Item logo image for FT8/FT4 Browser Decoder

FT8/FT4 Browser Decoder

3.0(

2 ratings

)
ExtensionTools29 users
Item media 1 (screenshot) for FT8/FT4 Browser Decoder

Overview

Decode FT8 and FT4 amateur radio signals from browser audio in real-time

FT8/FT4 Browser Decoder decodes FT8 and FT4 directly from browser tab audio. FEATURES: • Real-time FT8 and FT4 decoding using WebAssembly • Waterfall spectrum display (200-3000 Hz) • Automatic time synchronization • CSV export of decoded messages • CQ message filter USAGE: 1. Open a WebSDR (websdr.org, kiwisdr.com, etc.) 2. Tune to an FT8/FT4 frequency: - FT8: 7.074, 10.136, 14.074 MHz USB - FT4: 7.0475, 10.140, 14.080 MHz USB 3. Click the extension icon 4. Click Start DETAILS: • Sample rate: 12000 Hz • Slot time: 15s (FT8) / 7s (FT4) • Decoder: ft8js WASM library PRIVACY: • No data collection • No external servers • No tracking or analytics • All processing happens locally in your browser OPEN SOURCE: MIT License - Contributions welcome https://github.com/Transwarp8/ChromeFT8

Details

  • Version
    1.2.0
  • Updated
    January 11, 2026
  • Size
    693KiB
  • Languages
    English
  • Developer
    Email
    klostreichjacob@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
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