Mmana-gal Antenna Files

To create an antenna file (.maa) for MMANA-GAL, you essentially write a plain-text description of the antenna's physical structure and electrical properties. Quick Template: Simple Dipole (.maa)

Error: “Wire Intersection”

Cause: Two wires cross without a connection. Solution: In the .maa file, ensure intersecting wires share an endpoint exactly (e.g., Wire 1 ends at 0,0,5 and Wire 2 starts at 0,0,5). mmana-gal antenna files

File Structure Overview

A typical .maa file consists of three main sections: To create an antenna file (

Final checklist before building from a model

• Confirm convergence with finer segmentation.
• Verify feed impedance at target frequency and design matching network accordingly.
• Run ground sensitivity: test free-space vs. several ground parameter sets.
• Produce build drawings with absolute coordinates and element supports.
• Save native file, NEC export, and a short build/test log.

You don't always have to start from scratch. The MMANA-GAL installation usually comes with a vast library of pre-configured files. Confirm convergence with finer segmentation

C Full-wave loop for 14.2 MHz
frequency (MHz)=14.2
'wire' 1: -2.6,0,0, 2.6,0,0, 0.002, -1   'bottom
'wire' 2: 2.6,0,0, 2.6,2.6,0, 0.002, -1  'right
'wire' 3: 2.6,2.6,0, -2.6,2.6,0, 0.002, -1 'top
'wire' 4: -2.6,2.6,0, -2.6,0,0, 0.002, -1 'left
'feed' 1: 1, 1, 2, 100  'feed at center of bottom wire

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6. Exchanging Files with Others

• Sharing: Just send the .maa file. It’s plain text and works on all platforms (Windows, Linux via Wine, etc.).
• Importing/Exporting: MMANA-GAL can also import NEC2 .nec files (basic geometry) and export .maa. For complex antennas, start in MMANA-GAL, then export to NEC for more advanced solvers.
• Version notes: MMANA-GAL Basic, PRO, and GAL-ANA all use the same .maa format. Files from older versions (MMANA) may lack the frequency line — add it manually.