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title: Runcam WifiLink VRX Setup Guide description: Step-by-step guide for configuring the Runcam WifiLink VRX: connection, WebUI, channels, DVR, and RSSI monitoring

VRX Configuration Guide

Attention

Do not power on the VRx if the HDMI cable is connected and the HDMI source is turned off — this may damage the HDMI output!

  1. Connect DC 9–30V power and a miniHDMI-to-HDMI cable to your goggles or headset.
  2. Use the HID joystick to configure the link channel (default is 161 → 5.8 GHz).
  3. Power on the drone and VRX. By default, both are set to channel 161 and resolution 1920×1080 — the image should appear within 10 seconds.


💡 That's it! You're ready to fly digital with OpenIPC.

Additional Runcam VRX Settings

1. Accessing the WebUI

To change VRX resolution (FullHD or HD), enter AP Mode (Wi-Fi Access Point mode):
Hold the VRX joystick until you see "AP mode ON" on screen.

📶 A Wi-Fi network will appear: RadxaGroundStation
🔑 Password: radxaopenipc

Then open a browser and go to:

http://radxa-zero3.local/

In the WebUI you can:
• change communication channels
• download or view DVR footage
• configure Adaptive Link
• select video resolution
• monitor the RSSI graph

2. Main WebUI Features

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  • DVR
  • VRX Settings
  • Camera Settings
  • RSSI Graph (available when there's a link between VRX and Air Unit)

3. Setting Resolution

Navigate to Groundstation Editor → Screen-mode → Edit
Set the resolution, for example: 1280×720 — it must match the Air Unit settings.

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4. Setting Communication Channel

Go to Groundstation Editor → wifibroadcast.cfg → Edit
Set a different communication channel (e.g., 140, 64, etc.) —
it must match the channel on the Air Unit.

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📡 5.8 GHz Communication Channel Table (20 MHz)

№ каналу Частота (MHz) Примітка
365180Wi-Fi
405200Wi-Fi
445220Wi-Fi
485240Wi-Fi
525260DFS
565280DFS
605300DFS
645320DFS
1005500DFS
1045520DFS
1085540DFS
1125560DFS
1165580DFS
1205600DFS
1245620DFS
1285640DFS
1325660DFS
1365680DFS
1405700DFS
1445720DFS
1495745Without DFS (usually allowed)
1535765Without DFS
1575785Without DFS
1615805Most popular
1655825Without DFS
1695845Non-standard
1735865Non-standard
1775885Non-standard

❗ What is DFS (Dynamic Frequency Selection):
DFS allows Wi-Fi or FPV devices to operate on frequencies that may overlap with radar systems (e.g., military or weather).
If radar activity is detected, the device will automatically switch to another channel.

5. Camera (Air Unit) Configuration

Navigate to:
Camera Settings → Load Current Config

  • Wait for the camera settings to load
  • Make necessary changes
  • Save
  • Reboot Majestic

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6. RSSI Graph

The RSSI graph shows real-time signal strength and link quality.
This helps evaluate antenna placement and link stability.

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7. DVR

Download or delete your flight recordings.

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8. Connecting Radxa to a Home Network

Required Software

  1. Win32 Disk Imager
  2. SD Memory Card Formatter
  3. PuTTY (SSH)
  4. WinSCP (FTP)

Initial Radxa Setup

  1. Write the Radxa image (version 1.9.9) to a microSD card using Win32 Disk Imager.
  2. Insert the card, connect a keyboard and monitor, and power off the Wi-Fi module (⚠️important).
  3. Power on the board, log in via SSH (root/root).
  4. Use nmtui to connect to your home Wi-Fi → reboot.
  5. (Optional) AP Mode → access WebUI at radxa-zero3.local.

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Runcam WiFiLink v1/v2 Camera Setup

  1. Connect the network cable to the router or PC (IP 192.168.1.10).
  2. Launch OpenIPC Configurator → Connect → select your camera.
  3. Camera: set resolution (1920×1080 or 1280×720) → Bitrate (e.g. 12,228 kbps; with Alink – auto)
  4. Telemetry: enable UART0 + Mavlink → restart
  5. Firmware: update firmware → Update
  6. Advanced: enable Alink → check logs