COFDM Telemetry Transmission Transmitter Receiver full Set Wireless Digital Audio Video TX RX for UAV Drone Video
$699.00 – $824.00
COFDM Telemetry Transmission Transmitter Receiver
COFDM Telemetry Transmission Transmitter Receiver full Set Wireless Digital Audio Video TX RX for UAV Drone Video
- Material: Composite Material
- Tool Supplies: Assembled class
- Upgrade Parts/Accessories: Adapter
- RC Parts & Accs: Receivers
- Size: 90x64x23mm
- Use: Vehicles & Remote Control Toys
- Technical parameters: KV1100
- Model Number: COFDM
- Remote Control Peripherals/Devices: Receivers
- For Vehicle Type: Airplanes
- Four-wheel Drive Attributes: Assemblage
- Wheelbase: Upper Shell
- Modulation: COFDM
- working voltage: DC11V-DC13V
- Working current: 0.5W
- Carrier number: 2K
- transmission power: 2W
2000mw COFDM Telemetry Transmission Receiver Set 2W Wireless Digital Audio Video Transmitter for UAV Drone Video
Note: the default connector is AV, if you need a connector for HDMI, please contact us 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 adopts high gain antenna
– Transmission range: 5000m (without any interrupt)/500M with obstacles interrupt
This listing is for 2W, transmission range is around 700m in the city
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 aluminium case which 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
The parameter configuration board on the transmitter and receiver is optional.
FAQs
1. Can I change the transmitter and receiver frequency? Can it work on 260 MHz band?
- Yes, the frequency range can be changed from 170Mhz (better from 220Mhz) to 860Mhz. So it can work well at 260Mhz band.
- 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).
- In order to improve the sensitivity of transmitting and receiving, the frequency bandwidth is generally made very narrow (center frequency ±15Mhz, so bandwidth should be 30Mhz). The power amplifier of the transmitter and the frequency of the antenna are specially customized according to the frequency you need.
- It is best when you place an order, please tell me what kind of working frequency you need. Our engineers will modify the frequency of the transmitter and receiver, and also modify the PA and custom antenna according to this frequency range to ensure the best sensitivity and support the longest transmission distance.
- 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.
- If you need to modify the transmitter frequency and bandwidth, you need a special tool of the parameter configure board, please see the below picture, it is not a default accessory, please buy it at an extra cost or contact us before ordering.
2. Does this transmitter can send video and data (uart) to the receiver?
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)
3. What the maximum distance does it support? Can I use 5W or 10W PA (power amplifier)?
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.
For 20W PA, the power supply should be 24~28V. Only at 28 volts can the power amplifier achieve the best workability.
4. Will the COFDM-912T perform as well at 300MHz as it does at 600MHz?
Our engineer can change the frequency to 300Mhz from the default 590Mhz, The antenna, and PA in the warehouse are 590Mhz, 300Mhz needs two weeks to customize, so the delivery time needs longer than our default 590Mhz.
5. It is cheapest and longest video transmission, but it has CVBS input only, how to connect my HDMI camera?
Yes, it support 720P CVBS video input on the transmitter and 1080P HDMI video ouput on the receiver.
If your camera is HDMI connector, you can use one HDMI to CVBS video convertor box, it will be much cheaper than you used one wireless video transmitter.
If you still need HDMI input on the transmitter, then the below model is recommended.
COFDM-908T is also recommended.
6. I have changed the parameter on the configure board tool, why it is not saving when I restart?
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.
7. Can I change the frequency to 300 Mhz when I received your cargo?
Yes, you can change the frequency to 300Mhz, but this is not recommended.
Why?
1. Our wireless video transmitter and receiver both support AES128 encryption and decryption. The password can be changed on the configuration board at any time. It is safe for your video.
2. If you change the frequency on the transmitter and receiver to 300Mhz, the antenna and Power Amplifier frequency should be changed to 300Mhz also.
For a small number of special frequency antennas, maybe the antenna factory will not agree to special produce.
3. Maybe the antenna problem is solved. The power amplifier in the transmitter is preset, and we also send you the test video before the delivery. If the end-user modifies the power amplifier frequency, it is easy to be burned. Without a power amplifier, then this system can not be working well the long distance. The buyer has to send it back to the China factory for repair, Although our repair is free, but the buyer has to pay all the shipping costs.
4. Please tell us what frequency the buyer wants to have, we will modify and test its quality in the factory. after QC passed, we will send you.
8. I see that the 912T device has a UART pin. Is it for config or communication?
COFDM-912T is a one-way wireless transmission system.
That means it only downloads the video or data from the transmitter to the receiver, but it can not upload the UART data from the receiver to the transmitter, for example, it can not control the transmitter's camera or drone.
Is it suitable for your project?
Or check the below link, we will understand clearly your project.
*
*
COFDM-912T is a one-way video transmission system.
If you need to control the camera and drone, you need to choose two-way models.
9. How smallest the wireless video transmitter antenna can you offer?
13cm length cofdm wireless video transmitter antenna
Now we can offer you the smallest transmitter antenna is 13 cm in length.
Remind, please use the bigger or longer antenna if your project allows, it can get better reception performance in the larger range.
Remind, please use the bigger or longer antenna if your project allows, it can get better reception performance in the larger range.
10. What is the default of the full set COFDM-912T you recommended? How about the package for the shipment?
The default full set
- SD Transmitter ( PA 0.5W, 1W, 2W, 5W, 10W, 20W, 50W 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 sucker base antenna, 2. Default U-type clamp FRP fiberglass antenna )
- Optional, parameter configuration board for the wireless video transmitter.
(If you need a magnetic sucker base antenna, the express or carrier thinks the magnetic products will interfere with their plane safety, so the shipping cost is higher than a U-type clamp antenna. )
The default full set package dimension
- 84*21*12CM
- Gross Weight 4.5KG
- If you choose over 100cm antenna and magnetic sucker base antenna, Some freight forwarders will charge extra fees, such as extra long fees and extra fees for strong magnetic items.
11. Can I use the parameter configure board on the receiver to work on the transmitter, I want to adjust the signal attenuation on the transmitter.
parameter configure board tool for transmitter COFDM Wireless Reciever save parameter
- 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.
- The transmitter parameter configures board can adjust the signal attenuation on the transmitter. Per 0.3db will reduce the 0.5W PA.
Here is the transmitter parameter configuration board.
Here is the receiver parameter configuration board.
Question: Is it possible to change the outpout power (internal PA 0,5 w, 1 w, 2 w) via the configuration board?
- As answered above, you can adjust the output power by setting the parameters of ATTEN through the parameter configuration board tool on the transmitter. (This tool does not include the default package, you need to notify that you want to have this tool when you order)
- If you buy 2W PA, then you can set it 0.5W, 1W, but can not change it to 5W.
- We also can make it to 5W, 10W, 20W, and 50W if you need to support long-range.
12. Does your wireless video transmitter support a web camera?
No.
This wireless video transmitter only supports CVBS camera or video input, other type of video camera needs an extra converter box.
13. Can you customize it at 450 - 1300 MHz? Operating frequencies (8 channels) and antennas for them: 477, 610, 675, 724, 816, 970, 1180, 1230 Mhz.
No. It is COFDM (DVB-T) technology.
So the COFDM frequency range is 170-860Mhz. It can support 477, 610, 675, 724, 816Mhz, but can not support 970, 1180, 1230 Mhz.
Our special model transmitter can support all the above ranges, but the receiver needs to use the downconverter block.
In order to allow our wireless transmitting system to support a wider range and better signal strength, we generally set the operating frequency to a certain point (170~860Mhz), and its supported range is only plus or minus 15Mhz. For example, the center frequency is 590Mhz, max support frequency range should be 575Mhz~605Mhz, The PA and antenna are specially customized according to this center frequency.
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
Test PAL and NTSC CVBS composite camera for FPV wireless video transmitter and receiver VTX
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FAQs about Wireless Video Transmitter and Receiver
1. What types of video inputs port does your wireless video transmitter have?
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.
2. What is the transmission distance supported by your wireless video transmitter?
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.
3. What is one-way or two-way? Simples vs half-duplex, full-duplex
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
4. Does your HDMI video transmitter support encryption and receiver decryption?
Most Wireless video transmitters now support AES128 or AES256 bit encryption and decryption, depending on which model you choose. Please contact us to verify.
5. Can the frequency of the wireless video transmitter be modified after ordinary users receive the goods?
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. .
6. I saw that your model is very similar to my needs, but I need to modify one of the parameters, is that possible?
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.
https://ivcan.com/request-a-quote-of-wireless-video-transmission/
7. What should I do if my wireless video receiver shows a weak signal?
- 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.
8. Can I buy modules of the transmitters and amplifiers only? I want to assemble them into my equipment.
We can, of course, supply wireless video transmitter modules and power amplifiers.
For the first sample test, I recommend that you purchase the entire set of products because our engineers have optimized the parameters to achieve the best performance.
After you have completed your test verification, you can remove the case or heat sink, install it in your device, and constantly adjust the parameters to achieve the best performance. In the future, you will be able to purchase only the modules or accessories that you require.
9. Can you take a test video for me to see before shipping?
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.
10. How to test the latency of wireless video transmitters and receivers?
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.
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