FT8/FT4 Browser Decoder

3.0(

2 ratings

)

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

3 out of 5
2 ratings
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Details

Version
1.2.0
Updated
January 11, 2026
Flag concern
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

Manage extensions and learn how they're being used in your organization

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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