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2.3.1.4

Marker Beacon Antenna Cable Installation

This section provides guidance for terminating the coaxial cable into the D-Sub connector. See the

system interconnect section for pin assignments.

Use coaxial cable meeting the applicable aviation regulation for the marker beacon

antenna. Route the cable to the D-Sub as described in Section 2.3.1.3.

When terminating the coaxial cable into the D-Sub observe the following guidance (refer to Figure 2-1):

• Keep the distance from the end of the exposed shield to D-Sub as short as possible.

• Ensure the distance from the beginning of the exposed shield to D-Sub is no more than

1.5 inches long.

• Terminate the center conductor by directly connecting it to the D-sub through a crimp pin

without a pigtail.

Figure 2-1 below represents a suggested method for terminating the marker beacon coaxial cable using

M17/128-RG400 terminated into a 78 Pin high density D-Sub connector. Refer to Table 2-1 for Crimp

Tool, Pin, and Crimp Tool Insert part numbers.

Figure 2-1. GMA Marker Beacon Coaxial Cable D-Sub Termination

CRIMP TOOL

DANIELS MANUFACTURING CORP

DMC M22520/2-01 GAGE

AFM8 CRIMPING TOOL

GMA 1347D Installation Manual

190-00303-21

NOTE

Table 2-1. Pin and Crimp Tool Part Numbers

Garmin Part Number

336-00021-00

336-00044-00

CRIMP TOOL INSERT

K42

K774

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Revision C