Comtech EF Data VMS v3.12.x Vipersat - Manual (Page 408)

Using Antenna Visibility MN/22156, rev 12
B-6 VMS User Guide
Using the visibility Subtract function, a new block for this area of interference
can be created for the remote antenna, as shown in the figure below.
Figure B-8 Visibility Subtract dialog
The revised visibility map now shows a visibility block between 12.1245 GHz
and 12.1255 GHz which represents the bottom 1 MHz portion of the pool expe-
riencing ground interference.
Figure B-9 Visibility Ranges with Blocks