AES256 Encryption COFDM Wireless Signal Transmitter With Light Weight
AES256 Encryption COFDM Wireless Signal Transmitter With Light Weight
Key Features
- COFDM modulation technology with -level data security
- Low latency H265/H264 video encoding supporting up to 1080P/I @60fps
- AES256 encryption for secure communications
- Supports high-speed mobile transmission up to 800km/h
- Ideal for NLOS video downlink transmission
- Real-time video capture and encoding
Overview
The HC-T820 COFDM wireless signal transmitter features built-in h.265 encoder board, COFDM modulator module, and mini power amplifier. Encased in CNC aluminum alloy, it offers compact dimensions (104.5×50×27mm), lightweight design (under 140g), high resolution, and long transmission range.
Technical Specifications
| Interface |
Details |
| HD video input |
Standard HDMI interface |
| SD video input |
4PIN 1.5mm pitch connector (CVBS Analog Audio Video Input) |
| Data transmission |
3PIN 1.5mm pitch connector (default TTL3.3V, RS232 optional) |
| Configuration port |
4PIN 1.5mm pitch connector, TTL3.3V for Parameter Configure Board or PC connection |
| Power input |
XT30PW-M connector (12V Power Supply) |
| Antenna port |
SMA male connector |
COFDM Wireless Modulation Transmission
| Product name |
AES256 Encryption COFDM Wireless Signal Transmitter With Light Weight |
| Model number |
HCT820 |
| Wireless modulation |
COFDM |
| IFFT mode |
2K |
| Wireless bandwidth |
1MHz~8MHz adjustable (1KHz step) |
| FEC options |
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 |
| Frequency range |
300~860MHz (customizable with 1KHz step) |
| Transmission power |
1W (30dBm) or 2.5W (34dBm) standard (10W/20W optional) |
Audio and Video Processing
| Video input |
Single-channel HD/SD (auto-detected, HDMI preferred) or optional dual input |
| Supported formats |
1080@60P/50P/30P/25P/24P/60I/50I/30I, 720@60P/50P/30P, 720×480 60I (NTSC), 720×576 50I (PAL) |
| Video encoding |
H265/H264 |
| Audio input |
HDMI embedded or analog |
| Audio format |
AAC, 16bit, stereo, 32Kbps |
| Encryption |
AES256 |
| Dimensions |
104.5×50×27mm (excluding connectors) |
| Weight |
<140g |
| Power consumption |
1W PA: <15W, 2.5W PA: <23W (12V DC, 11~13V) |
| Latency |
H265: 200~300ms; H264: 50~130ms |
COFDM Wireless Signal Transmitter Interface
Frequently Asked Questions
Q1. Does your COFDM wireless signal transmitter support changing frequency?
The transmitter frequency can be 160MHz~2700MHz, but our COFDM wireless receiver only supports 170~860MHz. You can specify a center frequency point, then our RF power amplifier will normally be made to operate within a frequency range of center frequency ±15MHz. For frequencies 860MHz~2700MHz, a frequency down converter is required at the receiver end.
Q2. Does this COFDM wireless signal transmitter support SDI video input?
Yes, our COFDM transmitter supports HDMI, SDI, CVBS AV, IP Ethernet RJ45 and AHD video input. Please specify your preferred input when ordering.
Q3. What's the max distance for the COFDM transmitter with 2.5W PA power amplifier?
For UAV/Drone applications, the LOS transmission range is about 50km when the UAV is at approximately 300 meters altitude, with receiver antennas installed as high as possible.
Q4. Does your VTX and RX support standard DVB-T protocol?
Yes, it supports three working modes:
1. Standard DVB-T protocol (no encryption)
2. COFDM protocol with encryption/decryption (H265/H264)
3. COFDM low latency protocol (H264 with encryption/decryption)
Q5. Can the COFDM transmitter handle simultaneous HDMI video and audio transmission?
Our wireless COFDM transmitter supports one HDMI and one auxiliary CVBS audio/video input simultaneously. Currently, it supports one sound source (selectable between HDMI or CVBS via parameter configuration board).
