Garmin GTX 32 Installation Manual - Page 17
Antenna Location Considerations
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2.3.2 Antenna Location Considerations Antenna mounting should utilize the aircraft manufacturer's Type Certificated antenna location and style of antenna. The antenna installation should be installed in accordance with AC 43.12-2A Chapter 3. Note that penetration of the pressure vessel on the pressurized aircraft requires additional data not contained in this manual (see Section 2.5). Figure 2-1. Antenna Installation Considerations A. The antenna (Garmin P/N 010-10160-00) or equivalent should be mounted away from major protrusions, such as engine(s), propeller(s), and antenna masts. It should also be as far as practical from landing gear doors, access doors or other openings that could affect the radiation pattern. B. The main antenna should be mounted vertically on the bottom of the aircraft. C. Avoid mounting the antenna within three feet of the ADF sense antenna or any other communication antenna and six feet from the DME antenna. D. To prevent RF interference, the antenna must be physically mounted a minimum distance of three feet from the GTX 32. NOTE If the antenna is being installed on a composite aircraft, sufficient ground plane material must be added. Conductive wire mesh, radials, or thin aluminum sheets embedded in the composite material provide the proper ground plane allowing the antenna pattern (gain) to be maximized for optimum transponder performance. GTX 32 Installation Manual 190-00303-60 Page 2-3 Revision F
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