Dawn CONTROL-1500A Manual page 30

CONTROL-1500A Single Axis Antenna Controller
ANTENNA LATITUDE + DELTA ... where DELTA is a small angle that varies with antenna
latitude. Table 3.3 xx provides values for DELTA as a function of antenna latitude. The
Latitude Angle is often adjusted with a threaded rod.
The Declination Angle is a function of antenna latitude. Table 3.3 xx provides values of the
Declination Angle as a function of antenna latitude. Many mounts provide a precise
adjustment of Declination Angle
East – West Bearing Angle adjustment is typically accomplished by rotating the mount's
'mounting base' or 'can' about the pipe or kingpost the antenna is mounted on.
Antenna Latitude
(degrees)
5
10
15
20
25
30
35
40
45
DAWNco • 3340 S. Lapeer Rd • Orion, MI 48359-1320 • Ph (248) 391-9200 • Fax (248) 391-9207 • sales@DAWNco.com
Figure 3.5
Table 3.3 Polar Mount Latitude and Declination Angles
Delta Angle (degrees) Latitude Angle
0.11
0.24
0.35
0.44
0.53
0.60
0.65
0.68
0.69
Chapter 3
Polar Angle
Declination
Latitude Angle
East−West Bearing
POLAR MOUNT GEOMETRY
(degrees)
5.1
10.2
15.3
20.4
25.5
30.6
35.6
40.7
45.7
Installation/Setup
Declination (degrees)
0.76
1.51
2.26
2.98
3.68
4.34
4.97
5.56
6.11
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