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

0 out of 5
No ratings
Learn more about results and reviews.

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

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

HLS Player - m3u8 Streaming Player

4.4

HLS Player - m3u8 HTTP Live Streaming (HLS) Player

IPTV Player - Player for HLS, M3U8, MP4, DASH and TS Streams

4.0

Play IPTV Live streams like HLS, M3U8, MP4, DASH and TS directly on your browser

Radio 4YOU

4.9

Radio 4YOU - Online EDM Radio

QR Scan Pro

2.3

Most practical QR code reader in the market

Live Stream Downloader

4.3

Detect and Download M3U8 HLS Streams (HTTP Live Stream) in multiple threads to your local disk

QR Code Scanner - Free Barcode Reader

0.0

Scan QR codes and read barcodes effortlessly with our Free QR Code Scanner and Barcode Reader!

WiFi QR Code Generator

5.0

Generate QR codes for WiFi networks securely in your browser

Speech Translator

4.0

Translate any video, audio or livestream in real-time.

Twitch Radio Mode

4.0

Enables radio mode in Chrome web browser

LeetCode Timer

4.4

Leetcode timer and performance tracking

QR Code Reader

3.7

A chrome extension for reading QR code from webpage

Audio Analyser Extension

4.8

Analyses the audio of the current tab and draws the audio frequencies on a canvas.