RAINFALL
DISPLAY
RATE
LEVEL
MM/HR
4
GREATER
(MAGENTA
THAN
)
50
3
(RED)
12 – 50
2
(YELLOW
4 – 12
1
(GREEN)
1 – 4
0
LESS THAN
(BLACK)
1
Display Levels Related to dBZ Levels (Typical)
THE RADAR IS CALIBRATED FOR CONVECTIVE WEATHER.
STRATIFORM STORMS AT OR NEAR THE FREEZING LEVEL
CAN SHOW HIGH REFLECTIVITY. DO NOT PENETRATE SUCH
TARGETS.
A28–1146–111
REV 2
PRIMUS
RAINFALL
RATE
IN./HR
dBZ
GREATER
GREATER
THAN
THAN
2
53
0.5 – 2
40 – 53
0.17 – 0.5
33 – 40
0.04 – 0.17
23 – 33
LESS THAN
LESS THAN
0.04
23
Table 5–6
WARNING
R
660 Digital Weather Radar System
300 NAUTICAL MILES
MAXIMUM
CALIBRATE
MAXIMUM
D RANGE
CALIBRATE
(NM) 10–IN
D RANGE
AND 12–IN
(NM) 18–IN
FLAT–PLATE
FLAT–PLATE
GREATER
THAN
232
300
130
190
90
130
55
80
–
–
MAXIMUM
CALIBRATE
D RANGE
(NM) 24–IN
FLAT–PLATE
GREATER
THAN
300
230
160
100
–
Radar Facts
5-29