PRIMUSR 660 Digital Weather Radar System
A28–1146–111
REV 2
Radar Facts
5-8
RANGE
SCALE
(NM)
ALTITUDE
(FEET)
25 50 100 200 300 LINE OF
SIGHT
(NM)
40,000
35,000
30,000
25,000
20,000
15,000
10,000
5,000
4,000
3,000
2,000
1,000 +3
–0
+2
+2
+3
+3 +3
+2+2
+2
+3
+3
+1 +2
0+1
–1+1
0+1
+10
+1–1
246
230
213
195
174
151
123
87
78
67
55
39
(LINE OF SIGHT LIMITED REGION)
(TILT LIMITED
REGION)
AD–29830–R2@
510
–2
–3
–4
–2
–4
–6
–8
–10
–12
+3
–6
–1
0
+1
+2
–11
+2
–5
–4
–2
0
Approximate Tilt Setting for Minimal Ground Target Display12–Inch RadiatorTable 5–1 Tilt angles shown are approximate. Where the tilt angle is not listed, theoperator must exercise good judgment.NOTE: The line of sight distance is nominal. Atmospheric conditionsand terrain offset this value.