CAT (Computer Aided Transceiver) Control allows World Radio League to communicate directly with your radio — enabling automated frequency tracking, live S-meter readings, and smoother logging. With CAT Control enabled, your logger stays synchronized with your radio in real time.
This guide walks you through setting up CAT Control using the World Radio League desktop application.
Requirements #
Before you begin, make sure you have:
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Installed the WRL CAT Control application
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A compatible radio with CAT support
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A USB or serial cable connecting your radio to your computer
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Your World Radio League login credentials
Step-by-Step Setup #
1. Launch CAT Control #
Open the CAT Control app on your computer.
2. Sign In #
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Click the Sign In button.
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A browser popup will appear — authorize with your World Radio League account.
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The app will redirect you back automatically, confirming you’re signed in.
3. Connect to Your Radio #
Click the Settings (gear icon) and configure your connection:
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Radio Model: Select your radio from the dropdown list.
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Serial Port: Choose the port your radio is connected to (e.g., COM3, /dev/ttyUSB0).
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Baud Rate: Match your radio’s CAT baud rate setting.
Once everything is set, click Start Connection.
A confirmation popup will appear once your radio is successfully connected.
Features Once Connected #
Live Frequency Sync #
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When you adjust the dial on your radio, the frequency in WRL logging updates automatically.
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You can also change frequency from the app, and your radio will respond in real time.
Dual VFO Support #
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If your radio supports dual VFOs, you’ll see both active frequencies displayed within the CAT Control interface.
S-Meter Readings #
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The S-Meter display shows real-time signal strength.
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You’ll see the needle rise and fall as your radio receives transmissions — helpful for verifying reception and tuning during operation.
Example: FT8 Monitoring #
Let’s say you tune your radio to 14.074 MHz, a common FT8 frequency:
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CAT Control reflects the frequency instantly in your logbook.
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The S-meter will begin to show activity as FT8 signals are received.
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When the band is quiet, the needle drops accordingly — a great visual indicator of live reception.
Summary #
With just a few clicks, CAT Control links your radio and World Radio League for seamless logging and real-time frequency tracking. It’s ideal for digital modes, contesting, and casual operating alike.