HPXGRC 5.8G 1W 64-Bit VTX Instruction Manual

1. Introduction

The HPXGRC 5.8G 1W 64-Bit VTX is a high-power video transmitter designed to provide a stable signal with strong penetration capabilities for FPV (First Person View) drones. This module ensures reliable communication and enhances your flying experience with its robust 1W transmission and 5.8G frequency band. It is compatible with DJI drones and utilizes IRC Tramp protocol for configuration.

2. Specifications

Below are the detailed technical specifications for the HPXGRC VTX 5.8G 1W module:

3. Package Contents

The HPXGRC VTX 5.8G package includes the following items:

• HPXGRC VTX 5.8G module (x1)
• Double plug cord (x1)
• Single plug cord (x1)

4. Installation

Follow these steps for proper physical installation and wiring of your HPXGRC VTX module:

4.1 Wiring Connection

Connect the VTX module to your flight controller using the provided JST cords. Refer to the wiring diagram below for correct pin assignments.

4.2 Important Warnings

• Antenna Installation: Always install the antenna before powering on the VTX. Operating the VTX without an antenna can cause permanent damage to the module.
• Cooling: To prevent overheating, ensure continuous air circulation and maintain a well-ventilated environment around the VTX. If used in a confined space, ensure proper cooling.
• Power Supply: The 3.5V output is exclusively for cameras and cooling fans. Never connect the power input or battery to the 5V output port, as this may damage the aircraft.

5. Software Setup

The HPXGRC VTX uses the IRC Tramp protocol for configuration, typically done through a flight controller's software such as Betaflight. This allows you to set frequency bands, channels, and output power levels.

5.1 Betaflight Configuration (Example)

To configure your VTX in Betaflight, follow these general steps:

1. Connect your flight controller to your computer via USB.
2. Open the Betaflight Configurator.
3. Navigate to the 'Ports' tab.
4. Identify the UART port to which your VTX's TX wire is connected (e.g., UART1, UART2, etc.).
5. Enable 'VTX (IRC Tramp)' for that specific UART port under the 'Peripherals' column.
6. Save and Reboot.
7. Navigate to the 'Video Transmitter' tab.
8. Here you can set your desired frequency band, channel, and power level using the VTX Table.

Note: Do NOT disable MSP on the first serial port unless you know what you are doing. You may have to reflash and erase your configuration if you do.

5.2 VTX Table Settings

The VTX table allows you to define specific power levels for different bands and channels. Common power levels include 25mW, 100mW, 200mW, 400mW, 600mW, 800mW, and 1W. Ensure your selected power level complies with local regulations.

6. Operation

Once installed and configured, the HPXGRC VTX operates by transmitting your FPV camera's video feed on the selected 5.8GHz frequency and power level. The module supports 64 working channels, which can be selected via button settings on the VTX itself or through the IRC Tramp protocol via your flight controller's OSD (On-Screen Display) or Betaflight configurator.

6.1 Channel and Power Selection

• Button Selection: The VTX module features a button for manual selection of channels and power levels. Typically, a short press cycles through channels, while a long press cycles through bands or power levels. Refer to the specific button sequence for your VTX if not using OSD control.
• OSD Control: If configured with IRC Tramp, you can access the VTX settings directly from your FPV goggles/monitor via the flight controller's OSD menu. This allows for convenient adjustment of channels and power without disarming your drone.

7. Troubleshooting

If you encounter issues with your HPXGRC VTX, consider the following troubleshooting steps:

• No Video Signal:
  • Check all wiring connections, especially power and video input from the camera.
  • Ensure the antenna is securely attached to the VTX.
  • Verify that your FPV goggles/receiver are on the correct frequency band and channel.
  • Confirm the VTX is receiving power (check LED indicators if available).
• Poor Video Quality/Interference:
  • Ensure the VTX antenna is not obstructed and is positioned away from other electronics.
  • Try changing to a different channel or band to avoid interference from other devices.
  • Check for proper cooling to prevent thermal throttling, which can degrade signal quality.
  • Inspect the antenna for damage.
• VTX Overheating:
  • Ensure adequate airflow around the VTX module.
  • Reduce the output power if high power is not strictly necessary for your flight environment.
  • Verify that the input voltage is within the specified range (DC 12-52V).
• Cannot Change Settings via OSD:
  • Confirm that IRC Tramp protocol is enabled on the correct UART port in your flight controller software (e.g., Betaflight).
  • Check the wiring of the VTX's TX line to the flight controller's RX pad.

8. User Tips

No specific user tips are available from reviews or Q&A at this time. Always ensure your VTX is properly cooled and the antenna is connected before powering on to prevent damage.

9. Safety and Compliance

9.1 Disclaimer

⚠️ For recreation use only. Illegal modification of drones/planes is prohibited. Please also pay attention to the relevant laws and regulations on the use of drones/planes in your country/area to ensure legal use.

9.2 General Safety Guidelines

• Always operate your FPV drone responsibly and in accordance with local laws and regulations.
• Ensure all connections are secure and insulated to prevent short circuits.
• Keep the VTX away from water and moisture.
• Do not attempt to disassemble or modify the VTX beyond what is described in this manual.

10. Warranty and Support

For warranty information and technical support, please contact the seller or manufacturer directly. Keep your proof of purchase for any warranty claims.