Garmin G500 Manual
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4-65190-01102-02 Rev. DGarmin G500 Pilot’s Guide ForewordSec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index tion at 15 NM. The curvature of the earth can also be a factor, especially at range settings of 150 NM or more. NM Figure 4-57 Radar Beam in Relation to the Curvature of the Earth 4.9.1.3 Radar Signal Attenuation The phenomena of weather attenuation needs to be kept in...
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4-66Garmin G500 Pilot’s Guide190-01102-02 Rev. D Foreword Sec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index will appear as “shadowed” or gray area on the radar display. Proper use of the antenna tilt control can also help detect radar shadows. Attenuation can also be due to poor maintenance or degradation of the radome. Even the smallest amount of wear...
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4-67190-01102-02 Rev. DGarmin G500 Pilot’s Guide ForewordSec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index 4.9.2.2 Ground Returns The intensity of ground target returns depends upon the angle at which the radar beam strikes the ground target (Angle of Incidence) and the reflective properties of that target. The gain can be adjusted so shorelines, rivers, lakes, and cities are...
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4-68Garmin G500 Pilot’s Guide190-01102-02 Rev. D Foreword Sec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index Figure 4-59 Angle of Incidence A smaller incident angle gives the radar a larger detectable range of opera- tion and the target display will show a higher intensity. Since more radar energy is reflected back to the antenna with a low incident angle, the resulting detectable...
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4-69190-01102-02 Rev. DGarmin G500 Pilot’s Guide ForewordSec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index MPELBou ndary 1 1’ f or 1 2” a ntenna Figure 4-60 MPEL Boundary 4.9.4 Basic 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...
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4-70Garmin G500 Pilot’s Guide190-01102-02 Rev. D Foreword Sec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index If the aircraft is above 29,000 feet, be cautious of any target return that gets to 30 NM or closer. This is likely a thunderstorm that has a top high enough that the aircraft cannot fly over it safely. If the aircraft altitude is 15,000 feet or lower, set the...
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4-71190-01102-02 Rev. DGarmin G500 Pilot’s Guide ForewordSec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index Weather Mode Color GWX 68 Radars 3rd Party Radars Approximate Intensity Approximate Rainfall Rate (in/hr) Radar Return Level (see radar documen- tation for details) BLACK < 23 dBZ < .01 0 GREEN 23 dBZ to < 32 dBZ .01 - 0.1 1 YELLOW 32 dBZ to < 41 dBZ 0.1 - 0.5 2 RED 41 dBZ...
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4-72Garmin G500 Pilot’s Guide190-01102-02 Rev. D Foreword Sec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index Steep Gradient Squall Line Hook or FingerScalloped Edge Figure 4-62 Cell Irregularities Thunderstorm development is rapid. A course may become blocked within a short time. When displaying shorter ranges, periodically select a longer range to see if problems are developing...
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4-73190-01102-02 Rev. DGarmin G500 Pilot’s Guide ForewordSec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index 4.9.5.3 Tornadoes There is no conclusive radar target return characteristics which will identify a tornado, however, tornadoes may be present if the following characteristics are observed: • A narrow, finger-like portion, as shown on the previous page,...
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4-74Garmin G500 Pilot’s Guide190-01102-02 Rev. D Foreword Sec 1 System Sec 2 PFD Sec 3 MFD Sec 4 Hazard Avoidance Sec 5 Additional Features Sec 6 Annun. & Alerts Sec 7 Symbols Sec 8 Glossary Appendix A Appendix B Index These target returns appear quite suddenly along any edge of the cell outline. They also change in intensity and shape in a matter of seconds, making vigilant monitoring essential. 4.9.6 Radar Operation in Weather Mode WARNING: Begin transmitting only when...