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FPV Electronics > VTX & Receiver
The VTX 3.3G-4W Wireless Audio-Video Transmitter is a high-power analog transmission module operating in the 3.3GHz frequency band. Designed for FPV (First-Person View) drones, RC vehicles, and aerial imaging systems, it delivers robust signal penetration and extended-range transmission in complex environments. With 4W output power and multi-channel support, it ensures low-latency, stable video streaming for real-time applications. The compact form factor and optimized thermal design make it suitable for integration into professional and hobbyist remote-operated platforms:cite[1]:cite[2].
| Parameter | Specification |
| Frequency Band | 3.3 GHz |
| Output Power | 4W (Configurable) |
| Modulation Type | Analog Video Transmission (NTSC/PAL) |
| Channel Support | 16 Channels (CH) |
| Input Voltage | 7–36V DC (Li-Po/Li-ion Compatible) |
| Video Input | 1.0Vp-p Composite Signal (CVBS) |
| Audio Support | Mono Audio Carrier (6.5MHz ±50kHz) |
| Antenna Interface | MMCX or SMA (Reverse Polarity Optional) |
| Dimensions | 36×36×8mm (Standard) |
| Weight | 28g (Excluding Antenna) |
| Operating Temperature | -20℃ to +70℃ |
• Enhanced Signal Penetration: Superior to 2.4GHz/5.8GHz bands in obstructed environments (e.g., urban areas, dense foliage):cite[1].
• Low-Latency Transmission: <20ms end-to-end delay for real-time FPV control:cite[1].
• Multi-Channel Flexibility: 16 switchable channels to avoid interference in group operations:cite[1]:cite[2].
• Compact & Lightweight Design: Minimal impact on drone payload and balance:cite[1].
• Labyrinth Sealing: IP65-equivalent dust/particle resistance for pulley-integrated models:cite[1]:cite[2].
• Auto-Scan Functionality: Rapid channel optimization for interference-free signals:cite[1].
| Condition | Range | Video Quality | Stability |
| Open Field | ≤ 2000m | Clear (SNR >45dB) | High |
| Urban Area | ≤ 800m | Moderate (Dynamic) | Medium (Adaptive) |
| Obstructed Zone | ≤ 300m | Snow-Tolerant | Stable with Drops |
• 🚁 FPV Drones & Aerial Imaging
• Long-range reconnaissance drones
• Cinematic aerial filming
• Search-and-rescue operations
• 🏎️ RC Racing & Ground Vehicles
• Low-latency FPV racing systems
• Real-time telemetry transmission
• 🛰️ Professional Use Cases
• Firefighting/industrial inspection drones:cite[1]
• Agricultural monitoring platforms
• Synchronized multi-drone light shows
• Thermal Management: Aluminum casing acts as heat sink (10W/K dissipation):cite[1].
• Power Protection: Overvoltage/overcurrent cutoff (Auto-recovery <60s).
• Thermal Throttling: Reduces power to 2W @ 75°C; shutdown @ 95°C:cite[1].
• Certifications: FCC Part 15/CE compliant (EMI/RFI shielded design).