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COFDM Series Long-Distance HD Video Transmission Radio - China Factory Supplier for High-Quality Broadcast Solutions
The COFDM series long-distance HD video transmission radio is highly suitable for reconnaissance, public security / fire protection / traffic / emergency rescue, customs border defense / maritime surveillance inspection, real-time broadcast / on-site monitoring, power line inspection / pipeline inspection, plant protection, and other industrial, commercial, and high-end consumer drones (UAVs). It is perfectly designed for high-quality, real-time mobile video transmission in complex environments such as urban areas, seas, and mountains.
Characteristic
Long-distance transmission: 1W/5W radio, with a visible line-of-sight distance of 20 kilometers to 50 kilometers.
Super anti-multipath ability: Designed for complex operating environments, supporting high-speed movement of more than 600 kilometers per hour.
Broadcast/Surveillance HD video encoding: HDMI/HD-SDI/CVBS adaptive, supporting 4K/1080P/1080i/720P/576P resolutions.
Adjustable Bandwidth: 2/4/8MHz adjustable bandwidth, supporting multi-bandwidth, multi-bit rate, and multi-mode options.
Secure Encryption: Multiple encryption algorithms implemented to avoid illegal reception and ensure data privacy.
Small modular design: Extremely compact size, light weight, and easy to integrate and deploy.
Low power consumption: Optimized circuitry for low heat dissipation and reliable long-term operations.
Built-in bidirectional data module: Supports 410-480/840-845/902-928MHz, 1-2W power output, TTL/232/485/422 interfaces, and 3.3-30VDC.
COFDM series-1WT transmitter
Interface: HDMI
Range: 1W (more than 20 kilometers)
Dimension/Weight: 10.8x8.2x2.8cm, 233g
COFDM series-5WT transmitter
Interface: HDMI
Range: 5W (more than 50 kilometers)
Dimension/Weight: 10.8x9.0x2.8cm, 289g
COFDM series-10WT transmitter
Interface: HDMI
Range: 10W (more than 50 kilometers)
Dimension/Weight: 19.6x14.6x3.4cm, 990g
COFDM series-0WR receiver
Dimension/Weight: 13.6x11.7x3.4cm, 425g
COFDM Ground low delay CVBS transmitter
Range: 3W (above 3 km)
Dimension/Weight: 6.7x4.8x2.3cm, 80g
Technical Specifications
| Operating Frequency | 300-350MHz or 560-610MHz (200MHz-2.7GHz can be customized) |
| Transmitting Power | 1W/5W/10W |
| Receiving Sensitivity | -106dBm@2MHz |
| Modulation Coding | QPSK/16QAM/64QAM |
| Rf Bandwidth | 2-8MHz adjustable |
| Transmission Stream | 2-20Mbps adaptive |
| Forward Error Correction | 1/2, 2/3, 3/4, 7/8 |
| Protection Interval | 1/4, 1/8, 1/16, 1/32 |
| Carrier Number | 2K |
| Power Flatness | Less than 0.2db in 10MHz band |
| Shoulder Ratio | When the output power is 27 dB, the band to shoulder ratio is better than -30 dB |
| Second Harmonic | ≤ -65dB |
| Mer | 32dB |
| Transmission Distance | 1W: above 20km; 5W: above 50km; 10W: above 100km (line of sight distance) |
| Video Input | HDMI/SDI/CVBS: 720x480 60I(NTSC), 720x576 50I(PAL), 720 50P, 720 60P, 1080 50I, 1080 60I, 1080 24P, 1080 50P, 1080 60P (CVBS video input N/P adaptive) |
| Video Output | HDMI / RJ45 IP simultaneous output |
| Video Stream | 2-20Mbps (H.264/H.265) |
| Video Input Interface | HDMI/CVBS (Low latency) |
| Video Output Interface | HDMI |
| Video Coding Format | H264+(HDMI) / H.265(CVBS) |
| System Delay | Less than 180ms (CVBS end-to-end low latency less than 120ms) |
| Video Delay | Less than 250ms |
| Encryption Method | 128 bit AES encryption |
| Protection Standard | All aluminum radiator shell, anti-rust, shockproof design |
| Operating Temperature/Voltage | -30℃ ~ +70℃, 11-16V |
| Operating Current | 1W/Receive/5W/10W/CVBS 3W Receive: 1.3A/0.35A/2.8A/5.9A/1.7A @12V |
| Overall Dimension | 1W/Receive/5W/10W/CVBS 3W Repeat: 10.8x8.2x2.8 / 13.6x11.7x3.4 / 10.8x9.0x2.8 / 19.6x14.6x3.4 / 6.7x4.8x2.3cm |
| Weight | 1W/Receive/5W/10W/CVBS 3W Repeat: 233g / 425g / 289g / 990g / 80g |
| Control Interface | Standard RS232 interface, 8-bit data bit, 1-bit stop bit, even-check, baud rate: 19200 |
| Transparent Data Interface | Unidirectional transparent serial port transmission, 8 data bits, 1 stop bit, supports odd check, even check, wireless check, baud rate: 1200 to 230400 |
| Built-In Bidirectional Data Module | 410-480/840-845/902-928MHz, 3.6-19.2kbps conventional / 19.2-230.4kbps frequency hopping, 1-2W, TTL/232/485/422, 3.3-30VDC |
| Power Consumption | ≤ 15W (1W radio), ≤ 35W (5W radio) |
Frequently Asked Questions (FAQ)
What is the maximum transmission range of the COFDM series radio?
The transmission distance varies by power option: the 1W model covers more than 20 kilometers, the 5W model reaches over 50 kilometers, and the 10W system can achieve over 100 kilometers under line-of-sight conditions.
Does the system support high-speed mobile environments?
Yes. Featuring super anti-multipath capability, the COFDM radio supports reliable real-time video transmission during high-speed movement exceeding 600 kilometers per hour.
What video input interfaces and formats are supported?
The system supports adaptive HDMI, HD-SDI, and CVBS inputs. It is compatible with video resolutions ranging from 576P and 720P up to 1080i, 1080P, and 4K.
What is the typical latency of the video transmission?
The overall system delay is less than 180ms, with CVBS end-to-end configuration offering an ultra-low latency of less than 120ms. The standalone video delay is under 250ms.
Is the data transmission secure?
Yes, the transmission is secured using 128-bit AES encryption alongside multiple encryption capabilities to prevent unauthorized or illegal reception.
Can this module be easily integrated into standard drones?
Absolutely. The radio features a lightweight, small modular design (with weights as low as 80g for the CVBS transmitter) and operates with low power consumption and low heat, making it ideal for integration into drones and unmanned aerial vehicles.