COFDM Wireless video transmitter and receiver Dimension
The most recent advancements in COFDM (Coded Orthogonal Frequency Division Multiplexing) wireless video transmitter and receiver technology have transformed how video is transmitted and received. COFDM is a modulation technique that allows digital data to be transmitted over a wide range of frequencies, resulting in a more reliable signal and improved data transmission.
COFDM technology is used in numerous applications such as digital television, wireless video transmission, and digital radio. It’s also found in military and aerospace applications like satellite communications and unmanned aerial vehicles.
Finally, recent advancements in COFDM wireless video transmitter and receiver technology have transformed the way video is transmitted and received. This technology has enabled high-definition video transmission over wireless networks, as well as video transmission over a variety of networks and devices. The use of advanced coding techniques, such as forward error correction (FEC) and adaptive modulation, has enabled this.
COFDM video transmitter-receiver AV in HDMI out FPV, Wireless 10km-15km-30km long-range cheaper and longer COFDM-912T
$690.00 – $890.00
COFDM video transmitter-receiver FAQ
COFDM video transmitter receiver AV in HDMI out FPV, Wireless 10km-15km-30km long-range cheaper and longer
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.
Video + Data
Except video, it also support download data via the UART from the transmitter to the receiver. One-Way, Simplex.
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.
Powerful PA RF output (1 Watts or 2 Watts)
720P composite CVBS AV in on the transmitter, AV + HDMI output on the receiver
Support NLOS LOS long-range transmission
Optional parameter configures board for current parameter showing and adjustable
Recommended to use the fiberglass antenna to support strong signal and long-range
Delay latency <300 Millisecond;
What is the COFDM Video Transmitter?
- COFDM-912T adopts advanced COFDM (multi-carrier modulation technology), which integrates transmitting antenna, digital modulation, and audio and video digital compression.
- COFDM wireless video transmitter has a small size and a long transmission distance. Modular combined design can be used with secret shooting clothes and small cameras and can realize hidden on-site high-definition image collection and transmission.
- COFDM wireless video transmitter 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 COFDM Wireless Video transmitter-receiver 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.
- COFDM Wireless video transmitters 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 reach more than 20 kilometers.
- There are 3 different powers for the secret shot type equipment (0.5W, 1W and 2W@average power PA). The greater the power, the stronger the signal penetration and the longer the transmission distance.
- Transmission distance: visual environment ≥ 10km. Blocking environment: ≥500m (different depending on the environment)
(if you need long-range, we also have 5W, 10W, 20W PA products, see here)
- Highly integrated, modular design
- Adopt COFDM 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. (You need to buy a power amplifier and antenna for the transmitter and receiver to meet your changed 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.
If you need to send control commands or other data from the receiver to control other devices such as cameras or drones at the transmitter, you can add a set of cheap digital transmission equipment, contact us, and we can customize it for you.
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.
If you want to transmit a longer range, you can increase the power amplifier. In addition to one watt and two watts, we can also make 5 watts, 10 watts, and 20 watts for your choice. Larger amplifiers also require larger batteries and current support.
Our engineer can change frequency to 300Mhz from default 590Mhz, The antenna and PA in the warehouse are 590Mhz, 300Mhz need two weeks for customize, so the delivery time needs longer than our default 590Mhz.
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.
The default full set
- SD Transmitter ( PA 0.5W, 1W, 2W, 5W optional according to your order demand)
- SD Transmitter antenna
- HDMI CVBS output receiver with parameter control menu and small screen
- 0.8-meter Receiver antenna 1 pcs. (There are two types of installing or fixing the antenna: 1. magnetic base metal antenna, 2. U-type fiberglass antenna )
- Optional, parameter configuration board for the wireless video transmitter.
The default full set package dimension
- Gross Weight 7.5KG
- Some freight forwarders will charge extra fees, such as extra long fees and extra fees for strong magnetic items
The transmitter parameter configures board can adjust the signal attenuation on the transmitter.
The transmitter parameter configures board is different from the one on the receiver.
The firmware on the parameter configure board was different from the transmitter and receiver, they cannot be used interchangeably.
- 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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