Ocean TV
Ocean Series Antennas
OCEAN TV
13
www.oceantv.com.au
Setting the LNB skew angle (O37M Antenna Only)
Figure 2-3 Satellite signals
Signals transmitted in vertical (red) and horizontal (blue) wave offset exactly 90º from each
other. Since linear satellite signals are oriented in a precise cross pattern, the O45M antenna’s
receiving element, called an LNB (low-noise block) must be oriented in the same way to optiize
reception. This orientation adjustment is referred to as the LNB’s “skew angle.”
Figure 2-4
illustrates how skew determines the amount of signal the LNB collects. The more signal, the bet-
ter the reception.
Figure 2-4 Best Skew Angle
Bad skew
Good skew
Best skew
: LNB “signal collector”
The correct skew setting varies depending on your geographic location, since the orientation of
your antenna to the satellite changes as you move. For complete details about adjusting the
LNB’s skew angle,
see “Appendix A – How to S et the S kew Angle”
All Ocean O37M S kew Angles are preset for Australian East Coast or New Zealand
