A new transmitter set entry is added in the '''Transmitters''' section of the navigation tree. In the Transmitter Set dialog, you can also set the '''Baseband Power''' of your transmitter in Watts and its '''Phase''' in degrees. There is a check box labeled '''Custom Power''', which is checked by default. In that case, the power and phase boxes are enabled and you can change the default 1W power and 0° phase values as you wish. [[EM.Cube]]'s ".RAD" radiation pattern files usually contain the value of "Total Radiated Power" in their file header. This quantity is calculated based on the particular excitation mechanism that was used to generate the pattern file in the original [[EM.Cube]] module. When the "Custom Power" check box is unchecked, EM.Terrano will use the total radiated power value of the radiation file for SBR calculations.
EM.Terrano allows you to define a basic '''Heterodyne Transmitter Chain'''. As shown in the figure below, you can specify the characteristics of the baseband/IF amplifier, mixer and power amplifier (PA) including stage gains and impedance mismatch factors (IMF) as well as the characteristics of the transmission line segment that connects the PA to the antenna. Note that the transmitting antenna characteristics are automatically filled from using contents of the radiation file. The transmitter Chain dialog also calculates and reports the "Total Transmitter Chain Gain" based on your input. When you close this dialog and return to the Transmitter Set dialog, but you can define will see the antenna efficiency as calculated value of the Effective Isotropic Radiated Power (EIRP) of your transmitter in dBm. Â {{Note| If you do not modify the default [[parameters]] of the transmitter chain, a percentageconjugate match condition is assumed and the power delivered to the antenna will be -3dB lower than the specified baseband power. }}
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[[EM.Cube]] can also rotate the imported radiation pattern arbitrarily. In this case, you need to specify the '''Rotation''' angles in degrees about the X-, Y- and Z-axes. Note that these rotations are performed sequentially and in order: first a rotation about the X-axis, then a rotation about the Y-axis, and finally a rotation about the Z-axis.
=== Defining Receiver Sets ===
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=== A Note on the Rotation of Antenna Radiation Patterns ===
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[[EM.Cube]] can also rotate the imported radiation pattern arbitrarily. In this case, you need to specify the '''Rotation''' angles in degrees about the X-, Y- and Z-axes. Note that these rotations are performed sequentially and in order: first a rotation about the X-axis, then a rotation about the Y-axis, and finally a rotation about the Z-axis.
=== Adjustment of Tx/Rx Elevation above a Terrain Surface ===