Once a file is loaded, you can modify it in the tab. This is where you define the physical structure.
Provides a visual representation of the gain, radiation pattern, and SWR graphs. Tips for Better Simulations mmana-gal antenna files
The .maa file is a plain-text format that stores all the parameters needed for the software to calculate an antenna's performance. When you open a file in MMANA-GAL, it interprets this data to generate a 3D visualization and calculate the feed-point impedance, SWR, gain, and front-to-back ratio. A standard file contains: The X, Y, and Z coordinates of every wire. Source: Where the power is being fed into the antenna. Once a file is loaded, you can modify it in the tab
| Problem | Likely Cause | Solution | |---------|--------------|----------| | | Corrupt or wrong format | Open in text editor; check sections exist | | No radiation pattern | Missing [SOURCE] or ground type "Free space" | Add source; set Ground to "Real" or "Perfect" | | Segmentation error | Too many segments total (>500 default) | Reduce segment count or increase limit in Settings | | Strange gain (0 dBi) | Wires not connected | Check coordinates – ends must touch exactly | | Optimization fails | Impossible goals (e.g., 0.1 m yagi for 80m) | Relax constraints or adjust frequency | Tips for Better Simulations The
For vertical antennas, select "Real Ground" and define the ground radials to get accurate results, particularly for 3D farfield plots.