Motorola MTR3000 Basic Service Manual

Table of Contents xiii
Chapter 9 MTR3000 Radio Frequency Distribution System (RFDS)
Equipment .............................................................................................. 9-1
9.1 Description................................................................................................................................... 9-1
9.1.1 General Description......................................................................................................... 9-1
9.1.1.1 Base Station/Repeater Preselectors ................................................................ 9-1
9.1.1.2 Duplexer ........................................................................................................... 9-1
9.1.1.3 External Dual Circulator Tray ........................................................................... 9-2
9.1.1.4 Antenna Relay .................................................................................................. 9-4
9.2 Specifications............................................................................................................................... 9-5
9.2.1 Base Station/Repeater Preselectors ............................................................................... 9-5
9.2.2 Duplexer .......................................................................................................................... 9-5
9.2.3 External Dual Circulator Tray .......................................................................................... 9-6
9.2.4 Antenna Relay ................................................................................................................. 9-7
9.3 Functional Theory of Operation ................................................................................................... 9-8
9.3.1 Base Station/Repeater Preselectors ............................................................................... 9-8
9.3.2 Antenna Relay ................................................................................................................. 9-8
9.3.3 External Dual Circulator Tray .......................................................................................... 9-8
9.3.4 Duplexer .......................................................................................................................... 9-9
9.4 Basic Troubleshooting ................................................................................................................. 9-9
9.4.1 Replacement Procedure.................................................................................................. 9-9
9.4.1.1 Base Station/Repeater Preselectors ................................................................ 9-9
9.4.1.2 Duplexer ........................................................................................................... 9-9
9.4.1.3 External Dual Circulator Tray ......................................................................... 9-10
9.4.1.4 Antenna Relay ................................................................................................ 9-12
9.5 Field Tuning Procedures............................................................................................................ 9-12
9.5.1 Base Station/Repeater Preselectors ............................................................................. 9-12
9.5.1.1 External Preselector Tuning Procedure (with basic instruments) ................... 9-12
9.5.1.1.1 Test Equipment .............................................................................. 9-12
9.5.1.1.2 Calculating Proper Alignment Frequency....................................... 9-13
9.5.1.1.3 Preparing Equipment...................................................................... 9-13
9.5.1.1.4 Tuning Procedure ........................................................................... 9-14
9.5.1.2 External Preselector Tuning Procedure (with advanced instruments)............ 9-16
9.5.1.2.1 Test Equipment .............................................................................. 9-16
9.5.1.2.2 Equipment Setup ............................................................................ 9-16
9.5.1.2.3 Tuning procedures and methods.................................................... 9-17
9.5.2 Duplexer ........................................................................................................................ 9-28
9.5.2.1 Duplexer Tuning Procedure (with basic instruments) ..................................... 9-28
9.5.2.1.1 Test Equipment .............................................................................. 9-28
9.5.2.1.2 Setting Up for Tuning Duplexer ...................................................... 9-29
9.5.2.1.3 Duplexer Tuning Procedure ........................................................... 9-30
9.5.2.2 Duplexer Tuning Procedure (with advanced instruments).............................. 9-36
9.5.2.2.1 Initial Settings ................................................................................. 9-36
9.5.2.2.2 Tuning the LO side ......................................................................... 9-36
9.5.2.2.3 Tuning the HI side .......................................................................... 9-38
9.5.2.2.4 Fine Tuning the Duplexer ............................................................... 9-39

Motorola MTR3000 Specifications

General

Brand	Motorola
Model	MTR3000
Category	Accessories
Language	English