Best Drone Radio Transmitter and Receiver Module for video data telemetry

Table of Contents
Overview
The Vcan2122 is a compact, medium-power bidirectional wireless data transmission module designed for reliable long-range communication in complex and interference-prone environments. Based on OFDM TDD wireless communication technology, it delivers strong anti-interference capability, excellent penetration performance, and highly stable data transmission.
The module supports multiple transmission modes, including point-to-point, point-to-multipoint, and trunk communication, and enables star network topologies with up to 16 nodes in a single network. Thanks to its miniaturized design, low power consumption, and multiple data interfaces, Vcan2122 is well suited for mobile, airborne, and embedded applications where reliability and flexibility are critical.
The Vcan2122 is by default available in a wideband configuration, operating over a frequency range of 1420–1530 MHz. Within this single continuous band, the module provides up to 110 MHz of selectable frequency range, enabling automatic frequency hopping with significantly greater flexibility to avoid interference and maintain stable links in complex RF environments.
In addition to the wideband version, optional single-band variants are also available in the following frequency ranges: 806–825.9 MHz, 1427.9–1467.9 MHz, 2401.5–2481.4 MHz. Each optional variant supports single-band operation only.
Under good line-of-sight (LOS) air-to-ground conditions, the transmission distance can reach 10-20 km or more, depending on high gain antenna configuration and external power amplifier support.
Features
-
Star Networking Capability
Supports point-to-multipoint communication with up to 16 nodes. -
High Bandwidth Transmission
Maximum data rate up to 30 Mbps @ 20 MHz. -
Flexible Channel Bandwidth
Supports 3 / 5 / 10 / 20 MHz bandwidth modes. -
Automatic Frequency Selection
Automatically detects interference and selects the optimal frequency point in real time. -
Multi-System Coexistence
Multiple Vcan2122 systems can operate simultaneously on fixed frequencies. -
Multiple Data Interfaces
Integrated dual 100 Mbps Ethernet ports and TTL / RS232 / SBUS serial interfaces. -
Low Latency
End-to-end transmission delay ≤ 20 ms. -
Secure Communication
Supports AES-128 encryption. -
Compact & Lightweight Design
Only 35 g, suitable for UAVs and other weight-sensitive platforms. - Web UI page to configuration the parameter.
Provide a user-friendly web UI for configuring module parameters. Users can easily manage settings and modify parameters visually through the web page, without the need for complex AT commands or command-line instructions.
Specifications
System Parameters
| Item | Specification |
|---|---|
| Model | Vcan2122 |
| Operating Frequency | 1420-1530MHz (default and recommended)
or The user can freely select one of the three available frequency bands for operation. 806–825.9 MHz / 1427.9–1467.9 MHz / 2401.5–2481.4 MHz |
| RF Channel | 1T2R |
| Output Power | 25 dBm (0.3 W) |
| Modulation | OFDM |
| Channel Bandwidth | 3 / 5 / 10 / 20 MHz |
| Maximum Data Rate | 30 Mbps @ 20 MHz |
| Transmission Distance | ≥10 km (Air-to-Ground, LOS) |
| Receiving Sensitivity | Refer to the table below of Channel Bandwidth & Sensitivity |
| Encryption | AES-128 |
| Transmission Delay | ≤20 ms |
| RF Interface | IPEX ×2 (Main + AUX) |
| Ethernet Interface | 100 Mbps ×2 |
| Serial Interfaces | TTL ×2, RS232 ×1, SBUS ×1 |
| Power Consumption | ≤5 W (Air @ 4 Mbps), ≤5 W (Ground) |
| Input Voltage | DC 9–15 V (Typical: 12 V @ 1 A) |
| Dimensions | 73 × 59 × 10 mm |
| Weight | 35 g |
| Operating Temperature | -20 ℃ to +55 ℃ |
Channel Bandwidth & Sensitivity
| Channel BW | 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 |
Interfaces
-
Power Interface: XT30, DC 9–15 V
-
Antenna Interface: IPEX ×2
-
MAIN: Must be connected
-
AUX: Receive diversity only
-
-
Data Interfaces:
-
Ethernet: 100 Mbps ×2
-
Serial: TTL ×2, RS232 ×1, SBUS ×1
-
Interface definition

| Linear order | Pin name | Interface definition | Interface description | Signal direction |
| 1 | TXP1+ |
Ethernet 1
|
TX+ | O |
| TXM1- | TX- | O | ||
| RXP1+ | RX+ | I | ||
| RXM1- | RX- | I | ||
| 2 | TXP2+ |
Ethernet 2 |
TX+ | O |
| TXM2- | TX- | O | ||
| RXP2+ | RX+ | I | ||
| RXM2- | RX- | I | ||
| 3 | TX1 | Serial port 1
TTL |
TX | O |
| RX1 | RX | I | ||
| GND | ground | O | ||
| 4 | TX2 | Serial port 2
TTL |
TX | O |
| RX2 | RX | I | ||
| GND | ground | O | ||
| 5 | TX3 | Serial port 3
RS232 |
TX | O |
| RX3 | RX | I | ||
| GND | ground | O | ||
| 6 | TX4 | Serial port 4
SBUS |
SBUS-OUT | O |
| RX4 | SBUS-IN | I | ||
| GND | ground | O | ||
| 7 | PWR | DC 9~15V
|
Power positive | I |
| GND | Power negative | I |
We can also convert one TTL port to RS422, and additionally, we can add an RS232-to-RS485 converter board to support RS485, which is commonly used for camera PTZ control.
Status Indicators
-
PWR (Green)
ON indicates the device is powered. -
MODE (Red / Green)
-
Red ON: Master mode (Grount Unit, Receiver)
-
Green ON: Slave mode (Air Unit, Transmitter)
-
-
LAN1 / LAN2 (Green)
Blinks when Ethernet data is transmitted or received. -
RSSI 1–3 (Green)
Indicates received signal quality:-
3 LEDs ON: SNR > 14
-
2 LEDs ON: 10 < SNR < 14
-
1 LED ON: 2 < SNR < 10
-

|
Module type |
Mode | light status | |||
| PWR | MODE | LAN1 LAN2 |
RSSI 123 |
||
| master | unsynchronized | Powered on | red light Powered on | Data is being transmitted and blinking | Searching |
| master | synchronized | Powered on | green light Powered on | Data is being transmitted and blinking | Proportional to the strength of the received signal |
| slave | unsynchronized | Powered on | red light Powered on | Data is being transmitted and blinking | Searching |
| slave | synchronized | Powered on | green light Powered on | Data is being transmitted and blinking | Proportional to the strength of the received signal |
When the primary (Master, Ground Unit, Receiver) and secondary devices (Salve, Air Unit, Transmitter) are not synchronized, the PWR (power) indicators on both devices remain steadily lit. The MODE indicator is red on the primary device and green on the secondary device. At this time, the RSSI lights on both devices are in a searching state.
Once the master and slave devices are synchronized, the RSSI lights display the received signal strength for each device. When data is being sent or received over the network, the LAN1 indicators on both devices light up, while the LAN2 indicators blink to indicate network activity.
Applications
The Vcan2122 is suitable for a wide range of professional wireless data transmission applications, including:
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UAV / Drone Data Links
-
Firefighting & Emergency Communication
-
Public Security & Law Enforcement
-
Inspection & Monitoring Systems
-
Robotics & UGVs
-
Temporary Wireless Networks
-
Industrial and Environmental Monitoring
FAQ
Q: What are the main and secondary antennas used for in a 1T2R UAV video data module?
A: This module adopts a 1T2R (1 Transmit, 2 Receive) architecture.
- Main antenna (Primary RF path):
Responsible for both transmission (TX) and reception (RX).
It is connected through a T/R (Transmit/Receive) switch, which routes the RF path either to the power amplifier during transmission or to the receiver chain during reception. - Secondary antenna (Diversity receive path):
Used only for reception (RX only).
It improves link reliability by providing spatial diversity, helping mitigate:- Multipath fading
- Signal blockage (e.g., drone body shadowing)
- Orientation-dependent signal loss
Overall, the dual-receive design significantly improves link stability and robustness in mobile UAV scenarios.
Q: Can I modify the RF front-end by adding an up/down converter, PA, and LNA, and convert the system into a 1T1R architecture?
A: In theory, adding an external frequency conversion stage (up/down conversion) plus PA (Power Amplifier) and LNA (Low Noise Amplifier) can be implemented as part of a custom RF front-end. However, converting a 1T2R system into 1T1R is generally not recommended for UAV video links. Key impacts of switching to 1T1R:
- Reduced receiver sensitivity: Typically degraded by ~3–5 dB, due to the loss of spatial diversity gain.
-
Lower link robustness in motion: UAV environments involve: Rapid movement / Orientation changes / Multipath fading, A single receive chain (1T1R) is more vulnerable to intermittent signal drops.
- Weaker anti-interference and fading resistance: Without dual receive antennas, the system loses diversity combining benefits.
Q: What is the maximum OFDM Peak-to-Average Power Ratio (PAPR) of this wireless video/data telemetry module?
A: The maximum OFDM PAPR of this module is typically: 11.5 dB. When designing an external RF front-end (such as PA, LNA, or frequency converter), sufficient PA back-off and linearity margin should be reserved to avoid signal distortion and spectrum degradation.
Q: Does Vcan2122 support video transmission?
Vcan2122 is a wireless data transmission module. Video transmission depends on external IP cameras or video encoders connected via Ethernet.
Q: Can this module support IP MESH MANET functionality?
No, default module is star networking type. If you need, we also can do IP MESH MANET (Mobile Ad Hoc Network) fucntion (use CX6702, CX6702 module). Currently, we provide it as a finished product rather than as a standalone development module. Please refer to the product image below for your reference. (CX6779-L4H2)

Q: Can multiple Vcan2122 systems operate in the same area?
Yes. Fixed-frequency operation allows multiple systems to coexist with minimal interference.
Q: Does one unit support multiple frequency bands?
No. Each Vcan2122 unit supports one single frequency band only.
Q: Is diversity reception supported?
Yes. The AUX antenna provides receive diversity to improve link reliability.
Q: What is the typical latency?
The typical end-to-end transmission delay is ≤20 ms.
Introduction
The Vcan2122 is the latest drone transmitter and receiver module designed for UAV video, data, and telemetry transmission.
It features two 100 Mbps Ethernet ports for connecting IP cameras, ground station computers, or NVRs. Additionally, it provides four serial data ports, configurable as:
-
Two TTL ports for connecting a drone’s flight controller
-
One SBus port for connecting a drone remote controller
-
One RS232 port for other devices
-
Alternatively, one port can be configured as a third TTL port
The module includes a built-in 300 mW amplifier, and for extended transmission distances, an external amplifier (2 W, 5 W, or 10 W) can be used.
Designed for drone enthusiasts, manufacturers, engineers, and researchers, the Vcan2122 supports a wide operating frequency range of 1420–1530 MHz with an optional 110 MHz bandwidth, allowing automatic frequency selection to avoid interference and maintain strong signal quality.
It supports transmission distances from 10 km up to 150 km. For long-range applications or environments with severe electromagnetic interference, an external power amplifier is recommended.
All module parameters can be easily configured through a user-friendly Web UI, providing visual management of settings without the need for complex AT commands.



iVcan.com –
I recently started using the Best Drone Radio Transmitter and Receiver Module for video, data, and telemetry, and I’m very impressed with its performance. The dual Ethernet ports make it easy to connect with IP cameras and ground station computers, while the multiple serial ports give me flexibility for flight controllers and other devices. The built-in 300mW amplifier provides stable transmission, and with an external amplifier, I can extend the range even further, making it suitable for both short and ultra-long-distance missions. I especially like that it can automatically switch frequencies to reduce interference, ensuring reliable and clear signal transmission. This module is an excellent choice for drone enthusiasts, engineers, and researchers who need a professional, high-performance wireless link.