⚠️ Public Beta · ver-0.9.8 ⚠️

What is Web-FT8?

Web-FT8 is a modern, standalone web application engineered to decode and encode FT8 and FT4 weak-signal digital mode communications directly inside standard web browsers without requiring complex desktop installations like WSJT-X for quick operations.

Built specifically for amateur radio operators, it combines a high-performance WebAudio waterfall spectrum analyzer, client-side WebAssembly (Wasm) signal processing, Rig CAT control via Web Serial, and direct cloud logging integrations like QRZ.com.

WebFT8 Features & Capabilities

• Browser-Native FT8 / FT4 Engine: Real-time FT8 and FT4 decoding and encoding directly in the browser using Web Audio APIs, with a one-click mode toggle, and without requiring external audio routing software.
• Interactive Spectrum & Waterfall: Real-time 0–3 kHz FFT waterfall display with custom controls for contrast, brightness, noise floor filtering, and scroll speed.
• Multi-Band Bandstacking: Quick frequency switching across all 10 primary HF & VHF ham bands (160m through 6m).
• Automated QSO Management & Auto-Seq:
  • TX/RX sequence timer with Even/Odd slot tracking (15-second slots in FT8, 7.5-second slots in FT4).
  • Smart Auto-Sequencing to step through standard FT8/FT4 QSO exchanges.
  • Call 1st CQ automated queueing and response capability.
  • Dedicated Waiting QSO Queue to track incoming callers while engaged in active QSOs.
• Rig CAT Control (Web Serial API):
  • Direct transceiver control via Web Serial for Icom (CI-V), Kenwood, Elecraft, Yaesu (modern/legacy), and FlexRadio / PowerSDR.
  • Flexible PTT keying options including CAT commands, hardware RTS, or DTR signals.
  • Real-time frequency querying, setting, and hardware status probing.
• Enhanced Visual Decode Highlighting:
  • Dedicated color coding for messages targeting your callsign.
  • Automatic highlight identification for POTA (Parks on the Air) stations.
  • Worked-Station indicator highlighting previously logged calls.
  • Custom Ignore List to skip specific stations during auto-call procedures.
• Integrated Logbook & QRZ Sync:
  • Built-in logbook table with local storage retention and manual entry/editing modal.
  • Direct, one-click QRZ.com Logbook API Upload.
  • Full ADIF export capability for seamless backup to standard logging tools.
• Interactive QSO Map:
  • QSO map displaying station location and logged contact grid squares.
  • Great-circle path plotting with distance calculations in Miles or Kilometers.
• Time Sync Checker: Built-in network UTC check tool to verify system clock accuracy within FT8 window tolerance.
• In-App Support Tools: One-click Bug Report submission, a running Changelog, and a linked setup Instructions guide, all accessible from the main app header.

Operator Access

No login required. Launch the web app directly into your browser to begin monitoring and operating FT8/FT4.

Check Out My Other Project

QSO PRO is an intuitive mobile (Android) contact logger and rig control solution built for amateur radio operators in the field, featuring fast logging, live spotting, and seamless rig connectivity.

⚡ Features:

• Hands-Free FT8 UDP Ingest: Auto-logs contacts directly from WSJT-X over Wi-Fi
• Live CAT Control: Real-time frequency & mode sync for Icom, Xiegu G90/DE-19, Yaesu, Elecraft & Kenwood
• Live Spots & 1-Tap QSY: POTA, SOTA, WWFF, IOTA, BOTA, LLOTA, TOTA & DX Cluster
• 1-Tap Cloud Sync: QRZ.com, ARRL LoTW, Club Log, World Radio League (WRL) & TOTA

For more information about QSO PRO, visit: qsoprologger.com

System Requirements & Setup

• Supported Browsers: Chromium-based browsers (Google Chrome, Microsoft Edge, Opera) running on HTTPS or localhost are required for Web Serial CAT support and audio permissions.
• Audio Setup: Connect your transceiver audio output into your computer line-in/USB sound card and grant microphone permissions when prompted.
• UTC Time Sync: Precise time synchronization (accurate within ±200ms) is critical for FT8 decoding. Use the built-in UTC sync tool to verify clock accuracy.

Quick Start Guide

• Step 1: Launch the app and enter your Callsign and Grid square in the top bar.
• Step 2: Grant audio device permissions and select your transceiver audio input and output devices.
• Step 3: Connect your radio via Web Serial for CAT rig control to manage PTT and frequency switching.
• Step 4: Tune to your desired band, choose FT8 or FT4 mode, and click Start RX.

Amateur Radio Community & Field Support

Web-FT8 was built to advance lightweight, zero-install digital operations across the ham radio community. Whether you're operating portable for Parks on the Air (POTA), running a Field Day station, or operating remotely from a laptop, Web-FT8 makes FT8 accessible without bulky software setups.

Designed with open web standards and browser-native technology, Web-FT8 aims to empower operators with fast, zero-dependency tools built to make FT8 quick to deploy and easy to use.