Improved version of the original JS8Call software for JS8 digital mode weak signal keyboard-to-keyboard messaging for ham radio.
Publisher’s description
What is JS8Call-improved?
JS8Call-improved by Ham Radio is open-source Windows software. It is written in C++.
Installation and requirements
The publisher provides EXE (Inno Setup) installers for 64-bit Windows. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 3.0.3, released on July 13, 2026. The version history goes back to November 4, 2025: 7 releases, all linked to the official files.
Popularity and file types
The source code on GitHub (JS8Call-improved/JS8Call-improved) has 90 stars.
Project description on GitHub: “Active development HEAD for the JS8Call project”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
Cons
- No native ARM64 build
In short: JS8Call-improved is an open-source Windows tool for 64-bit PCs. Administrators can deploy it unattended.
Is JS8Call-improved safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
AFFDFABB91D2AA59CB81D6859679CB19E09C18AC00EA1CE9AE0E2730A5A00285· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 7 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 3.0.3Latest | July 13, 2026 | — | 64-bit EXE (Inno Setup) |
| 3.0.2 | May 25, 2026 | — | 64-bit EXE (Inno Setup) |
| 3.0.1 | May 17, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.5.2 | January 29, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.5.1 | January 14, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.5.0 | January 6, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.4.0 | November 4, 2025 | — | 64-bit EXE (Inno Setup) |
Install from the command line
Silent install ›winget install --id JS8Call-improved.JS8Call-improved -eJS8Call-3.0.3-installer.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-Related guide: How to use winget: install and update apps
Information
- Publisher
- Ham Radio
- Licence
- GPL-3.0
- Price
- Free
- Source code
- github.com/JS8Call-improved/JS8Call-improved
- Written in
- C++
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (Inno Setup)
- Version
- 3.0.3
- Released
- July 13, 2026
- Added to the catalogue
- December 23, 2025
- Versions listed
- 7
- GitHub stars
- 90
- GitHub forks
- 25
- Website
- github.com
- winget ID
- JS8Call-improved.JS8Call-improved
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is JS8Call-improved free?
Yes. JS8Call-improved is open-source software under the GPL-3.0 licence.
Is JS8Call-improved safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install JS8Call-improved with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can JS8Call-improved be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does JS8Call-improved run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of JS8Call-improved?
The versions page lists all 7 versions with links to their official installer files, back to November 4, 2025.