Wireless Video Transmitter Receiver
COFDM Wireless Video Transmitter Receiver Transmission HDMI HD 1080P composite CVBS in H.264 COFDM-904T
Table of Contents
Selling Points
1W RF output; (default)
HDMI 1080P (Video+Audio), SD 720P composite CVBS in
H.264/MPEG-2;
Delay <300 Millisecond;
Test Video
10Km test video，from Drone air transmitter，to ground receiver. please check below link:
https://www.dropbox.com/s/rgmsnpnsrygc8fu/COFDM-904T-10Km-test-video.mts
Specification
| Product name | High-definition map transmission transmitter |
| Product number | COFDM-904T |
| Working frequency | 300MHz ~ 900MHz can be customized |
| Antenna interface | 50Ω SMA M or MMCX F |
| Modulation mode | COFDM （QPSK、16QAM、64QAM） |
| Video bit rate | 2~10MHz |
| Working bandwidth | 6MHz，8MHz |
| Delay | < 300 Millisecond |
| Compression format | H．264 |
| Image clarity | 1080P @60/50/30(backward compatible) |
| Operating Voltage | DC9 ~ 28V |
| Power consumption | ≤8W @ standard power 500mW |
| weight | ≤100g |
| Product Size | 80 * 65 * 20mm |
FAQ
| Question: Can you make some changes for me? |
| Answer: Yes, please send your requirement to us, we have professional engineers and we are happy to offer you any further customized. |
| Question: Any chance to change to 2 or 5 GHz band? |
| Answer: Now our Transmitter frequency supports from 170~1500Mhz. |
| Question: COFDM-904T has HDMI input? |
| Answer: Yes, COFDM-904T has HDMI and CVBS input. It supports the GoPro camera. |
| Question: COFDM-904T is only 4 Channels? |
| Answer: COFDM-904T default has 4 frequencies (503Mhz, 509Mhz, 515Mhz and 521Mhz), if you need different or more, we will edit our software to do (170~900Mhz), Just send us your requirement details to us. |
| Question: What about the data rate? Support 8M-10Mbps? |
| Answer: Default is 3M, we also can support 8-10Mbps if adjust the parameter. |
| Question: Can I set it manually by me? |
| Answer: It is better to pre-set in the factory and test passed before delivery. If need, we can also tell you the solution to change frequency. |
| Question: I need COFDM-904T work on 1080i 50 at least at 8-10Mbps |
| Answer: It is no problem. |
| Question: Can I set manually all the parameters by myself? |
| Answer: If you add PA (booster), then you can not; If you don’t need PA (booster), then you can (PA is hardware, if you change the setting, hardware should be adjustable) |
| Question: Which is the max frequency value we can set? |
| Answer: 900Mhz, Need higher, please choose COFDM-907T |
| Question: If the band range is 300-900 I will tell you exactly 4 ones in between to set for me, then I will need constant data rate at 10 Mbps, modulation at 16QAM, FEC at 1/2 and Guard Interval at 1/32. Encoding at 4.2.2 if possible instead of 4.2.0, 200 Meters (NLOS) Non-Line Of Sight and 500 Meters (LOS) Line Of Sight. RF power at 500 mW, remember, data rate MUST be fixed (not variable) at 10 Mbps, try this setting and let me know how it works (better if you can forward me a short video directly recorded from the HDMI output of the receiver – NOT SHOOTING A MONITOR SCREEN! At least we need 27dbm |
| Answer: OK, we can do the above sample if you confirmed. |
| Question: Do you have any device, I can get a video on my computer? |
| Answer: Yes, please check another page. COFDM Video Data Transmitter Receiver. |
| Question: How to change the frequency at the receiver? |
Answer: Please check the below operation at the receiver. |
| Question: How long the distance does it support if I use the only ground. |
| Answer: 1000 meters at the light of sight, and 500 meters at non-light of sight. It will support longer if your transmitter or receiver will be located higher, like on the roof of the building, tower or mountain. |
Do you have any question, please click here to ask a question.
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Tony –
The COFDM-904T is a highly capable device that seamlessly handles both standard definition analog video input (CVBS) and high definition digital video input (HDMI 1080p), making it exceptionally versatile for various applications. Our tests, conducted in both urban and rural settings, demonstrated that the H.264 encoding consistently maintained crisp video quality with negligible latency. For those who utilize a hybrid AV setup, this product is an absolute necessity and should not be overlooked.
Kartik –
Video Transmitter COFDM 904T Channel Power 6Mhz Bandwidth 27.8dbm
