20km-100km Drone Video Transmitter COFDM Duplex IP Video Data Transceiver
Key Features
- TDD OFDM full duplex Modulation
- Up to 30Mbps Iperf Throughput at 20MHz bandwidth channel
- Supports point to point and point to multipoint networks or Mesh networks
- Control by web browser or control uart
- 2 Ethernet and 3 channel uart for UAV data link
- 22km~100km Long distance wireless video data transmission with 2W or 5W RF power
Product Overview
HCL536 Drone Video Transmitter was designed for video and data wireless transmission with two-way wireless data link. This OFDM radio link works at 800MHz or 1.4GHz bands, with frequency hopping technology (FHSS) to ensure stable signal communication.
Specifications
| 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 |
| Transmission Range |
22~100km (UAV to Ground) |
| Management |
Web UI and Control Uart |
| Encryption |
AES128 |
| Networking Mode |
Point to Point, Point to Multipoint, Relay, Mesh |
| Movement Speed |
Support no less than 300km/h |
| Power Input |
12~18V(2W), 24~28V(5W) |
| Power Consumption |
<12W(RF Power 2W), <22W(RF Power 5W) |
| Dimensions |
103.4*61.4*22mm |
| Weight |
142g |
Input/Output
| Ethernet 1 |
4Pin ZH1.5mm connector, bridged with Ethernet2 |
| Ethernet 2 |
RJ45 connector, bridged with Ethernet1 |
| Uart *3 |
3Pin GH1.25mm lockable connector*3, 3 channel uart, RS232/TTL/Sbus optional |
| Power in |
XT30PW-M connector |
| ANT1 |
Tx/Rx Antenna port, SMA female |
| ANT2 |
Rx Antenna port, SMA female |
Wireless Networking with HCL536
HCL536 drone video transmitter supports two operating modes: Access Node or Central Node. It can be managed through web UI. HCL536 supports features of maximum 16 Access Nodes connected to a Central Node. All of the Nodes are in a same wireless LAN and share the whole transmission bandwidth (maximum 30Mbps@20MHz throughput). Data from Central Node to Access Node, we call downlink, and data from Access Node to Central Node, we call uplink. Uplink and downlink stream ratio can be controlled through web UI.
Networking Types
Frequently Asked Questions
Q1. This drone video transmitter seems to support IP camera, what if I want to use a camera with HDMI or SDI video output?
A: The default video input is IP RJ45 Ethernet port. If your camera only has HDMI, SDI, AHD or AV output, you need to use our mini encoder device to encode the video and audio signal into digital data for transmission. At the receiver end, you can connect it directly to your computer or NVR. If you want to output to an HDMI monitor, you can also use our decoder device to convert the digital data back into HDMI video and audio signals.
Q2. Should I choose 800MHz or 1.4G band? Which one is better?
A: If your area has a DVB-T or DVB-T2 digital television signal (170-860Mhz), choose 1.4G would be better. The 1.4G frequency effect on GPS is negligible as GPS antenna receives signal upwards while our transmitter antenna points downwards.
Q3. Does it support using multiple cameras on the transmitter to only one receiver?
A: Yes, it supports multiple cameras. There are two solutions:
- 4 IP cameras → Net Hub → Transmitter ↔ Receiver → Computer Screen
- 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. You can monitor the link status through LED indicators:
- No light: Not connected
- Red light: Weak signal
- Orange light: Medium signal
- Green light: Strong signal
If the signal is Orange or Red, you should control the UAV back in advance.
Q5. Can the air unit and ground unit be interchanged for use with change in the setting?
A: The difference between air unit (transmitter) and ground unit (receiver) is:
- Device type: Air unit is the access node and ground unit is the central node
- Rate ratio of the downlink and uplink (over 30km, best ratio is 4:1 or 3:2)
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