Mmana-gal Antenna Files -

: A public repository containing a collection of antenna simulation files for both MMANA-GAL and 4NEC2.

For vertical antennas, select "Real Ground" and define the ground radials to get accurate results, particularly for 3D farfield plots.

This guide explains how to use, create, and find MMANA-GAL antenna files to optimize your antenna designs. 1. What Are MMANA-GAL Antenna Files?

The source is placed at a voltage node. Solution: Move the source to a current maximum (e.g., center of dipole). mmana-gal antenna files

MMANA-GAL models assume bare copper wire in a vacuum. If you plan to build your antenna using insulated wire (like PVC-jacketed stranded wire), the physical antenna will need to be roughly 2% to 5% shorter than the file dictates.

This format focuses strictly on the physical structure and wire elements, allowing designers to import or export shapes without carrying over frequency or source data.

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. : A public repository containing a collection of

You can manually build these files using the within the MMANA-GAL software .

Mastering transforms you from a casual user into an efficient antenna designer. Whether you are downloading a ready-made Yagi file from DL7APV, manually tweaking wire coordinates in a text editor, or batch-processing a library for a new band, understanding the .maa format gives you full control.

Websites like CQHAM, Funkamateur, and various personal ham radio blogs offer downloadable .maa packages for specialized builds like Moxon rectangles, SteppIR clones, and multi-band OCF dipoles. Solution: Move the source to a current maximum (e

: Many files come "pre-optimized." You can use the software’s "Auto-Optimization" tool to tweak a shared file for your specific frequency of interest (e.g., shifting a 20m dipole to be resonant at 14.150 MHz).

This is the core of the file. It defines the physical structure of the antenna using a 3D Cartesian coordinate system ( ). Each wire in the antenna is assigned a row containing: Start Coordinates (

| Source | Format | Notes | |--------|--------|-------| | | .maa | Comes with ~30 example antennas (dipole, yagi, quad, etc.) | | Antenna enthusiast sites (e.g., DL6WU, VE3SQB) | .maa or .txt | Rename .txt to .maa if needed | | Ham radio forums (QRZ, eHam, Reddit r/amateurradio) | .maa | Often in zip files | | Your own designs | .maa | File > Save As in MMANA-GAL |

If you manually edit a text file and leave the wire segmentation column blank or set to 0 , MMANA-GAL will fail to compute. Always ensure your wires have adequate segments (typically at least 5 to 10 segments per quarter-wavelength). 2. Misaligned Wire Junctions

: Controls how the program divides wires into smaller segments for calculation. : Automatic regular segmentation.