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FPV Electronics > VTX & Receiver
The VRX 3.3G Wireless Audio-Video Receiver is designed for high-fidelity reception of 3.3GHz analog video signals in FPV systems. Featuring advanced DSP processing and adaptive signal tracking, it delivers stable video streaming under dynamic RF conditions. The compact receiver supports diversity antenna inputs and automatic channel scanning, making it ideal for drone racing, aerial cinematography, and remote surveillance applications where low-latency video transmission is critical.
| Parameter | Specification |
| Frequency Band | 3.3 GHz ±100MHz Tunable |
| Sensitivity | -98dBm @ 30% Video SNR |
| Video Output | 1.0Vp-p Composite (NTSC/PAL Auto-detect) |
| Audio Output | Mono 600Ω Line Level (6.5MHz Carrier) |
| Input Voltage | 5–12V DC (Micro-USB/2-pin JST) |
| Channel Support | 16 Channels (Auto-scan Capable) |
| Antenna Interfaces | Dual MMCX (Diversity Reception) |
| Video Latency | < 18ms |
| Dimensions | 40×30×10mm |
| Weight | 22g |
| Operating Temperature | -10℃ to +60℃ |
• Adaptive Signal Lock: Automatic frequency correction (±5MHz) compensates for VTX drift.
• Dual-Diversity Reception: MRC (Maximal Ratio Combining) for 8dB SNR improvement in multipath environments.
• OLED Channel Display: Real-time frequency/RSSI monitoring with auto-sleep function.
• Low-Power Operation: <1.2W consumption during active reception.
• Signal Integrity Protection: SAW filtering and EMI-shielded circuitry.
• Video Enhancement: Adjustable brightness/contrast with snow-reduction algorithm.
| RF Condition | Range | Video Quality | Sync Stability |
| Clear LOS | ≤ 1800m | HD Equivalent | 100% Frame Lock |
| Moderate Obstruction | ≤ 650m | Minimal Artifacts | Occasional Tearing |
| Heavy Interference | ≤ 300m | Recoverable Snow | Dynamic Sync Hold |
• 🎥 Real-Time Monitoring
• Drone FPV ground stations
• Live event broadcast systems
• Remote security surveillance
• 🏁 Competitive Racing
• Multi-pilot drone racing
• Time-synchronized lap timing
• Pit lane monitoring systems
• 🔭 Professional Reception
• Search-and-rescue command centers
• Industrial inspection video links
• Wildlife research telemetry
• Thermal Design: Passive cooling via perforated aluminum chassis (5W/K dissipation).
• Overvoltage Protection: Reverse polarity/overvoltage cutoff (9-36V safe range).
• ESD Protection: 8kV contact discharge on all I/O ports.
• Certifications: FCC Part 15/CE-RED compliant (Class B emissions).