
The radar systems are as follows:

SPY-1A      (3-D)
SPS-49(V)6  (AIR SRCH)
SPS-55      (SURFACE SRCH)

When a radar system has been selected, that system will be highlighted by 
a green color, and the "ON" button will be highlighted next to that 
system. Beneath the radar system is a range mode, ranging from 1 to 4. 
These range modes vary according to the actual system being used. To 
change the range mode, click on the mode desired. Press upper case "R" to 
scroll from right to left, and lower case "r" to scroll from left to 
right. Using either keystroke will wrap around the other end of the number
sequence.

