<table>
<tr>
<td> [[Image:prop_txrx1_tn.png|thumb|400px|Transmitters Transmitter (red) and receivers (yellow) adjusted above an uneven terrain surface.]] </td><td> [[Image:prop_txrx2_tn.png|thumb|400px|The underlying base point sets (blue and orange dots) associated with the adjusted transmitters and receivers on the terrain.]] </td>
</tr>
</table>