Recommended Step Sizes For Various Antennas - RESEARCH CONCEPTS RC2000A DUAL AXIS Instructions Manual

Elevation Angle for satellites
separated from the antenna by
50 degrees longitude.
Recommended Correction
Factor

2.5.5 Recommended Step Sizes for Various Antennas

In the following tables, the first value in each field corresponds to a step size that will result in a 0.5 dB
drop in received signal strength (assuming that the antenna was perfectly aligned with the satellite
before the antenna movement occurred). The second value in each field is the step size that will
correspond a drop in received signal strength of 1.0 dB.
Antenna Type: EASi 4.5 meter ViaSat reflector, Baird mount, 90 volt DC Az/El Motors
Band Elev Step
Size
C Band 22/31
Ku Band 7/10
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas • 66218-9680 • USA
28.0° 26.0°
1.75 1.50
Azimuth and Elevation Step Sizes
Azimuth Step Size vs. Antenna Site Latitude
25 30
degrees degrees
latitude latitude
19/27 16/23
6/9 5/8
23.8° 21.4°
1.40 1.30
(0.5 dB steps/1.0 dB steps)
35 40
degrees degrees
latitude latitude
15/22 14/20
5/7 5/7
www.researchconcepts.com
18.8° 16.1°
1.25 1.10
45 50
degrees degrees
latitude latitude
14/19 12/17
5/6 4/6