Hughes AN6-098P installation manual

5.Install the vertical shim and O-ring in the same location. Because of its shape and alignment pins on the transmit/receive isolation assembly (TRIA), the vertical shim can only be installed in the position shown in Figure 24 (upper right photo). Note the position of the alignment pins. Likewise, the horizontal shim can only be installed in one position.

Because of the shim’s alignment pins, you must rotate the TRIA 90° from its horizontal polarization position. You must rotate the TRIA before you re-attach the waveguide end so you can insert the shim alignment pins into the waveguide end plate. See Figures 25 and 26.

Figure 25: Direction of TRIA rotation for vertical polarization

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Chapter 4 • Installing a J-type radio assembly 1037312-0001 Revision A