IP cameras, video encoders, NVRs, and video servers can be connected directly through the Ethernet ports.
What transmission distance can be achieved?
Typical air-to-ground LOS distance is 10–20 km. With high-gain antennas and external RF amplifiers, distances exceeding 100 km are achievable under optimal conditions.
Does it support mesh networking?
The standard Vcan2122 supports point-to-point, point-to-multipoint, and star networking. For MANET/IP Mesh applications, we recommend our CX6702 series solutions.
How many devices can operate in one network?
Up to 16 nodes can be supported within a single star network topology.
Is frequency hopping supported?
Yes. The wideband version supports automatic frequency selection and frequency hopping within the available spectrum.
What is the typical latency?
The typical end-to-end latency is less than 20 milliseconds.
Is communication encrypted?
Yes. AES-128 encryption is built into the system to secure wireless communication.
Why are two antennas used?
The module uses a 1T2R architecture:
- Main antenna: transmit and receive
- Auxiliary antenna: receive diversity
This significantly improves signal stability and resistance to fading.
Customized Optional Functions
Available Customization Services
Frequency Customization
- 400 MHz
- 700 MHz
- 800 MHz
- 900 MHz
- 1.4 GHz
- 2.4 GHz
Interface Customization
- RS422
- RS485
- CAN Bus
- Additional TTL ports
- USB Interface
RF Power Upgrade
- 2W External PA
- 5W External PA
- 10W External PA
Networking Customization
- Point-to-Point
- Point-to-Multipoint
- Star Network
- IP Mesh MANET
Firmware Customization
- Custom protocol integration
- Private encryption schemes
- API development support
- OEM/ODM branding
Industrial Version
- Extended temperature range
- Rugged enclosure
- Waterproof housing
- Military-grade connectors