Name: Garmin G3X Touch
Brand: Garmin
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190-01115-01 G3X/G3X Touch Installation Manual - GPS/XM Antenna Installation

Rev. AC Page 22-30

Minimum Distance from Metal Tube Structure Requirements

Figure 22-31 shows minimum distance from metal tube structure requirements for internal, non-structural

mounting of the antenna. Table 22-7 presents minimum distance requirements between the tube structure

and the antenna for cases where the antenna sits underneath the fabric in a metal-tube structure aircraft.

Figure 22-31 illustrates the tube diameter (d) and minimum distance (l) references in the Table 22-7.

Figure 22-31 Example Teardrop Footprint Antenna Mounting Under Fabric Skin

Table 22-7 Minimum Distance Required Between Tube Structure and Antenna

Illustrated Case

Tube Diameter

d (in)

Minimum

Distance l (in)

Top of antenna at or above the center of the tube structure

(Figure 22-31, top)

0.625 3.6

0.75 4.3

1.00 5.7

1.25 7.2

Top of antenna between the center and bottom of the tube

structure (Figure 22-31, bottom)

0.625 7.2

0.75 8.6

1.00 11.5

1.25 14.3

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