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Long Range TDD Video Wireless Transmitter FHSS UAV Video Data Link RF Transmission System
Key Features
TDD OFDM video wireless transmitter for UAV video data Link
Maximum 30Mbps @20MHz bandwidth
Networking type communication: point-to-point and point-to-multipoint Networks or Mesh networking
Web UI or Serial uart for management
2 Ethernet and 3 channel uart for UAV data link
22km~100km Long distance wireless transceiver with 2W or 5W RF power
Uplink and downlink data stream control
Product Description
HCL536 video wireless transmitter was designed for UAV video data wireless transmission with dual wireless data link. It works at 800MHz or 1.4GHz bands, with frequency hopping spread spectrum automatic technology (FHSS) to ensure stable signal communication.
Technical Specifications
Product name
Long Range TDD Video Wireless Transmitter FHSS UAV Video Data Link RF Transmission System
Model number
HCL536
Modulation
TDD OFDM
Frequency
806~826MHz, 1428~1468MHz, 1420~1530MHz
FHSS
Support
Bandwidths
1.4/3/5/10/20MHz
Throughput
Maximum 30Mbps@20MHz
RF Transmission Power
2W or 5W
Constellation
QPSK,16QAM,64QAM self adaption
Sensitivity
-108dBm(1Mbps)
Ethernet ports
2 * Ethernet ports
Serial ports
3 channels, 3*RS232, 3*TTL or 2*RS232/TTL + 1*Sbus
HCL536 video wireless transmitter supports 2 operating modes: Access Node or Central Node. It can be managed through web UI and supports up to 16 Access Nodes connected to a Central Node. All nodes share the entire transmission bandwidth (maximum 30 Mbps @ 20 MHz throughput).
The data from the central node to the access node is referred to as downlink, while the data from the access node to the central node is called uplink. The ratio of uplink and downlink data streams can be controlled through the Web UI.
Network Configuration Examples
HCL536 supports multiple networking modes:
Point-to-Point Network
Point to Multipoint Network
Relay Network
Mesh Networking
Frequently Asked Questions
Q1. This video wireless transmitter seems to support IP camera, what if I want HDMI or SDI video input?
A: The default video input is IP RJ45 Ethernet port. For cameras with HDMI, SDI, AHD or AV output, we recommend using our mini encoder device to encode the video/audio signal into digital data for transmission. At the receiver end, you can connect directly to your computer or NVR. For HDMI monitor output, our decoder device can convert the digital data back into HDMI video and audio signals.
Q2. For the 800MHz and 1.4G band? Which one would be better?
A: If your local area has DVB-T or DVB-T2 digital television signal in the 170-860Mhz range, the 1.4G band would be better. Additionally, since GPS antennas on drones point upward and transmitter antennas point downward, the 1.4G frequency has negligible effect on GPS signals.
Q3. Does it support using multiple cameras on the transmitter to only one receiver?
A: Yes, there are two solutions for multiple cameras: 1. 4 IP cameras → Net Hub → Transmitter ↔ Receiver → Computer Screen 2. 4 IP cameras → NVR HDMI output → HDMI encoder IP output → Transmitter ↔ Receiver → computer screen.
Q4. Does the transmitter on the air give failsafe command to the flight controller when the connection between air and ground will be lost?
A: The serial port is transparent and doesn't actively send data to the flight controller. This is controlled by the ground station. You can monitor the link status via LED indicators:
Link LED
Wireless link status
No light
This node is not connected with the wireless network
Red light
The wireless link signal is weak
Orange light
The wireless link signal is in middle
Green light
The wireless link signal is strong
Q5. Can the transmitter and receiver be interchanged for use with change in the setting?
A: Yes, the difference between transmitter (on drone) and receiver (on ground) is: 1. Device type: transmitter is the access node and receiver is the central node. 2. Rate ratio of the downlink and uplink. Over 30km, the best rate ratio is 4:1 or 3:2.