Garmin G600 manual Basic Antenna Tilt Setup, Practical Application Using the Basic Tilt Setup

MFD PFD System Foreword

Sec 3 Sec 2 Sec 1

MPEL

Boundary

11’ for 12” antenna

Figure 4-71 MPEL Boundary

Sec 4	Hazard	Avoidance
Sec 5	Additional	Features
Sec 6	Annun. & Alerts
	Sec 7 Symbols
	Sec 8 Glossary
		Appendix A
	Appendix B	Index

4.10.4Basic Antenna Tilt Setup

The following discussion is a simple method for setting up the weather radar antenna tilt for most situations. It is not to be considered an all encompassing setup that will work in all situations, but this method does provide good overall parameters for the monitoring of threats. Ultimately, it is desired to have the antenna tilted so that the bottom of the radar beam is four degrees below parallel with the ground. The following discussion explains one way of achieving this.

With the aircraft flying level, adjust the antenna tilt so ground returns are displayed at a distance that equals the aircraft’s current altitude (AGL) divided by 1,000. For example, if the aircraft is at 14,000 feet, adjust the tilt so the front edge of ground returns are displayed at 14 NM. Note this antenna tilt angle setting. Now, raise the antenna tilt 6º above this setting. The bottom of the radar beam is now angled down 4º from parallel with the ground.

Practical Application Using the Basic Tilt Setup

At this point, when flying at altitudes between 2,000 and 30,000 feet AGL, any displayed target return should scrutinized. If the displayed target advances on the screen to 5 NM of the aircraft, avoid it. This may be either weather or ground returns that are 2,000 feet or less below the aircraft. Raising the antenna tilt 4º can help separate ground returns from weather returns in relatively flat terrain. This will place the bottom of the radar beam level with the ground. Return the antenna tilt to the previous setting after a few sweeps.

4-86 Garmin G600 Pilot’s Guide 190-00601-02 Rev. E