Properties of Arms

Define the properties of the antenna arm.

Figure 1. Settings of an arm in the MASC configuration (red part only visible if the arm is mounted at a wall).

Geometry of Arms

The arm is not a single arm. It is doubled, and the two parts (both marked with A in the figure) are vertically mounted above each other.

The distance between the two mounting points can be defined in the Geometry section of the dialog together with the length of the arms.

Figure 2. Arms (A) mounted at a mast (M).

The height parameter is used for relative vertical adjustment of the antennas at the mast or wall. Especially the differences between the heights of the arms are more important than the absolute values.

The azimuth of the arm must be specified. 0° is north, 90° is east. Orientation is clockwise.

In wall configurations, you must specify the distance between the antenna and the wedge of the wall additionally.

Geometry of Tube

The tube can either have a rectangular cross-section or circular cross-section (to be approximated with a polygon with a user-defined number of corners).

The length of the tube must also be specified. The tube is always vertically centered between the two arms.

Material Properties

The material properties of the arms and the tube are assumed to be identical and can be defined via the Material button in the Material Properties section.

Figure 3. Material properties of arms and tube.

Figure 4. Material properties to be defined for arms and tube.


In the antenna section, different antennas can be added to the arm / tube. Or they can be deleted and removed from this arm. And of course, it is possible to edit the properties of the antenna.