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World Radio League

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User Guide: Connecting WSJT-X with Your World Radio League Account #

This guide walks you through setting up WSJT-X so that it streams your contacts directly into your World Radio League logbook.

1. Sign Into World Radio League #

  • Open World Radio League and log into your account.

  • Keep this window open while you configure WSJT-X.

2. Open WSJT-X and Preferences #

  1. Launch WSJT-X on your computer.

  2. Navigate to Settings / Preferences.

  3. Connect WSJT-X to your radio.

    • ⚠️ Important: WSJT-X should remain the only application connected directly to your radio, unless you are using a virtual port software.

3. Copy UDP Server Port #

  1. Inside the Reporting tab of WSJT-X, locate the UDP Server Port number.

  2. Copy this number — you’ll need it in the next step.

  3. Click OK to close preferences.

4. Configure World Radio League CAT Control App #

  1. Open the World Radio League CAT Control App.

  2. Go into Settings.

  3. Under UDP Port, paste the port number you copied from WSJT-X (if different from the default).

  4. Choose the World Radio League logbook you want to send contacts to.

  5. Click Start Listening.

    • ✅ Do not connect the World Radio League Control app to your radio — it should only stream contacts from WSJT-X.

  6. Leave the app running in the background (you may minimize it).

5. Make and Log Contacts #

  1. Operate WSJT-X in your chosen mode (e.g., FT4 on 20m).

  2. When you complete a contact, confirm by clicking OK in the WSJT-X logging window.

  3. Open your World Radio League Logbooks section.

  4. Locate the logbook you selected earlier — your contact will appear there automatically.

6. Understanding Mode Logging #

  • You may notice FT4 contacts logged as MFSK.

  • This is expected:

    • FT4 is a sub-mode of MFSK.

    • Many logging programs (including World Radio League) use MFSK as the universal standard to ensure compatibility.

Quick Tips #

  • Always keep WSJT-X as the primary link to your radio, unless using a virtual port software.

  • Run the World Radio League CAT Control app in the background for logging.

  • Double-check UDP port settings if logs are not appearing.

Still stuck? Send us a message in the community here or use the Report a Bug button in the app and our team will help!

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