Open NEC2 Viewer

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About this app

OpenNEC2 Viewer is a tool for viewing and 3D visualizing NEC antenna model files directly on your Android device.

The app combines the powerful NEC2 computational engine with the fast Google Filament renderer to deliver calculation accuracy alongside clear 3D modeling.

Key features:

• Calculation of antenna geometric parameters and characteristics across a specified frequency range
• Full wave electromagnetic analysis using the Method of Moments
• Interactive 3D visualization to view antenna structure, segmentation, and wireframes
• Parameter analysis including calculation of radiation patterns, gain, VSWR, and input impedance
• Flexible calculation settings to control scan step, frequency range, and control cards

Who this app is for:

The app is built for radio engineers, antenna developers, ham radio operators, and students who need a reliable electromagnetic modeling tool on hand.

Open Source:

The app is open source software distributed under the GNU General Public License v3.0.
View NEC2 antenna models and radiation patterns in interactive 3D space
Updated on
Sep 5, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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What’s new

Initial Release / Launch Version
NEC2 Engine: Full-wave electromagnetic analysis powered by the native nec2++ computational library using the Method of Moments
Parametric Analysis: Real-time calculation of radiation patterns (RP), antenna gain, VSWR, and input impedance