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50km UAV Video Data Link IP FHSS AES128 Encryption 800MHz 1.4GHz

50km UAV Video Data Link IP FHSS AES128 Encryption 800MHz 1.4GHz
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Frequency: 806~826MHz OR 1428~1448MHz
Working Voltage: 12-16V (Default 12V)
Power Consumption: ≤12W
Modulation Mode: BPSK, 16QAM And 64QAM (TDD-OFDM)
Video Input: IP
Encryption: AES128 (user-defined Key)
RF Interface: SMA Female
High Light:

UAV Video Data Link


AES uav data link system


800MHz uav data link

Basic Infomation
Place of Origin: Shenzhen China
Brand Name: OEM / LinkAV
Certification: CE
Model Number: LKAV-3621A
Payment & Shipping Terms
Packaging Details: Brown Carton
Delivery Time: Negotiable
Payment Terms: T/T, PayPal
Supply Ability: 1000pcs/Month
Product Description

50km UAV Video Data Link IP FHSS AES 800MHz 1.4GHz



The LKAV-3621A is an IP radio works at 806~826MHz or 1428~1448MHz, it supports long-distance bidirectional wireless video, audio, and data transmission, with a maximum distance of around 50km in air-to-ground scenarios. It provides multiple service interfaces, including 2 Ethernet ports, 3 serial ports, and audio input/output interfaces.



■TDD-OFDM modulation

■Supports 800HMz or 1.4GHz band and FHSS inside each band

■Output power 2W

■Supports 3/5/10/20MHz bandwidth

■Max 30Mbps@20MHz throughput

■Supports one-to-one and one-to-many transmission

■Supports serial data and video at the same time

■Up to 50km LOS transmission range (air-to-ground)

■WebUI for management

■AES128 encryption (user-defined)

■Uplink and downlink stream control

■Supports 12V-16V voltage

■Compact size and light weight

■Rugged aluminum alloy housing



Item Parameters
Frequency 806~826MHz OR 1428~1448MHz
RF Bandwidth 3MHz/5MHz/10MHz/20MHz
RF Channel 1T2R
Output Power 33dBm (2W)
800MHz Sensitivity




1.4GHz Sensitivity




Max Throughput Max 30Mbps@20MHz
Modulation BPSK, 16QAM and 64QAM (TDD-OFDM)
Networking Mode One-to-one and one-to-many (one to Sixteen max)
Antenna Interface 2x SMA-F Connector
Ethernet Interface 2x Ethernet Port (100M)
Serial Port 3x UART Port (TTL232)
Baud Rate 115200bps (Configurable)
Video Input IPCam
Channel Latency 10ms
Encryption AES128 (User-defined)
Movement Speed Supports no less than 120km/h
Power Input 12VDC (12V-16V)
Working Current <1A
Power Consumption <12W
Dimensions 103.5*61.5*22mm
Weight 142g
Working Temp. -20°C ~ +55°C
Storage Temp. -40°C ~ +65°C



Item# Interface Description
1 Ethernet1 4-pin ZH1.5mm socket, Ethernet1 internally bridged with Ethernet2 on the device.
2 Ethernet2 RJ45 socket, Ethernet2 internally bridged with Ethernet1 on the device.
3 RS232*3 9-pin ZH1.5mm socket, 3x RS232 serial ports.
4 Audio in/out 4-pin ZH1.5mm socket, audio input/output interface.
5 Power in XT30PW-M socket, power input interface.
6 ANT1 SMA female connector, main antenna interface for TDD transmission/reception mode.
7 ANT2 SMA female connector, auxiliary antenna interface used for reception only, not for transmission.


RS232 Serial Ports


3x RS232 serial ports (D1, D2, D3), 9-pin ZH1.5mm spacing socket, detailed pin signals for each pin can be found in the diagram below. Among them, the D1 serial port has the highest priority in wireless link data transmission (higher than audio and video data, network port data, and other port data), with the lowest latency. D2 and D3 serial ports access the wireless network through the network IP. The baud rates for the three ports and the transmission modes for D2 and D3 ports can be configured through the WebUI. The D3 serial port can also be reused simultaneously as the management configuration port for the system, allowing system parameter configuration, query, and management using AT commands through this port.


Note:D1 is fixed as TTL, D2 & D3 is optional for RS232 or TTL.


Serial Communication

Please use an USB to TTL serial 3.3V adapter cable to connect your computer and the device (TTL)

50km UAV Video Data Link IP FHSS AES128 Encryption 800MHz 1.4GHz 0

On your serial debugging tool please select the correct serial port, and other settings are as below:

Baud: 115200bps

Data: 8 Bits

Parity: None

Stop: 1 Bit

50km UAV Video Data Link IP FHSS AES128 Encryption 800MHz 1.4GHz 1


Application Notes

It can realize long-distance two-way wireless communication, point-to-point two-way communication, or point-to-multipoint two-way communication. In point-to-multipoint communication, if the communication between two access nodes needs to be transferred through the central node, each node is in the same wireless local area network, and all access nodes communicate with the central node to share the wireless bandwidth, and the device automatically allocate the system rate evenly. The data transmission from the central node to the access node is called downlink, and the data transmission from the access node to the central node is called uplink. In point-to-point or point-to-multipoint communication, the downlink and uplink share the wireless bandwidth. When the device is shipped, the default setting is the ratio of uplink rate to downlink rate = 4:1. Therefore, if using the device to transmit IP Camera video, the IP camera should be connected to the access node. The device will automatically and dynamically adjust the wireless transmission rate according to the carried data stream. When the amount of carried data is smaller, the transmission distance will be longer under the same conditions. Therefore, when using the device to transmit IP Camera video, it is possible to increase the wireless transmission distance by appropriately reducing the IP Camera video encoding bit rate.


50km UAV Video Data Link IP FHSS AES128 Encryption 800MHz 1.4GHz 2


50km UAV Video Data Link IP FHSS AES128 Encryption 800MHz 1.4GHz 3


Package Content

For reference only, subject to change for each project.

Item Name Description Qty
TX Transmitter (Access Node) 1
RX Receiver (Central Node) 1
Whip Antenna 1.4GHz, 2dBi, SMA Male 2
FRP Antenna 1.4GHz, 5dBi, N type Male 2
Ethernet Cable 4-pin to RJ45 female, 10cm 2
Ethernet Cable RJ45 male to RJ45 male, 2m 2
Extension Cable SMA M to SMA F, 30cm 2
Extension Cable SMA M to Type N F with flange, 50cm 2
Serial Cable 9-pin to 9-pin cable, 15cm 2
Audio Cable 4-pin to 4-pin cable, 15cm 2
Power Supply 12V/3A DC power supply 2


About LinkAV

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Founded in 2005, LinkAV has been dedicating to design and manufacture mobile wireless video/data transmission systems including COFDM, IP MESH and 4G-LTE series, with a group of professional engineers to provide tailor-made service (OEM). LinkAV serves a diverse, high demanding customer base from police/military to ordinary citizens, from UAV to UGV/Robots, from oil field to forest, from overseas to mainland China.

LinkAV is a China leading manufacturer (OEM) of innovative wireless communications and information systems. Our advanced data link systems are ideal for critical communications in tactical unmanned systems such as unmanned ground vehicles (UGVs), unmanned aerial vehicles (Drones, UAVs) and unmanned surface vehicles (USVs), and are designed with portability and reliability foremost in mind.


Our Advantages

■ Over 18 years experiences in wireless communication solutions.

■ High product quality, competitive price and low MOQ

■ Excellent pre-sale and after-sale technical team.

■ Quick response and fast delivery.

■ OEM supported.



Q1: Are you a manufacturer or a trading company?

We're professional manufacturer specializing in wireless transmission systems.

Q2: Why should I choose you?

You'll get competitive price, prime quality, satisfied service and long warranty.

Q3: What kind of product service can I have?

OEM & ODM service.

Q4: What kind of warranty do you offer?

We offer one-year-warranty and lifelong maintenance.

Q5: What're the payment terms?

We accept bank transfer, PayPal, or cash payment.

Q6: Packaging & Shipping?
Neutral brown carton & Ship via DHL, FedEx, UPS, TNT or by air/sea.

Q7: How long for delivery?
1-3 weeks for regular model and 3-5 weeks for customized model.

Q8: Can I order 1 sample for test?

Yes, we welcome sample order, mixed samples are acceptable.

Q9: Do you have any MOQ limit?

No limit, 1pc is acceptable.

Q10: Is it OK to print my logo on the product?

Yes, please inform us formally before production and confirm the design firstly


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Tel : 0086 15817349508
Fax : 86-755-83735058
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