AntScopeZ

A modern antenna-analyzer application for RigExpert & NanoVNA (and a few other brands) – built for, and maintained by, the ham radio community.

Version 2.2.6 Released for Windows & Linux Sept. 11, 2026

Features

• Support of RigExport Analyzers and NanoVNA (ASCII & Binary)
• Autodetect most Analyzers
• Import/Export of Touchstone Files (.asd/.s1p/.s2p/.csv/.nwl)
• Full 2-Port S-Parameter Export (S11/S21/S12/S22)
• Customizable Band Selection and User Presets
• Named Measurements, (load/save/conversions)
• Multiview of plots, synced, …with markers.
• Auto Stitch Feature (~10k Points)
• Dynamic Single Frequency Mode (live SWR/Z monitor)
• Big-Number SWR Readout for One Fq Mode
• Built in Color/Theme Editor
• Marker Comparison and Trim Calculator
• OSL Calibrations and Cable Add/Delete
• Debug Logging for Analyzer Communications
• USB Serial/HID, BLE/Bluetooth and NavoVNA
• TDR Analysis
  • Cable Length <-> Velocity Factor Calculations w/ 150+ Cable Presets
  • Adjustable frequency/points with umabiguous range / resolution indication
  • Selectable windows (Rectangular, Hamming, Hamm, Blackman, Kaiser)
• Language Support: English, Ukrainian, Japanese, Spanish (AI generated)
• …and much more.

Download

⬇ Download the latest release  ·  All releases  ·  Browse the source  ·  Report an issue

Screenshots

An SWR sweep across the 20m band – menu bar, 3-pane layout, docked Cursor Details panel, and band highlighting – Light theme.

Why AntScopeZ?

AntScopeZ is a fork of RigExpert’s own AntScope2 software, renamed and rebuilt to give it its own identity, separate from the vendor’s. Along the way it’s had a steady stream of fixes and new features. – see CHANGELOG.md for the full detail.

This is not an official RigExpert product. It’s an independent, unaffiliated, community effort – see the disclaimer in README.md before relying on it for anything that matters (licensing, firmware updates, warranty support). For those, use RigExpert’s own software – the original AntScope2 is available directly from RigExpert at rigexpert.com/software/antscope2.

Supported devices

AntScopeZ isn’t limited to RigExpert’s own analyzers – NanoVNA and a few other brands are supported too. See the User Guide’s Supported Devices section for the full list. (Disclaimer: most listed devices haven’t been individually tested against this fork.)

Documentation

• User Guide – how to use AntScopeZ (the full supported-device list, TDR scans, customized analyzer parameters, and more as it grows)
• Build Instructions – building from source, Qt version notes, platform-specific detail
• Changelog – what’s changed, release by release
• Third-Party Licenses – full component-by-component license breakdown

License

AntScopeZ is licensed under the GNU General Public License v3.0 or later (COPYING) as a whole, since it bundles GPLv3-licensed components (QCustomPlot, HIDAPI). AntScopeZ’s own code – both the original RigExpert AntScope2 codebase it’s forked from and everything added or modified since – remains separately available under the MIT license (LICENSE.txt). Qt and libusb are used under their LGPL terms, and a Windows-only FTDI driver package is bundled under FTDI’s own proprietary redistribution terms – see THIRD-PARTY-LICENSES.md for the full per-component, per-platform breakdown.

Getting help

This is a volunteer-maintained fork, not a supported product – there’s no SLA and no guarantee of a fix or a timely reply. That said, GitHub Issues is the right place to report a bug or ask a question about this fork specifically. For anything involving RigExpert’s own hardware, firmware, or licensing, contact RigExpert directly – this project has no connection to them and no way to help with those.

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Built with help from Claude (Anthropic’s AI) – docs, this site, and a fair bit of the code itself.