Low-latency transmission analog video transmitter (VTX)
A simulated video transmission system designed specifically for first-person perspective applications that demand real-time control and high-speed response. Its millisecond-level latency serves as the technical cornerstone for ensuring immersive experience and precise control.
- Drone Racing (FPV Racing)
- Drone Freestyle Flying (FPV Freestyle)
- High-Speed Unmanned Vehicle and Model Competitions
- Professional Drone Navigation and Reconnaissance
- Millisecond-Level Real-Time Video Feed
- Uninterrupted, Continuous Video without Buffering
- Predictable Performance Even Under Weak Signal Conditions
| project | specifications |
|---|---|
| working voltage : | DC 7-20V |
| working current : | 2.6A@12V |
| operating ambient temperature : | -10~65℃ |
| weight : | 70g (excluding the antenna) |
| outline dimension : | 74mm*38.5mm*24mm |
| Mounting hole position: | 20mm x 20mm spacing, with M2 threaded holes included |
| Number of channels: | 88CH |
| frequency range : | 4900~6100MHz |
| output power : | 25mW ,500mW , 1W,5W,10W |
| control protocol : | IRC Tramp supports OSD parameter adjustment |
| Modulation type: | FM frequency modulation |
| channel bandwidth : | 8MHz |
| Antenna interface: | SMA (external thread with internal hole) |
| Video format: | NTSC/PAL |
| Supports operation across the 4.9G to 6.1G broadband spectrum |
| Button/IRC control for quick CH and power adjustment |
| Special design eliminates antenna connection and power amplifier burnout |
| Automotive-grade RF crystal with temperature range and enhanced frequency stability |
| Fully metal CNC casing with dustproof and explosion-proof features, excellent heat dissipation, and stable power output |
| Fast frequency locking, no interference with peers during startup |
| High-temperature protection: When the product overheats during continuous operation, the image transmission system activates power reduction protection. Once the system reaches the equilibrium point, power output gradually increases to prevent thermal damage from high temperatures. |
| High output power, stable output power, and long transmission distance |
Interface Function Definition
| joggle | functional description |
|---|---|
| GND1,GND2: | The ground wire connects to the GND of the flight control system. |
| RX: |
Image transmission control signal input: Connect to the UART TX interface of devices such as flight control systems, and activate the IRC control protocol to regulate functions including transmission frequency, bandwidth, and power. |
| VTX: | Video input: Connect to the flight control's video output (VTX) |
| VCC: | Connect the DC 7V-20V power input to the positive terminal of the DC-DC buck regulator module, not directly to the flight controller. |
| GND: | Connect the negative terminal of the power input to the negative terminal of the DC-DC buck regulator module. |
| POWER: |
power adjustment button
|
| FRCH: |
Frequency/Channel Adjustment Button
|
| PWR LED: |
Power indicator: Red (flashes to indicate power level)
|
| CH LED: | Channel indicator: Green (indicates channel CH by the number of flashes) |
| FR LED: | Band indicator light: Blue (indicates the number of flashes for the band) |
1, Power and LED status (PWR LED flash count)
| Red LED flashing in a loop | extinct | Always on | Flash once | Flash twice | Flash 3 times | Flash 4 times | Flash 5 times |
|---|---|---|---|---|---|---|---|
| Power level | PIT | Lock button | 25mW | 500mW | 1W | 5W | 10W |
2, Frequency group, channel, and indicator light status (LED flash count)
| Frequency group indicator (blue) FR LED Flashing Indicator |
Channel (MHz) Indicator light (green LED) |
||||||||
|---|---|---|---|---|---|---|---|---|---|
|
CH1 Flash once |
CH2 Flash twice |
CH3 Flash 3 times |
CH4 Flash 4 times |
CH5 Flash 5 times |
CH6 Flash 6 times |
CH7 Flash 7 times |
CH8 Flash 8 times |
||
| LED flash once | Band A | 5856 | 5845 | 5825 | 5805 | 5785 | 5765 | 5745 | 5725 |
| LED flashes twice | Band B | 5733 | 5752 | 5771 | 5790 | 5809 | 5828 | 5847 | 5866 |
| LED flashes 3 times | Band E | 5705 | 5685 | 5665 | 5645 | 5885 | 5905 | 5925 | 5945 |
| LED flashes 4 times | Band F | 5740 | 5760 | 5780 | 5800 | 5820 | 5840 | 5860 | 5880 |
| LED flashes 5 times | Band R | 5658 | 5695 | 5732 | 5769 | 5806 | 5843 | 5880 | 5917 |
| LED flashes 6 times | Band H | 5653 | 5693 | 5733 | 5773 | 5813 | 5853 | 5893 | 5933 |
| LED flashes 7 times | Band L | 5333 | 5373 | 5413 | 5453 | 5493 | 5533 | 5573 | 5613 |
| LED flashes 8 times | Band U | 5325 | 5348 | 5366 | 5384 | 5402 | 5420 | 5438 | 5456 |
| LED flashes 9 times | Band O | 5474 | 5492 | 5510 | 5528 | 5546 | 5564 | 5582 | 5600 |
| LED flashes 10 times | Band X | 4990 | 5020 | 5050 | 5080 | 5110 | 5140 | 5170 | 5200 |
| The LED flashes 11 times. | Band Z | 6002 | 6028 | 6054 | 6080 | 6106 | 6132 | 6158 | 6184 |
3. Installation dimension drawing
If the RX cable is already connected to the transmitter of the flight controller, the buttons will not function.
|
Terminal wire 4P terminal wire, length 200mm ±3mm |
 |
|
power line 2P terminal wire, length 200mm ±3mm |
 |
|
Bamboo stick antenna 5.8G frequency band, with an intermediate connecting cable measuring 140mm ± 3mm |
 |
Shenzhen Fengqing Instrument Co., Ltd.
Crafted in China, Quality Forges Low-Altitude Security.
Upholding a "customer-first" philosophy, Fengqing Instrument is committed to providing professional service throughout the entire product lifecycle:
- Pre-sales Consultation: Customized solution designs and product recommendations based on client needs.
- In-sales Support: Comprehensive technical support for installation, debugging, and operational training.
- After-sales Service: Rapid-response system including remote support and on-site maintenance.
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