Specifications

1.0 Introduction

1.1 This technical manual contains preventive maintenance

information for the 4.5-Meter Transportable

Receive/Transmit Earth Station Antenna (see Figure 1). The

basic equipment and accessories are either manufactured

or design controlled by Andrew Corporation, Orland Park,

Illinois.

1.2 The manual contains all essential information required

for the performance of complete preventive maintenance by

qualified station engineering personnel.

1.3 The operating section includes detailed equipment oper-

ating procedures required during normal system operation,

while the preventive maintenance section enables qualified

personnel to maintain the equipment using standard hand

tools. The drawing section provides installation, mechanical,

electro-mechanical subsystem and subsystem component

reference drawings as an aid for maintenance and opera-

tion. All items covered are designated to be within the oper-

ating and maintenance capabilities of the average station

engineering staff personnel.

Section 1 - Introduction

Figure 1. 4.5-Meter Transportable Receive/Transmit Earth Station Antenna

2.0 General

2.1 The ESA45AA is a Trifold™ 4.5m reflector assembly in-

corporating a manually operated polarization adjustment

device. This reflector assembly accepts all Andrew feed

systems. Only Andrew (TF) feed systems will comply with

electrical specifications in Section 4. When attaching this

assembly to other than an Andrew type positioner, refer to

Figure 2 and instruction drawings 239343 and 239331 for

appropriate reflector/positioner interface and mounting

dimensional details.

2.2 The ESA45AAPT is the same as the ESA45AA above

mounted on a tandem axle trailer. The trailer has four uni-

quely designed outriggers for ultimate pointing accuracy

across the entire range of operation. The trailer has a load

capacity of 10,000 pounds and can be towed by a suffi-

ciently sized vehicle.