Mmana-gal Antenna Files

To unleash the full potential of this software, you must master its native file format: the file. This comprehensive guide explores the structure of MMANA-GAL antenna files, how to create and modify them, and how to build a high-performance virtual antenna library. What is an MMANA-GAL Antenna File?

Mmana-gal_Antennas/ ├── HF_Bands/ │ ├── 160m_80m/ │ ├── 40m_20m/ │ └── 15m_10m/ ├── VHF_UHF/ │ ├── 6m_2m/ │ ├── 70cm_23cm/ │ └── LFA_Yagis/ ├── Portable/ │ ├── Magnetic_Loops/ │ └── End_Fed_Half_Wave/ ├── Receiving/ │ └── Beverage_Flags/ └── Optimized_With_GAL/ └── (Files modified by genetic algorithm)

For amateur radio enthusiasts and antenna designers, is more than just software; it is a rite of passage. Originally developed by Makoto Mori (JE3HHT) and later refined by Alex Schewelew (DL2KQ) and Igor Gontcharenko (DL1PBD), this MININEC-based tool has become the gold standard for free antenna modeling. mmana-gal antenna files

: Use tools like the Online Polygon Data Generator to create custom .maa data for specific shapes like circles or polygons, which you can then paste into the editor. Sample Structure of a .maa File

Instead of cutting wire and hoping for the best, you can use .maa files to: To unleash the full potential of this software,

✅ – Describe the antenna, date, author, and intended band. ✅ Define the frequency explicitly – Always include the frequency (MHz)= line. ✅ Use real-world wire diameters – 1–2 mm for thin wire, 10–20 mm for thick elements. ✅ Set segmentation to -1 – Let MMANA-GAL decide the segmentation for best speed vs. accuracy. ✅ Place the feed point on a wire segment – Not in free space. ✅ Test for convergence – Run the simulation, then double the number of segments. If results change little, your file is stable.

, MMANA-GAL will treat them as disconnected, causing an open-circuit error in your model. 3. Ignoring the Frequency Scaling Factor Sample Structure of a

| From | To | Method | |------|-----|--------| | .maa | NEC2 .nec | File → Export → NEC2 | | .maa | EZNEC .ez | Not directly – use NEC2 as intermediate | | .maa | 4nec2 .nec | Open in 4nec2 (supports .maa directly) | | .maa | Plain text description | View in Notepad |

: Defines the antenna wires using 3D coordinates ( ) in meters.

MMANA-GAL antenna files ( .maa ) are plain text files that describe an antenna’s structure to the software. When you open a .maa file, MMANA-GAL interprets the text to build a 3D model of your antenna. Structure of a .maa File A .maa file contains several key sections:

: View 3D plots of where your signal is actually going.