== Defining the Transmitter & Receivers ==
For this tutorial lesson, use the Basic Link Wizard to create a vertically polarized half-wave dipole transmitter and a grid of isotropic receivers. Set the Grid Extents equal to 800m, and keep the default values of the other parameters, <i>i.e.</i>, a transmitter height of 10m, receiver height of 1.5m and receiver spacing of 5m. The transmitter base location point radiator associated with the transmitter called "TXP" is originally positioned at (0, 0, 10m). Change its coordinates to (100m, 100m, 10m). At this time the transmitter is hidden under the terrain, and so are a large number of receivers.
<table>
{{Note|The Z-coordinate of a transmitter or a receiver located above a terrain surface is adjusted to the sum of its original height and the terrain elevation at its base location.}}
To get a better view of the relative position of the tranmsitter transmitter and receivers and their corresponding base location pointspoint radiators, click the <b>Right View</b> [[Image:View-right tn.png]] button of the View Toolbar to see a side view of your propagation scene.
<table>
|-
| Total Number of Edges
| 3947,680124
|-
| Total Number of Receivers
|-
| Total Number of Transmitted Rays
| 6440,980500
|}