Drone Link for long-range Video Data Radio Telemetry
Wireless transmission between UAV and Ground Control Station
Table of Contents
Introduction
- This drone link is an FPGA TDD wireless transmission equipment. (TDD: Time-division Duplex)
- It can
- Real-time interference detection
- Adaptive frequency selection (FHSS),
- Adaptive stream (upstream and downstream automatic distribution),
- Automatic retransmission,
- Automatic power control.
- It greatly improves the ability of anti-multipath and anti-interference and has the characteristics of high reliability, good stability, and low delay.
- This product is suitable for long-range drone, firefighting, inspection, monitoring, and other scenarios, a transmission distance of 60KM+ when the environment is good.
- The two data ports can be made as TTL, RS232, UART, SBUS, RS485, or CAN.
Feature
- It supports automatic power control: Close-range automatic transmission power change reduces power consumption.
- Supports automatic antenna selection: According to the occlusion situation, the optimal antenna transmission is selected in real-time.
- Supports upstream and downstream dynamic allocation: The bandwidth ratio of the master and slave can be automatically allocated according to the actual amount of data.
Long-Range Transmission
The VCAN1933 supports long-range transmission with a 4Mbps code stream. Under line-of-sight conditions, it can transmit over 30 km up to 200km using a directional antenna. This long-range capability requires support from a power amplifier.
Large Bandwidth Transmission
The VCAN1933 has a maximum bandwidth of 17Mbps when using a 10MHz channel. This high throughput allows for efficient data transfer over long distances.
Customizable Working Frequencies
The default working frequency range for the VCAN1933 is 1350-1470MHz. However, the device can be customized to operate on other frequencies upon request. Some of the custom frequencies already made for clients include:
- 2.1~2.3GHz (2100~2300MHz)
- 1.7~1.9GHz (1700~1900MHz)
- 5.7GHz (5700MHz)
- Dual frequency (600MHz downlink + 1400MHz uplink)
Multi-Interface Design
The VCAN1933 features a versatile interface design, including:
- 2 RJ45 Ethernet for IP camera gimbal or connecting to the computer.
- 3 serial Data ports: RS232, RS422, and TTL
This allows for flexible connectivity options when deploying the micro base station.
Automatic Frequency Selection (FHSS)
The VCAN1933 employs an automatic frequency hopping spread spectrum (FHSS) technique. It automatically detects interference signals and selects the optimal frequency point in real time. This helps maintain reliable communication links.
Automatic Retransmission
The micro base station supports automatic retransmission of burst error data. This improves overall data reliability by ensuring that corrupted packets are present.
Adaptive Modulation
The VCAN1933 automatically adjusts the channel modulation mode based on real-time signal quality. This adaptive modulation allows for optimal performance under varying conditions.
Automatic Power Control
The VCAN1933 features automatic transmission power control. It can automatically reduce the power at close range to conserve energy. This helps extend the operational life of the system.
Automatic Antenna Selection
The VCAN1933 selects the optimal antenna for transmission based on real-time occlusion conditions. This ensures that the best antenna is used to maintain the link quality.
Dynamic Bandwidth Allocation
The VCAN1933 supports dynamic allocation of bandwidth between the master and slave units. The ratio can be automatically adjusted based on the actual data requirements, ensuring efficient utilization of the available bandwidth.
Default full set of accessories
FAQ
Q: We need a 50km distance MiMo FHSS capable of working at 0.8 Mach speed, do you have such modems?
A: Our model supports to selection of the frequency automatically, and it cannot convey such a fast speed at 0.8 Mach. It should be below 0.7 Mach, which is estimated to be 200m/s.
Q: Can you give me the answer to the below question list?
1. Recovery after link loss in milliseconds
After the link is unlocked, it will normally recover within 3S. If there is no signal at a long distance, the time will be longer.
2. Receiver sensitivity: -99
3. Operating current: 24V: Air unit < 2A; Ground unit < 0.5A.
4. Video channels
1-2 IP camera is better.
Just like 2-5 computers share one net cable to transfer data, the more data the net speed will be slow.
5. Body type: Heat dissipation aluminum
6. Compatible with Pixhawk?
The serial port is in transparent transmission mode, so it can transparently transmit Pixhawk data. Please ensure the interface definition is the same.
7. TX ON-OFF capability?
What is the TX switch function? Can the signal transmission be turned off in the software? There is no such switch. The slave node will not send signals when it is not synchronized.
8. Working temperature: -40 degrees Celsius to 75 degrees Celsius
As a drone video and data link designed for operations beyond visual range (BVLOS), it is essential not only to download stable high-definition real-time video but also to transmit the drone’s position, flight altitude, and status. Control instructions from the ground operator to the drone must be sent, making ultra-low latency crucial. We also offer personalized customization to better align with your project’s development needs.
This drone video and data link supports transmission ranges of 20 km, 30 km, 50 km, 80 km, 100 km, 150 km, and up to 200 km. In the accompanying test video, a stable signal was maintained over a transmission distance of 186 km.
Q: Is it possible to power the vcan1933-8W using five lithium batteries? 18-21V?
A: The 1933-8W model requires a 24V power supply, but five fully charged lithium batteries only provide 21V.
Q: Will a 24V 2A power supply be enough for 8-watt Power Amplifier 39 dBm?
A: The average is 2A, the maximum value should be exceeded. It is best to use 24V 3A. Vcan1933-8W users manual
Q: What kind of video interface does the IP gimbal camera support? RTSP or UPD?
A: Our Vcan1933 is transparent transmission, does not distinguish between protocols, and any protocol can be supported. It is better that your camera support multiple protocols.
The standard configuration includes four omnidirectional fiberglass antennas. For enhanced signal strength, you might upgrade to directional flat panel antennas or Yagi antennas at the ground receiver side. However, keep in mind that these options require regular adjustments to ensure the antenna is always aimed at the drone. To simplify this process, you can use an automatic antenna gimbal, which will continuously orient the antenna toward the drone’s location. VCAN1916
Q: Can I control the 2x drone flight control via the remote control? One is mission plane, and one is relay UAV.
A: Yes. Most drone video data telemetry link has one TTL and one Sbus data port. If you want to control the 2x drone flight control via the remote control, then your radio link has two sbus connector. Our this model 1933 supports 2xttl and 2xsbus connector. Please tell us if you have this demand.
Networking Type
- P2P: One Point (transmitter) to one Point (receiver) Networking Type
- P2P via Relay / Repeater Networking Type
- Multi-Point to One Point Networking type. (Multi transmitters to one receiver or Multi receiver for one transmitter)
- Multi-point to multi-point MESH networking type. (multi-transmitter in the air and multi-receiver on the ground)
Gross Weight
Slava Khimich –
This drone link delivers outstanding long-range transmission capabilities, maintaining stable connections even at distances up to 150 km. It’s perfect for extended UAV missions.