COFDM wireless digital video transmitter was designed for use with HD or SD cameras, it’s a superior miniature wireless video transmitter designed to capture real-time, high-quality video from Point of View Cameras, UAV/UGV/Body Cams/Concealments, and sports cameras. The transmitter features HDMI or SDI or AV inputs with COFDM modulation technology and H.264/H.265 encoding that complete video audio transmission in high-speed motion and NLOS (non line of sight) conditions with low latency. COFDM wireless transmitter delivers up to 27dBm/30dBm/34dBm(different model) of power in a small metal case weighing less than 150 grams, providing long range, reliable HD video transmission.
- COFDM modulation and H.264/H.265 video compression;
- Full HD resolution, 1080i/P @60fps;
- Great security by AES encryption;
- Modular design and highly integrated;
- Stable signal transfer in NLOS and high speed moving.
- Adjustable working frequency, band width, bitstream rates, RF power, etc.
Now we have several models COFDM transmitter (in different RF power and video input interface with the same technology solution which lists below) ready to ship. We can also customize wireless COFDM transmitter according to your requirements based on our modules very quickly.
|COFDM Transmitter Model||ST100||ST200||ST210-HDMI||ST210-SDI|
|Video input||Mini HDMI or AV||HDMI or AV + Ethernet||HDMI or AV||SDI or AV|
|Maximum RF Power||500mW||1W/2.5W||1W/2.5W||1W/2.5W|
|Power consumption||<[email protected]||<1.3A/[email protected]||<1.3A/[email protected]||<1.3A/[email protected]|
All of Sihid COFDM wireless transmitters are consist of three modules, H264/H.265 video encoder module, COFDM modulation module and power amplifier. All of Sihid COFDM transmitters use the same modulation module(Sihid RCB Module),the same H264 video encoder solution in different board model. All of the transmitters can be setup with Sihid Config Panel or Windows PC via control UART.
COFDM wireless transmitter Specification:
|HD Video input||HDMI/SDI/Ethernet(Specify in different model)|
|Composite Video input||NTSC or PAL|
|Data UART||Up to 115200 baud Selectable|
|Control UART||UART setup from Config Panel or PC or other device|
|Power in||DC supply|
|Bandwidth||Configurable from 1MHz to 8MHz, step by 1KHz|
|FEC||1/2, 2/3, 3/4, 5/6, 7/8|
|Guard interval||1/32, 1/16, 1/8, 1/4|
|Constellation||QPSK, 16QAM, 64QAM|
|Bitrates||0.5Mbps to 31.67Mbps|
|Frequency Bands||Specify: 300~360MHz, 350~400MHz, 450~500MHz, 520~560MHz, 580~620MHz, 680~720MHz, 820~860MHz, (customizable from 200~860MHz)|
|Tuning Step size||1KHz|
|Power out||27dBm, 30dBm, 34dBm(Specify in different model)|
Video and Audio
|Video input||HDMI/SDI(Specify) or CVBS, auto-detected after system start-up|
|Video formats||[email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected] 50I, [email protected], [email protected], [email protected], [email protected], ……|
720*480 60I(NTSC), 720*576 50I(PAL)
|Audio input||Embedded HDMI/SDI or AV audio|
|Audio Coding||AAC, 16bit, stereo, 32Kbps|
Video latency: about 200ms, when Sihid COFDM transmitter is paired with the receiver, the video(1080p60) latency from its inputting of the transmitter to the HDMI screen displaying of the receiver is about 200~250ms.
Wireless transmission range: this is relative with many conditions, the following data is just for your reference. When 1W(RF power) COFDM transmitter paired with the receiver, 6MHz bandwidth, centre frequency 590MHz, 5 dBi omni antenna with 2 metres to the groud on both sides, the LOS(line of sight) transmission range is about 1km to 2km. When 1W(RF power) COFDM transmitter paired with the receiver, 6MHz bandwidth, centre frequency 590MHz, 1.5 dBi omni antenna on the UAV(flying height 100 metre), two 7 dBi omni antenna with about 2 metre to the ground, the LOS(line of sight) transmission range is about 10km to 20 km.
Monitoring and control
Comprehensive transmitter setup with Config Panel or PC or other device via Control UART.
Full specification: 0° to +55°C Ambient
Input range: 11~13VDC
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FAQs about Wireless Video Transmitter and Receiver
Our wireless video transmitters have these types of video input interfaces: HDMI 1080P and 4K HDMI, CVBS composite, SDI, AHD, IP Ethernet, BNC, or tell us what type do you need, our engineer will modify to meet your demand.
Our transmission distance can be adjusted by adding power amplifiers. At present, the main ones are 15km, 30km, 50km, 80km, 100km , and 150km, which depend on the needs of customers.
Of course, the transmission distances listed above are all within LOS the line-of-sight range. If there are obstacles between the transmitter and the receiver, NLOS (the non-line-of-sight), the transmission distance is greatly reduced, only 1km or 2km, depending on the number of intermediate obstacles and the local wireless environment.
One-way means, We can only transmit and download video or data from the wireless video transmitter to the receiver in one direction, and we cannot upload video or data from the receiver to the transmitter. This type is also called simplex.
Two-way means that, not only we can download video or data from our wireless transmitter to the receiver, but also we can upload the video or data from the receiver to the transmitter. This is very suitable for operating drones. You can not only see the real-time video transmitted from the drone, but also upload the command to control the drone or the command to control the PTZ camera to adjust the angle to the transmitter. This can operate simultaneously. This type also named half-dulpex or full-duplex.
Please check the details at the below link. https://ivcan.com/request-a-quote-of-wireless-video-transmission/#simplex
Most Wireless video transmitters now support AES128 or AES256 bit encryption and decryption, depending on which model you choose. Please contact us to verify.
The frequencies of both the wireless video transmitter and the wireless video receiver can be modified. Users need to purchase additional parameter configuration boards.
However, considering that the corresponding power amplifier and antenna are already fixed within a certain range when the goods are sent out. If the user adjusts the frequency of the transmitter, the corresponding power amplifier, transmitter antenna and receiver antenna should also be modified to the same frequency, and these users need to be prepared. If not, it will cause the frequency of the wireless video transmitter to be different from the frequency of the antenna, making reception difficult. So please be sure to inform the correct frequency you need before placing an order.
If it is for security or confidentiality, you can use the encryption and decryption functions of the transmitter and receiver, which can ensure that your video transmission is private. .
Yes, all our product parameters can be customized according to customer's needs. If you have a special request, please let us know via the link below.
- Change the place of the receiver to avoid potential local interference from strong magnetic environments.
- Ensure that the antennas on both the transmitter and receiver are vertical.
- Please raise the antennas of the transmitter and receiver to maintain a certain height difference.
- Please look around to ensure that there are no obstacles between the transmitter and receiver.
- Change the orientation of the receiver antenna.
- If it doesn't work, try moving the receiver to be near the transmitter's position to see if it exceeds the effective wireless transmission distance.
- Or consider adding a relay of the transmitting between the transmitter and receiver.
- The antenna should be as high off the ground as possible, as the ground will absorb the transmitted signal.
Of course, we also understand that wireless video transmission transmitters and receivers are very expensive. You are far away from the China factory. and hope that the goods you receive are fit for the best performance.
If you pay special attention to a specific parameter or function, we can take some test videos based on the features you want to see, please feel free to contact us. It won't be shipped to you directly without your approval.
To test the delay of the wireless video transmitter and receiver, we need to do two tests.
The first is to test the delay from the camera to the display.
The second is the camera, plus the display plus the wireless image transmission transmitter and the delay of the receiver.
Subtracting the two test results is the real delay of the wireless video transmitter and receiver.
As a professional long-range HDMI wireless video transmitter and receiver supplier and manufacturer in China Shenzhen, we produce the best wireless video transmitter and receiver for many years, and we got a good reputation and best reviews.
Some famous brands of wireless video transmitters, like Blackmagic, Holyland mars 300 400s, Accsoon cine eye 5g, RavenEye, Zhiyun, Inkee benbox, actiontec, CVW SWIFT 800, dahua, iogear, Artek pat-225k, microlite, nyrius, teradek.
The best budget wireless broadcast video transmitter and the receiver have many applications, for 4K tv, CCTV security camera, vehicle backup camera, PTZ video camera kit, battery-powered, computer, sony camcorder, wifi video conference system, CANON DSLR, UAV drone, pc computer laptop, projector, in-car, iPhone iPad, live streaming, GoPro sports camera, raspberry pi, Xbox.
The full HD video, audio, data link smallest 1080P wireless video transmitter and the receiver has many input and output connectors, like AV composite CVBS, HDMI, SDI, BNC, VGA, USB.
The wireless video transmitter sender TX RX frequency has 170-806Mhz, 1.2ghz, 2.4G, 5.8G, lowest but not zero latency. In order to support longer distances, the power amplifier has 10w, 20watts, and even 30W.
What is a best buy FHD wireless video transmitter at a cheap price? It should consider your details requirement, choose suitably, not expensive, if you have any doubt, please fulfil the request a quote form, our engineer will offer you a solution.