: Use the built-in Optimizer to let the software automatically adjust wire lengths for the best SWR or Gain.
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.
Antenna modeling shifted from a luxury to a necessity for modern amateur radio operators and RF engineers. Among the various software options available, MMANA-GAL remains a highly popular, free, and incredibly powerful tool for analyzing wire antennas. Central to using this software effectively is understanding (typically saved with the .maa extension).
How many tiny segments the wire is broken into for the calculation engine. 3. Source (Feed Point) Section mmana-gal antenna files
For those interested in creating their own MMANA-GAL antenna files, here are some general guidelines:
Many downloaded .maa files use standard metric wire radiuses (e.g., 1mm or 2mm). If you are building the antenna using American Wire Gauge (AWG) copper wire, you must update the radius column in the tab. Failing to adjust this will cause slight shifts in resonant frequency and SWR in your real-world build. Moving from Free Space to Real Ground
Ensure that wires meeting at an intersection share the exact same coordinate point down to the millimeter. Gaps will cause simulation errors. : Use the built-in Optimizer to let the
The use of MMANA-GAL antenna files offers several advantages:
Specifies the number of wires (3). Each line below it defines X1, Y1, Z1, X2, Y2, Z2, radius, segmentation_type .
NEC2 files ( .nec ) can be imported but not saved back to .maa without losing some data. navigate to the tab. Here
Ensure your segment lengths are always significantly larger than the wire diameter. Check the Segmentation settings in the geometry tab. Disconnected Wires
[COPPER] 0.001, 0.0005 [WIRES] 0, -5.05, 0, 0, 0, 0, 0.001 0, 0, 0, 0, 5.05, 0, 0.001 [SOURCE] 1, 1, 0, 1.0, 50.0 [GROUND] 1, 0.005, 0.000 [FREQUENCY] 14.150
The 3D coordinates (X, Y, Z) of every wire segment.
Once calculated, navigate to the tab. Here, you can view the 2D and 3D radiation patterns. Look for the elevation angle (take-off angle) to determine if the antenna is suited for long-distance DX communications or local NVIS coverage. 5. Advanced Optimization: Tailoring the Files to Your Needs
: Use the built-in Optimizer to let the software automatically adjust wire lengths for the best SWR or Gain.
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.
Antenna modeling shifted from a luxury to a necessity for modern amateur radio operators and RF engineers. Among the various software options available, MMANA-GAL remains a highly popular, free, and incredibly powerful tool for analyzing wire antennas. Central to using this software effectively is understanding (typically saved with the .maa extension).
How many tiny segments the wire is broken into for the calculation engine. 3. Source (Feed Point) Section
For those interested in creating their own MMANA-GAL antenna files, here are some general guidelines:
Many downloaded .maa files use standard metric wire radiuses (e.g., 1mm or 2mm). If you are building the antenna using American Wire Gauge (AWG) copper wire, you must update the radius column in the tab. Failing to adjust this will cause slight shifts in resonant frequency and SWR in your real-world build. Moving from Free Space to Real Ground
Ensure that wires meeting at an intersection share the exact same coordinate point down to the millimeter. Gaps will cause simulation errors.
The use of MMANA-GAL antenna files offers several advantages:
Specifies the number of wires (3). Each line below it defines X1, Y1, Z1, X2, Y2, Z2, radius, segmentation_type .
NEC2 files ( .nec ) can be imported but not saved back to .maa without losing some data.
Ensure your segment lengths are always significantly larger than the wire diameter. Check the Segmentation settings in the geometry tab. Disconnected Wires
[COPPER] 0.001, 0.0005 [WIRES] 0, -5.05, 0, 0, 0, 0, 0.001 0, 0, 0, 0, 5.05, 0, 0.001 [SOURCE] 1, 1, 0, 1.0, 50.0 [GROUND] 1, 0.005, 0.000 [FREQUENCY] 14.150
The 3D coordinates (X, Y, Z) of every wire segment.
Once calculated, navigate to the tab. Here, you can view the 2D and 3D radiation patterns. Look for the elevation angle (take-off angle) to determine if the antenna is suited for long-distance DX communications or local NVIS coverage. 5. Advanced Optimization: Tailoring the Files to Your Needs