Duplex Video Data Link Radio Data Transmitter For Airborne Wireless 1428MHz~1468MHz

20km~150km Video Data Link For Airborne Wireless Duplex Video Data Transmission

Key Features:

• TDD OFDM full duplex wireless transceiver for long range airborne video data Link.
• Up to 30Mbps Iperf Throughput at 20MHz bandwidth channel.
• Support point to point, point to multipoint, relay, mesh Networks.
• Control through web browser or control uart.
• 2 Ethernet and 3 channel uart data link.
• Long distance transmission range with 10W RF power.

Overview:

HCL551 video data link was designed for video data wireless transmission with two way wireless data link. This OFDM radio device works at 800MHz or 1.4GHz bands, with frequency hopping technology (FHSS) to make sure better stability signal communication.

Technical Specifications:

Input / output ports:

Point to Point networking type

Point to Multipoint networking type

Relay networking type

Mesh networking type (Specify)

Application:

FAQ

Q1. This video data link seems to support IP camera, what if I want to use a camera with HDMI or SDI video output?

A: Yes, the default video input is IP RJ45 Ethernet port, if your camera only has HDMI, SDI, AHD or AV output, you need to buy 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 buy 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, the TV frequency range is 170-860Mhz, so choose 1.4G would be better. Moreover, GPS antenna receives the GPS signal and the GPS direction on the drone is up, and our transmitter antenna is pointing down to send the signal to the ground. So the 1.4G frequency effect on GPS is negligible.

Q3. Does it support using multiple cameras on the transmitter to only one receiver? For example, use 3 IP cameras on the transmitter.

A: Yes, it supports. There are two solutions for the multiple cameras on transmitter to one receiver.

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 of our wireless video transmission link is transparent, no data is actively sent to the flight controller. This is controlled by the ground station. It won't send failsafe command, but you can see the link working status led from the signal indicator as below:

Flight controller doesn't get the information, but you can see the link status LED light, if it is Orange or Red, you should control the UAV back in advance. You can also get the RSSI values from below window:

Q5. Can the air unit and ground unit be interchanged for use with change in the setting?

A:The difference between the air unit (transmitter) and ground unit (receiver) is:

1. Device type: Air unit (transmitter) is the access node and the ground unit (receiver) is the central node.
2. Rate ratio of the downlink and up link. Over 30km, the best rate ratio is 4:1 or 3:2.