1. Important Safety Information
- Antenna Connection: Always ensure the antenna is reliably connected to the Video Transmitter (VTX) before powering on. Operating the VTX without an antenna can cause permanent damage.
- Heat Generation: VTX units generate heat during operation, especially at higher power settings. This is normal. Avoid touching the VTX with bare hands to prevent burns. Ensure adequate ventilation and proper placement away from flight control systems. The heat dissipation module should face upwards for optimal cooling.
- 2.4G Remote Control Interference: When using a 2.4G remote control, some models may interfere with the 5.8G video signal. To mitigate this, select a higher frequency band (e.g., 5945MHz) for the VTX or maintain a distance of at least 30 meters between the video receiver and the 2.4G remote control.
2. Product Overview
2.1 B-CUBE 5.8G Video Transmitters (VTX)
The B-CUBE series of 5.8G Video Transmitters are designed for FPV (First Person View) applications in RC airplanes and drones, offering various power outputs for different range requirements.
2.2 MINI MS-1672 FPV Camera
The MINI MS-1672 FPV Camera provides high-definition video for your FPV setup, featuring a wide-angle lens and adjustable video formats.
2.3 5.8G OTG Receiver
The 5.8G OTG Receiver allows you to view FPV video feeds directly on your Android smartphone, tablet, or PC, offering portability and convenience.
3. Setup and Installation
3.1 VTX Wiring Diagrams
Connect the VTX to your flight controller according to the diagrams below. Ensure correct voltage input and signal connections.
3.2 VTX Installation
- Mounting: The VTX units have a boundary dimension of 36 x 36mm with screw holes at 30.5 x 30.5mm and a screw aperture of 3mm. Use the provided shock-absorbing balls and fixed nylon columns for secure mounting.
- Heat Dissipation: Position the VTX away from the flight controller and in a well-ventilated area on the aircraft. Ensure the heat dissipation module faces upwards to allow for continuous heat dissipation.
3.3 OTG Receiver Setup
The OTG Receiver can be used with Android smartphones/tablets or a PC.
For Android Devices:
- Download the APK app from: https://github.com/BCUBE-RC/VTX-OTG/
- Connect the OTG receiver to your Android smartphone or tablet using the provided Type-C OTG cable.
- Ensure your smartphone's OTG function is enabled if required.
For PC:
- Connect the OTG receiver to your PC using a USB cable.
- On Windows XP, open the camera application. On Windows 7, install AMCP camera software. On Windows 10, open the built-in camera application or use MP groundstation software.
For AV Output:
- Use a 4P cable (DIY required) for 5V power input and AV output.
4. Operating Instructions
4.1 VTX Manual Adjustment (Button Control)
The VTX units support manual adjustment of channel, group, and power using the onboard button.
- Adjust Channel: Short press the button. The blue LED will flash 1-8 times, corresponding to channels 1-8.
- Adjust Group (Band): Long press the button for 2 seconds. The green LED will flash, indicating groups A, B, E, F, R (5 times in total).
- Adjust Power: Long press the button for 5 seconds. The red LED will flash, indicating power levels (5 times in total).
- Unlock Prohibited USA Channels: Long press the button for more than 10 seconds to enable 11 prohibited USA channels. Default settings do not output these channels.
4.2 VTX OSD Parameter Adjustment (IRC Protocol)
The VTX units support IRC protocol for OSD (On-Screen Display) parameter adjustment, typically configured via Betaflight or similar flight controller software.
Download the VTX table files for your specific VTX model:
- VTX800: https://github.com/BCUBE-RC/VTX800/archive/refs/tags/v1.0.zip
- VTX1000: https://blog.rctoysky.com/invoice/invoice/VTX1000mW.json
- VTX1600/VTX2500: https://github.com/BCUBE-RC/VTX/archive/refs/tags/vtx1600.zip
4.3 OTG Receiver Operation
After connecting the OTG receiver to your device (smartphone/tablet/PC) and powering it on, long press the menu button for 3 seconds. The receiver will automatically self-search for frequencies and lock onto the strongest signal.
5. Specifications
5.1 B-CUBE VTX Series
| Feature | VTX800 | VTX1000 | VTX1600 | VTX2500 |
|---|---|---|---|---|
| Model | VTX800 | VTX1000 | VTX1600 | VTX2500 |
| Frequency | 5645-5945MHZ | |||
| Input Voltage | 7-26V | |||
| Output Voltage | 5V/1A | |||
| Channels | 40CH | |||
| Transmission Power | PIT/25MW/200/400/800/1600MW (VTX800, VTX1000, VTX1600) PIT/25MW/200/400/800/1600/2500MW (VTX2500) | |||
| Boundary Dimension | 36 x 36MM | |||
| Screw Hole | 30.5 x 30.5MM | |||
| Screw Aperture | 3MM | |||
| Weight | 7.3g | |||
| Antenna Connector | MMCX | |||
| Control Protocol | IRC Tramp | |||
| Video Format | PAL/NTSC | |||
| Working Temperature | -25°C ~ -105°C | |||
5.2 MINI MS-1672 FPV Camera
| Feature | Specification |
|---|---|
| Model | MINI MS-1672 FPV cameras |
| Sensor | 1/1/8 "CMOS D1080H |
| Horizontal Resolution | 2000TVL |
| Horizontal Field of View | 165° |
| Lens | 2.1mm lens |
| Video Format | NTSC & PAL (adjustable) |
| Image Scale | 4:3 & 16:9 (automatic recognition) |
| Wide Dynamic Range | Super WDR |
| Noise Reduction | 3DNR |
| Low Illumination | 0.001LUX |
| Video Output | CVBS |
| Day and Night Mode | External/Internal/Black and White/Color |
| Electronic Shutter | PAL: 1/50-100000, NTSC: 1/60-100000 |
| Wide Voltage Input | 5-36V |
| Working Temperature | -20°C ~ 60°C |
| Weight | 110g |
| Dimensions | 19 x 19 x 19mm |
| Resolution | 960 x 1080 |
5.3 5.8G OTG Receiver
| Feature | Specification |
|---|---|
| Frequency | 5645MHz-5945MHz |
| Resolution | 640 x 480 30fps |
| Working Current | USB 5V 190mA |
| Connector | RP-SMA Male |
| USB Interface | Type-C |
| Working Temperature | -10°C ~ 65°C |
| Size | 50MM x 30MM |
| Weight | 26g |
6. Maintenance
- Cleaning: Keep all components clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Storage: Store the VTX, camera, and receiver in a dry, cool environment away from direct sunlight and extreme temperatures.
- Antenna Care: Always handle antennas with care. Ensure they are not bent or damaged, as this can affect signal quality.
- Firmware Updates: Periodically check the manufacturer's website for any available firmware updates for your VTX or camera to ensure optimal performance and access to new features.
7. Troubleshooting
- No Video Signal:
- Check all wiring connections between the VTX, camera, and flight controller.
- Ensure the VTX antenna is securely connected.
- Verify that the VTX and receiver are on the same frequency and band.
- Confirm the VTX is receiving adequate power (7-26V input).
- Flickering or Short Distance with OTG Receiver:
- Perform calibration in an open area, maintaining at least 30 meters between the receiver and transmitter. Indoor reflections can cause inaccurate frequency detection.
- Ensure the OTG function is enabled on your Android smartphone/tablet.
- Avoid operating near strong electromagnetic interference sources.
- VTX Overheating:
- Ensure the VTX is in a well-ventilated area and the heat dissipation module is facing upwards.
- Consider reducing the transmission power if high temperatures persist and long range is not critical.
- OTG Receiver Not Working with iOS Devices: The 5.8G OTG Receiver does not support iOS systems. It is designed for Android smartphones/tablets and PCs.
8. User Tips
- For optimal long-term performance, it is recommended to operate the VTX800 at 800MW, even though it supports up to 1600MW.
- When using the OTG receiver, if you experience signal issues, try using the auto-search frequency function by long-pressing the menu button for 3 seconds after power-on.
- Always double-check your wiring before applying power to prevent damage to your components.
- Keep the VTX and receiver physically separated from other electronic components, especially 2.4G radio equipment, to minimize interference.
9. Warranty and Support
For warranty claims, technical support, or further assistance, please contact your retailer or the manufacturer directly. Keep your proof of purchase for any warranty-related inquiries.
