10W 20W COFDM HD Transmitter For Two Videos Input Long Range Transmission
Key Features
- COFDM modulation and H.264/H.265 video compression
- Full HD resolution, 1080p/i @60fps
- Supports two channel videos transmission synchronously (optional)
- High security with AES256 encryption
- Modular design with high integration level
- Stable signal transmission in NLOS and high-speed motion
- Adjustable working frequency, bandwidth, bitrate, and radio frequency power
Product Attributes
| Attribute |
Value |
| Wireless modulation |
COFDM |
| Bandwidth |
1MHz~8MHz |
| Transmission power |
10W(40dBm) or 20W(43dBm) |
| Encryption |
AES256 |
| Wireless code stream |
0.5Mbps to 31.67Mbps |
| Video input |
HDMI or CVBS |
Overview
The HCT531 COFDM HD transmitter is designed for use with HD or SD cameras, providing superior miniature wireless video transmission for real-time, high-quality video capture from Point of View Cameras, UAVs, UGV, Body Cams, Concealments, and sport cameras.
Featuring HDMI or AV inputs, this transmitter utilizes COFDM modulation technology and H.264/H.265 encoding to achieve low latency video and audio transmission in high-speed motion and NLOS (non-line of sight) conditions. With power output up to 10W or 20W in a compact metal case weighing less than 910 grams, it delivers long-range, reliable HD wireless video transmission.
Technical Specifications
Input/Output Interface
HD Video Input: HDMI Type-A connector
Composite Video Input: 3.5mm earphone connector
UART Data: YC8-3 connector, TTL3.3V by default (optional RS232)
TTL UART Control: YC8-4 connector, TTL 3.3V
Power in: GX12-2 connector
RF output: TNC female
COFDM Wireless Modulation Transmission
Wireless modulation: COFDM(DVB-T)
IFFT mode: 2K
Wireless bandwidth: 1MHz~8MHz adjustable, 1KHz step forward
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
Wireless code stream: 0.5Mbps to 31.67Mbps (bits per second)
RF
Frequency: Specify central working frequency F0 with band width about F0±15MHz, ranges available from 200~860MHz
Tuning Step Size: 1 KHz
Transmission power: 10W(40dBm) or 20W(43dBm)
Audio and Video Processing
Video input: HDMI or CVBS, auto-detected after system start-up (Optional: two channel video input/encoding/transmit at the same time)
Video formats: 1080@60P, 1080@50P, 1080@30P, 1080@25P, 1080@24P, 1080@60I, 1080@50I, 1080@30I, 720@60P, 720@50P, 720@30P, ... 720*480 60I(NTSC), 720*576 50I(PAL)
Video encoding: H265/H264
Audio input: HDMI embedded audio or analog audio
Audio format: AAC, 16bit, stereo, 32Kbps
Encryption: AES256
Monitoring and Control
Control: Comprehensive transmitter setup with our Parameter Configuration module or PC or other device via Control UART
Temperature Range
Full specification: 0° to +55°C Ambient
Storage: -40° to +80°C
Physical Characteristics
Size: 180*136*38mm (Excludes protruding connectors)
Weight: 906g
Power Requirements
Input range: 24~30VDC (28V as default)
Power Consumption: <2.8A@24V (10W RF power), <3.1A@24V (20W RF Power)
Latency: H265:200~300 ms; H264: 50~130 ms
COFDM Video Transmitter Interface
Frequently Asked Questions
Q1. Does your 10 watts/20 watts COFDM Wireless video transmitter support changing frequency to be 1.2G/1.4G?
The transmitter frequency range is 160MHz~2700MHz, but our COFDM wireless receiver only supports 170~860MHz. For 1.2G or 1.4G applications, we suggest installing a frequency down converter at the receiver end.
Q2. Does the wireless video transmitter support SDI video input?
Yes, we offer different wireless video transmitters supporting HDMI, SDI, CVBS AV, IP Ethernet RJ45 and AHD video inputs. Please specify your preferred video type for appropriate recommendations.
Q3. What's the max distance for the 10W PA transmitter?
For UAV applications, the transmission range is approximately 100km when the UAV drone flies at about 500 meters altitude with receiver antennas positioned as high as possible.
Q4. Does your transmitter and receiver support standard DVB-T protocol?
Yes, it supports three working modes:
- Standard DVB-T protocol (compatible with normal DVB-T receivers, no encryption)
- COFDM protocol (supports TX encryption/RX decryption, H265/H264 encoding)
- COFDM low latency protocol (H264 encoding with low latency, supports TX encryption/RX decryption)
Q5. I want a set of wireless video transmitter and receiver to transmit two channels at the same time, one HDMI video and one audio.
Our COFDM wireless transmitters support simultaneous HDMI and auxiliary CVBS audio/video input. Currently, only one sound source is supported, which can be selected (HDMI or CVBS sound) via our parameter configuration board.
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