MMANA-GAL comes with an extensive built-in library of antenna files located in the ANT\ directory of the software installation folder. Explore these folders (divided into HF, VHF, Loops, etc.) to learn modeling shortcuts from master designers.
Verify source is placed on an odd-numbered segment (like center). Avoids offset feedpoint impedance calculations.
This article provides a deep dive into MMANA-GAL antenna files, their internal structure, how to find them, and how to use them to optimize your antenna builds. What is an MMANA-GAL Antenna File (.maa)? mmana-gal antenna files
: Used for exporting calculation results, such as far-field patterns or impedance tables, for use in external graphing software. How to Use .maa Files
Instead of relying on heavy graphical formats, MMANA-GAL uses simple text coordinates and variables. When you open an .maa file, the software reads this text and reconstructs a 3D wireframe model of the antenna, calculates its currents, and simulates its radiation pattern, SWR (Standing Wave Ratio), and gain. MMANA-GAL comes with an extensive built-in library of
Building your own antenna files can be done using two different methods: Method A: Using the Graphical User Interface (GUI) Open MMANA-GAL and navigate to the tab. coordinates for your wires in the table.
When you install MMANA-GAL, the software includes a massive library of default .maa files. Navigate to the installation directory (usually C:\MMANA-GAL\ANT\ ) to find folders organized by antenna type: Dipoles, verticals, and ground planes. HF beams: Yagis, Quad antennas, and log-periodics. VHF/UHF: Collinear arrays, J-poles, and satellite antennas. Online Repositories and Forums Avoids offset feedpoint impedance calculations
An MMANA-GAL antenna file, identified by the .maa file extension, is a plain-text configuration file used by MMANA-GAL. MMANA-GAL is a popular, free antenna analysis software based on the Mini-Numerical Electromagnetics Code (MININEC) engine. The file stores all the critical parameters of an antenna design—including physical geometry, source placement, material properties, and frequency settings—allowing ham radio operators and engineers to simulate, optimize, and share antenna designs.
This cryptic line tells MMANA-GAL how to handle the environment. It defines the ground type (e.g., 2 for real ground), the height above ground ( 10.0 meters), and the target characteristic impedance ( 50.0 ohms). How to Create and Edit Antenna Files in MMANA-GAL
Launch MMANA-GAL, click File > Open , and select your .maa file.
Paste the copied text into the window and click to update the geometry.