NavCom SF-3040 Rev.F - Manual (Page 150)

SF-3040 Product User Guide
– Rev. F
B-148

To achieve the greatest level of accuracy,
the absolute phase center values must be
incorporated into your processing. Phase
center information on this antenna is found
on our web site:
http://www.navcomtech.com/Support/Downl
oadCenter.cfm?category=antenna
Radiation Pattern
Figure 59: SF-3040 Antenna Polar Plot
(Radiation Pattern)
Optimal antenna performance is realized at
elevations greater than 30º.

There is a 10dB variation between 0º and 90º
elevation (factor 10x); therefore, lower
elevation satellites are always more difficult to
track.

There is a 5dB variation between ~35º and 0º
elevation (factor >3x)