30Km long distance COFDM HDMI Wireless Video Transmitter
30Km long distance COFDM HDMI Wireless Video Transmitter Receiver full Set Audio Video TX RX for UAV Drone 1080P 908T

- Upgrade Parts/Accessories: Parameter Tool Board
- RC Parts & Accs: Receivers
- Use: UAV, Vehicles & UGV
- Technical parameters: COFDM
- Model Number: COFDM-908T
- Modulation: COFDM
- Working voltage: DC11V-DC13V
- Working current: 0.5~2W (depending on different PA)
- Carrier number: 2K
- Transmission power: 0.5W~10W optional
30-150Km long-distance COFDM HDMI Transmitter Wireless Video Transmission system Receiver full Set Audio Video TX RX for UAV Drone UGV 1080P
Feature
- Highly integrated, modular combined design
- Using COFDM modulation technology, H.264 image coding technology
- It can transmit one channel of 1080P HDMI (optional SDI) signal
- Lower delay, the minimum end-to-end delay is 250ms
- All-round communication, not afraid of building walls
- High-speed communication between traveling,
- Transmitter heat sink type aluminum case, shockproof
- Support LOS and Non-line-of-sight (NLOS) mobile transmission
- The distance is not less than 30 kilometers under the condition of line-of-sight (2W power amplifier)
- The maximum moving speed can reach 600Km/hour (measured)
- Synchronous reception of audio and video signals, high-definition HDMI1080P multi-format optional, standard-definition output DVD image quality
- The receiver can realize video recording and backup functions
- 128-bit AES encryption and decryption
- Full customization available
Application
This product is mainly used in the technical reconnaissance and evidence collection of public security and safety inspection departments, real-time image transmission of unmanned aerial vehicles, unmanned ships, radio and television relay, radio and television live broadcasts: broadcast field, sports broadcast, social news, air live, studio, mountaineering Expedition, and other aspects. It is suitable for real-time mobile transmission of high-quality images in various complex environments such as urban areas, seas, and mountains.
Transmitter Specification
modulation method | COFDM |
working voltage | DC11V~DC13V |
working current | 0.5W: ≤0.6A DC12V, 1W: ≤0.8A DC12V, 2W: ≤1.5A DC12V 5W: ≤2.0A DC12V 10W: ≤3.0A DC12V |
control interface | standard RS232 interface, 8 Data Bits, 1 Stop Bit, Parity Bit, Baud Rate: 19200 |
transparent data interface, | a one-way transparent serial port transmission, 8 Data Bits, 1 Stop Bit, support Odd Parity, Parity Bit, Wireless Parity, Baud Rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 |
encryption methods | support 128-bit encryption |
modulation mapping | QPSK (4QAM), 16QAM, 64QAM |
forward error correction | 1/2 2/3 3/4 5/6 7/ 8 |
Guard interval | 1/32 1/16 1/8 1/4 |
Carrier number | 2K |
Frequency bandwidth | 2/3/4/5/6/7/8M Adjustable |
transmission code stream | 2000kbs~20000kbs Adjustable |
transmit power | 0.5W/1W/2W/5W/10W |
transmission frequency | Any Frequency Customizable, Step 1MHz |
a power flatness | within10MHz bandless than 0.2dB |
ratio of shoulder | the output power of 27dB, shoulder ratio is better than -30dB |
the second harmonic | ≤-45dB |
MER | 32Db |
input video | 720×480 60I(NTSC), 720×576 50I(PAL), 720 50P, 720 60P, 1080 50I, 1080 60I, 1080 24P, 1080 25P, 1080 30P, 1080 50P, 1080 60P, various modes are adaptive. |
HD Interface | HDMI, SDI optional |
video encoding format | H.264 |
protection standard | all-aluminum radiator-type chassis, anti-corrosion, shock-proof design |
Overall size | 9 x 6.4 x 2.3 cm |
Overall weight | ≤0.20KG |



Receiver Specification
Machine Rack-mounted multi-bandwidth HD receiver parameters | |
Receive frequency range | 170-860MHz VHF&UHF |
frequency bandwidth | 2/3/4/5/6/7/8MHz, optional |
RF input level | -94dBm~-15dBm (8M bandwidth)/-98dBm ~-15dBm (2M bandwidth) |
RF input impedance | 50 ohms |
RF input connector | N-head |
demodulation mode | COFDM |
constellation mode | QPSK, 16QAM, 64QAM (optional) |
forward error correction | 1/2, 2/3, 3/4, 5 /6,7/8 (optional) |
carrier number | 2k, |
guard interval | 1/32, 1/16, 1/8, 1/4 (optional) |
video decoding | [email protected]/H.264 |
aspect ratio | 4: 3 16: 9 |
video image is | 720 * 576 @ 8MHz 1080P @ 60P |
audio output mode | stereo unbalanced 300 / 200mv |
audio output | output2Audio + 2Video output |
operating voltage | AC220V / DC12V <0.5A |
Operating temperature | – 20℃~+50℃ |
Appearance size | 480*260*45 (1U) chassis |
equipment weight | 1.5kg (two-way language 2.5Kg) |
Note: the default connector is HDMI, if you need the cheaper model, a connector for CVBS Yellow video connector 720p HDMI, please Check here for another model.
Description:
– This device adopts COFDM technology, which integrates transmission antenna, digital modulation, audio, and video function.
– Compact size, small heat, and long transmission range
– compatible with a small camera, could enable HD image capture and transmission
– the transmission range will be longer if it adopts high gain antenna
– Transmission range: 5000m (without any interrupt)/500M with obstacles interrupt
Features:
– Compact size, modulation design
– Adopts COFDM modulation technology, MPEG-2 image com compression technology
– Omnidirectional communication
– high-speed communication enables real-time audio and video transmission
– An aluminum case that is shockproof
– NLOS transmission
Specifications:
Transmitter:
– Size:90x64x23mm
– weight:200g
– antenna:22mm
Receiver
– size: 87x70x20mm
– weight:200g
– Antenna height:42.5cm (could be bent)
Technical specification
– Modulation: COFDM
– working voltage: DC11V-DC13V
– Working current:0.5W: less than 0.6A @ DC12V
– control port: standrad RS232 port. 8-bit data bits, 1-bit stop bit, Baud rate:19200, support odd parity check
– transmission data port:8 bit data bits,1 bit stop bit, Baud rate,1200,2400,4800,9600,19200,38400,57600,115200,230400
– Encryption: support 128 encryption
– Modulation mapping: QPSK (4QAM),16QAM,64QQAM
– Forward error correction: 1/2,2/3,3/4,5/6,7/8
– Protect the interval: 1/32,1/16,1/8,1/4
– Carrier number:2K
– Frequency bandwidth:2/3/4/5/6/7/8M adjustable
– transport stream:2000kbs-20000kbs adjustable
– transmission power: 2W
– transmission frequency: could be customized, step is 1Mhz
– power flatness: less than 0.2db within10Mhz
– Second harmonic: less than -45db
– MER:32db
– input video:1Vp-p,75ohm
– Video program format: MPEG-2
– Video quality: 720×576 when above 4M
– Format: NTSC and PAL could be set
Receiver technical specification:
– Receiver frequency range: 170-860Mhz, VHF and UHF
– Frequency bandwidth: 2/3/4/5/6/7/8 Mhz, adjustable
– RF input level:-94dbm-0dbm at 8M/-98dbm-0dbm at 2M
– RF input impedance: 50ohm
– RF input port: SMA
– modulation: COFDM
– The constellation way: QPSK,16QAM,64QAM optional
– Forward error correction: 1/2,2/3,3/4,5/6,7/8 optional
– Carrier number:2K
– Protection gap:1/32,1/16,1/8,1/4
– Screen rate:4:3,16:9
– video image:720×576 @6Mhz
– Audio and video output port: standard 3.5 port
– Working voltage: DC12V 0.3A
Package included:
– 1 x transmitter
– 1 x receiver
– 1 set x accessories
30Km long distance COFDM HDMI Wireless Video Transmitter
FAQ
Question 1: I need at least a 30km range from air to ground for the UAV UGV USV.
Answer 1:Our system supports it, it should use a 2W power amplifier, it is better to use the special long transmitter antenna and two higher receiver antennas.
COFDM-912T VS COFDM-908T


Question 2: How far can I get if I use the transmitter and receiver both on the ground?
Answer: On ground use, the transmitter and receiver must have a certain height difference to transmit long distances.
The longest distance is only 2.5 kilometers if the transmitter and receiver are both at the same height on the ground. Please see our test video; because the transmitter and receiver are placed at different levels, one side is at the mountain, another side is at the seaside, we used the default two watts to transmit 27 kilometers.
Question 3: Does it support a working environment of -20 degrees?
Answer: Yes, supported
Question 4: I want to buy modules and built-in my devices, please tell me the dimension of that modules.
Answer: SD model: 6X7X1.6cm, HD model: 5X7X1.6cm
Reviews
There are no reviews yet.