Mmana-gal Antenna Files

Once you perfect a design, give back to the community. When sharing your MMANA-GAL antenna files, follow these best practices:

Example comment header for a professional file: mmana-gal antenna files

Comment: 2m 5-element Yagi | 144.3 MHz | Gain: 10.9 dBi | SWR: 1.1 | Boom: 2.4m | Element: 6mm Al

The antenna is built using straight wires defined by two endpoints. Once you perfect a design, give back to the community

For engineers who manage many MMANA-GAL antenna files, manual editing is tedious. Because .maa files are text-based, you can script changes using Python or PowerShell. Example comment header for a professional file: Comment:

Example Python snippet to change frequency in 100 .maa files:

import os
for file in os.listdir('.'):
    if file.endswith('.maa'):
        with open(file, 'r') as f:
            data = f.read()
        data = data.replace('Frequency: 14.150', 'Frequency: 14.250')
        with open(file, 'w') as f:
            f.write(data)

This batch processing allows you to retune an entire antenna library for a different band.