INSTALLATION AS A SEPARATE COMPONENT

TM 1 1 - 5 8 2 0 - 9 2 1 - 4 0 - 1

1-35. INSTALLATION AS A SEPARATE COMPONENT

1-36. Subsequent paragraphs l-37 through l-42 describe the installation procedures for the power

amplifier as a separate component.

1-37. INSTALLATION CONSIDERATIONS

1-38. The following considerations should be made when determining the proper location of the power

amplifier:

a. Best operating conditions.

b. Ease of maintenance, adjustment of equipment and replacement and repair of defective parts or

complete subassemblies.

c. The possible interaction between the power amplifier and other electronic equipment in the

vicinity.

Availability of adequate power.

Availability of adequate grounding.

1-39. POWER AMPLIFIER MOUNTING INSTRUCTIONS

1-40. The following instructions describe how, to mount the power amplifier using power amplifier

Mount MT-4497/GRC- 193 (RF Part No. 755017A9015). Refer to figures 1-6 and 1-7 for dimensional

details.

1. The exact method of mounting the power amplifier depends on the type of installation. Make sure

that the surface selected allows adequate room for power amplifier ventilation intakes and outlets and

proper clearance for cable interconnection.

2. Refer to figure 1-7 and mark off the four mounting hole centers on the mounting surface.

3. Secure the power amplifier mount to the mounting surface using appropriate hardware. The hard-

ware selected should be of the appropriate type for the 0.375 inch (0.95 cm) mounting holes. Since the

power amplifier weighs approximately 54 pounds (24.5 kg), the screws, washers and lock washers used

should be of the appropriate type to secure the lower mounting tray to the mounting surface.

1-41. CABLE ASSEMBLIES

1-42. Variations among installations will determine the lengths of the cables connecting the power

amplifier to the system antenna coupler, the input power source, and the receiver-transmitter. Refer to

table 1-3 for the identification and types of cables and cable connectors required for use with the power

amplifier. Table 1-4 identifies the pins on the power amplifier interface cables for cable fabrication

reference.

1-43. PREOPERATIONAL SERVICING

1-44. No preoperational servicing procedures apply other than removal of the plastic connector caps prior

to assembling cables to the power amplifier connectors. Retain plastic caps for future relocation and

storage purposes.