COFDM Wireless AV SD 720P Video Transmitter FAQ
COFDM Wireless AV SD 720P Video Transmitter Receiver Transmission composite CVBS in H.264 COFDM-912
COFDM HDMI Transmission Transmitter Receiver full Set Wireless Digital Audio Video TX RX for UAV Drone 1080P Video SDI
AES 128 Video Encryption
Strong video encryption function to ensure the video security.
2 Watts Power Amplifier, support 30KM transmission distance
Transmission frequency is modifiable by the parameter configuration board.
Receiver screen can shows the signal strength of the transmitter, users can move better reception place.
The lower latency delay is less than 200~300 millisecond.
Full set in the package
The package is including transmitter, receiver, both side antenna and accessories cable.
1W RF output;
SD 720P composite CVBS in
Support NLOS LOS transmission
Delay <300 Millisecond;
COFDM-912T adopts advanced COFDM (multi-carrier modulation technology), which integrates transmitting antenna, digital modulation, and audio and video digital compression. It has a small size and long transmission distance. Modular combined design can be used with secret shooting clothes and small cameras, can realize hidden on-site high-definition image collection and transmission. It is a highly integrated mobile non-line-of-sight digital mobile video wireless image transmission equipment that can transmit real-time and stable audio and video in high-speed movement and under the condition of urban buildings.
The transmission system can reach a transmission distance of more than 500 meters and a line of sight of more than 10 kilometers under general blocking conditions. Using high-gain directional antennas or omnidirectional antennas can further increase the transmission distance. If you need a longer transmission distance, you can use the existing wired network, mobile communication (satellite), and use our company’s portable relay transmission equipment or vehicle-mounted wireless video transmission system for relay transmission. The transmission distance of the system can be Reach more than 20 kilometers.
There are 2 different powers for the secret shot type equipment (0.5W and 1W@average power PA). The greater the power, the stronger the signal penetration and the longer the transmission distance.
Transmission distance: visual environment ≥ 2km. Blocking environment: ≥500m (different depending on the environment)
- Highly integrated, modular design
- Adopt COFDM.cn modulation technology, MPEG-2 image compression technology
- All-round communication, not afraid of building walls
- High-speed inter-line communication, real-time, stable DVD image quality for audio/video transmission
- Heat sink aluminum housing, shockproof and shock-resistant
- High fidelity digital stereo transmission
- Non-line-of-sight (NLOS) mobile transmission for longer distance
This product is mainly used for technical reconnaissance and forensics in the military and security inspection departments. Radio and television broadcast, radio and television live broadcast: broadcasting field, sports broadcast, social news, aerial live, studio, mountain adventure, and so on. It is suitable for real-time mobile transmission of high-quality images in many complex environments such as urban, marine and mountainous.
For drones ( recommend adding extra wave filters, need extra cost )
Operating Voltage: DC11V~DC13V
Yes, the frequency can be changed from 170Mhz to 860Mhz.
The frequency should be modified to the same on the transmitter and receiver. Of cause, the Power Amplifier and antenna frequency should modify the same frequency.
The default frequency is 590Mhz, With 30Mhz (+/-15Mhz), you can change it without modifying the Power Amplifier and antenna. For example, 578Mhz, 584Mhz, 590Mhz, 596Mhz, and 602Mhz.
Yes, it supports to send the video and UART data from the transmitter and receiver.
As it is one-way transmission, so it can not send the control command from the receiver to the transmitter.
Please check the UART define on the transmitter and receiver at the below link. Please tell me if you want to have a lead cable. (default is no)
The transmitter default Power Amplifier is 2 Watts, so it can support 30 KM at line-of-sight.
The below picture is our tested distance from the mountain to the seaside.
Yes, if you need, we can change 5W or 10W PA to support longer distance.
Step 1: Please press OK and the right button at the same time, a menu of whether to save appears on the screen.
Step 2: Please press OK to choose Yes to save.
Remind, please use the bigger or longer antenna if your project allows, it can get better reception performance in the larger range.
- As this transmitter has built-in 1W or 2W PA inside, please connect the transmitter antenna first then give it the power to protect the transmitter PA Power Amplifier.
- In order to ensure the stability of the sending and receiving signals of the image transmission and the smooth transmission of the picture, please do not block the antenna as much as possible, and try to place it in a high place, such as on the roof or on a tripod.
- Please keep the antenna vertical.
- Please make sure that there is a certain height difference between the transmitting antenna and the receiving antenna.
Real Test in City NLOS (non-line of sight) supports 1.5km, Transmitter in the building, transmitter in the moving for UGV (unmanned ground vehicle)
COFDM Wireless video transmitter receiver transmission with removable configuration parameter set board
Real Test in the City NLOS, Transmitter at the building, and receiver with camera in the moving car, complex environment.
1.5km for ground NLOS, 10-20-30km LOS air to ground wireless video transmitter receiver transmission
Cheap Wireless video transmitter and receiver's small screen has great help on signal strength lock
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