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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>JS8Call-Improved — Modern HF Digital Communication</title>
<meta name="description"
content="JS8Call-Improved is an enhanced, community-driven evolution of JS8Call, offering modern HF digital communication tools for amateur radio operators.">
<meta name="robots" content="index, follow">
<meta name="author" content="JS8Call-Improved Team">
<link rel="canonical" href="https://js8call-improved.com/">
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<meta property="og:type" content="website">
<meta property="og:title" content="Modern HF Digital Communication">
<meta property="og:description"
content="An enhanced, community-driven evolution of JS8Call for modern HF digital communication.">
<meta property="og:url" content="https://js8call-improved.com/">
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<link rel="icon" href="/favicon.ico" sizes="any">
<link rel="apple-touch-icon" href="/apple-touch-icon.png">
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<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-sRIl4kxILFvY47J16cr9ZwB07vP4J8+LH7qKQnuqkuIAvNWLzeN8tE5YBujZqJLB" crossorigin="anonymous">
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href="https://fonts.googleapis.com/css2?family=Kode+Mono:wght@400..700&family=Roboto+Slab:wght@100..900&family=Roboto:ital,wght@0,100..900;1,100..900&display=swap"
rel="stylesheet">
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</head>
<body><!-- Background Video -->
<video id="bg-video" autoplay muted loop playsinline>
<source src="img/2K_Tech_Globe_green-slow.mp4" type="video/mp4">
</video>
<div id="video-overlay"></div><!-- Logo -->
<div style="
position: relative;
width:100%;
height:80px;
background-color:#ffffff;
z-index: 1;
display:flex;
align-items:center;
padding:0 24px;
box-sizing:border-box;
">
<h1 style="color: maroon; ">JS8Call</h1>
<!-- Logo goes here -->
<!-- <img src="img/logo.png" alt="JS8Call-Improved Logo" style="height:60px;"> -->
</div>
<div class="navbar navbar-expand-sm">
<div class="container-fluid">
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#menu"
aria-controls="menu" aria-expanded="false" aria-label="Toggle navigation"><span
class="navbar-toggler-icon"></span></button>
<div class="collapse navbar-collapse" id="menu">
<ul class="navbar-nav me-auto mb-2 mb-sm-0">
<li class="nav-item"><a class="nav-link active" aria-current="page" href="./">Home</a></li>
<li class="nav-item"><a class="nav-link" href="./downloads.html">Downloads</a></li>
<li class="nav-item"><a class="nav-link" href="./training.html">Training</a></li>
<li class="nav-item"><a class="nav-link" href="./tools.html">Tools</a></li>
<li class="nav-item"><a class="nav-link" href="JS8Call-improved">Code Resources</a></li>
<li class="nav-item"><a class="nav-link" href="https://groups.google.com/g/js8call-improved">Forum</a></li>
</ul>
</div>
</div>
</div>
<div class="container-fluid p-0" id="hero">
<div class="row justify-content-center">
<div id="welcome" class="col-xs-12 col-sm-10 col-md-8 col-lg-6">
<h1 style="margin-top:0; font-family:'Roboto Slab', serif; color: maroon; font-size:32px;">Welcome to
JS8Call</h1>
<p style="font-size:16px; line-height:1.5;">
JS8Call-Improved is a community-driven evolution of JS8Call, bringing modern features,
active development, and long-term support to HF digital communication. It’s fully
compatible with existing JS8Call versions while adding new capabilities and refinements.
</p>
<h2 style="font-family:'Roboto Slab', serif; font-size:24px; margin-top:24px;">
Latest Version: 3.0.3</h2>
<span class="roboto"><strong>Release Date:</strong> July 12, 2026</span>
<p style="font-size:16px; line-height:1.5;">
Download the latest version of JS8Call today:
<br>
<a href="./downloads.html" style="font-weight:bold; text-decoration:none; color:#0000ee;">Downloads</a>
</p>
<p style="margin-top:16px; font-size:16px;">
Comments, questions, or suggestions? Post to the Discussions list on our repository (requires a GitHub account):
<br>
<a href="https://github.com/orgs/JS8Call-improved/discussions" target="_blank" style="text-decoration:none; color:#0000ee;">
JS8Call GitHub Discussions
</a>
</p>
<p style="margin-top:16px; font-size:16px; line-height:1.5;">
Prefer email? Join our email support list. No Google or GitHub account is required for participation by email. The Forum link is in the menu above
but posting on the web forum requires a Google account. To subscribe to the email list, send a blank email to:
<br>
<a href="mailto:js8call-improved+subscribe@googlegroups.com?subject=Subscribe" style="font-weight:bold; text-decoration:none; color:#0000ee;">
js8call-improved+subscribe@googlegroups.com
</a>
<br>
<span style="font-size:14px; color:maroon; font-weight:bold;">⚠️ NOTE: When you receive Google's confirmation email,
DO NOT click the blue "Join This Group" button, it takes you to the web interface where you can join if you have a Google account.
Instead, simply hit REPLY and SEND on the confirmation email to finalize your request.
</span>
</p>
</div>
</div>
</div>
<div class="container-fluid content-container">
<div class="container">
<div class="row">
<div class="col" id="features">
<img src="img/js8call-app-2025-12.png" class="center-image img-fluid"></a>
<h2>Reliable Weak-Signal Digital Communications for Amateur Radio and Grid-Down Operations</h2>
<p>JS8Call provides robust, keyboard-friendly digital communications over HF radio using the weak-signal JS8
protocol. Designed for emergency communication, grid-down scenarios, off-grid expeditions, and everyday
amateur radio messaging, JS8Call keeps operators connected even when band conditions are poor or power
levels are minimal.</p>
<p>Our enhanced software—maintained by the same contributors behind JS8Call 2.2.0 and now actively
developed—delivers dependable HF communications with global reach. JS8Call is used daily by operators
involved in EMCOMM, preparedness networks, off-grid communication groups, and recreational HF digital
operators who value reliability and resilience.</p>
<p>Built on the proven WSJT-X / FT8 engine and extended for real-time messaging and network-style features,
JS8Call remains fully interoperable with all JS8 stations worldwide.</p>
<hr>
<div class="row">
<div class="col-xs-12 col-lg-7">
<h2>A Smarter Way to Communicate Over HF</h2>
<p>JS8Call is a digital communication suite that brings:</p>
<ul>
<li>Ultra-weak-signal messaging capable of decoding down to –24 dB SNR</li>
<li>Station-to-station chat in real time</li>
<li>Directed and relayed messages, including store-and-forward</li>
<li>Heartbeat and grid monitoring to discover active stations</li>
<li>Automatic acknowledgments and delivery confirmations</li>
<li>Groups messaging, ideal for preparedness and regional nets</li>
<li>Beaconing, APRS-iGate integration, and message forwarding</li>
</ul>
</div>
<div class="col-xs-12 col-lg-5">
<img src="img/pota-image-chatgpt-2025-12.png" class="shadow img-fluid mb-3">
</div>
</div>
<p>JS8Call automatically discovers who can hear you, who they can hear, and how to route messages across HF
paths. The protocol excels at digging signals out of the noise—often succeeding where voice and many
other digital modes fail.</p>
<hr>
<h2>Focused on People, Not Just the Signal</h2>
<p>JS8Call is built to help operators communicate, not fight with settings. The interface emphasizes clarity
and usability:</p>
<ul>
<li>Easy to use</li>
<li>Clean, modernized layout</li>
<li>Customizable message templates</li>
<li>Callsign directory with lookup tools</li>
<li>Configurable heartbeat intervals and auto-responses</li>
<li>Enhanced logging and message history</li>
<li>Tools for off-grid and emergency operations</li>
</ul>
<p>The software gets out of your way so you can focus on connecting with people across hundreds or thousands
of miles—without depending on repeaters, the internet, or external infrastructure.</p>
<hr>
<h2>Intelligent Networking Over HF</h2>
<p>JS8Call uses field-proven digital techniques to establish resilient communication networks across the
ionosphere. Features include:</p>
<ul>
<li>Opportunistic message relaying</li>
<li>Automatic station discovery</li>
<li>Low-bandwidth, high-reliability messaging</li>
<li>Global APRS-IS gateway support</li>
<li>The ability to pass traffic even through shifting band conditions</li>
<li>Robust performance on low power, compromised antennas, and noisy environments</li>
</ul>
<p>With JS8Call, the network forms itself—stations hear each other, exchange heartbeats, and map the HF
environment automatically.</p>
<hr>
<h2>Cross-Platform & Radio-Friendly</h2>
<p>JS8Call runs on:</p>
<ul>
<li>Windows 10/11</li>
<li>Linux (Debian, Ubuntu, Fedora, Arch, Mint and more — for x86_64 and ARM64.)</li>
<li>macOS (Intel & Apple Silicon)</li>
</ul>
<img src="img/os-logos-2025-11-30.png" width="500" class="img-fluid">
<p>The software works with any HF radio capable of USB digital audio including Icom, Yaesu, Kenwood,
Elecraft, Xiegu, and many others.</p>
<p>Ongoing development ensures expanding compatibility, improved CAT control, and better integration with
popular hardware.</p>
<hr>
<h2>Why Choose JS8Call?</h2>
<ul>
<li>Built by active contributors from the original JS8Call 2.2.0 project</li>
<li>Hundreds of bug fixes and stability improvements</li>
<li>New features requested by the community</li>
<li>Fully open, transparent development</li>
<li>100% backward-compatible with all JS8 stations</li>
<li>Designed for preparedness, field operations, and real-world reliability</li>
</ul>
<p>Whether you're supporting emergency networks, preparing for infrastructure loss, or simply enjoying
long-distance digital communication, JS8Call keeps you connected.</p>
<hr>
<h2>Recognition & Awards</h2>
<p>
JS8Call has been recognized by the amateur radio community for its technical innovation and practical
impact on reliable HF digital communication. Designed for real-world conditions where signal strength is
limited and reliability matters, JS8Call has become a trusted tool for operators focused on weak-signal
messaging, situational awareness, and resilient communications.
</p>
<ul>
<li><strong>2020 Dayton Hamvention Technical Achievement Award</strong></li>
<li><strong>2021 Amateur Radio Software Award</strong></li>
</ul>
<p>
Over the years, JS8Call has been embraced by operators worldwide for its reliability, innovation, and
community-focused development. As a modern evolution of the project, JS8Call-Improved builds on that
foundation and has continued to gain recognition across the amateur radio community. Beyond formal
awards, it has been featured in major amateur radio newsletters and forums, reflecting not only
technical excellence but the real-world value it delivers to HF digital communication.
</p>
</div>
</div>
</div>
</div>
<div class="ending-message">
<h1>Get JS8Call Today</h1>
<p>Thousands of people are on the air right now.</p>
</div>
</body>
</html>