User's Guide

DE
DANIELS
ELECTRONICS
VT-3H040 VHF Enhanced Transmitter Instruction Manual iii
TABLE OF CONTENTS
Page
1 GENERAL
1.1 Introduction.................................................................................................... 1-1
1.2 Manual Organization ..................................................................................... 1-1
1.3 VT-3H040 Transmitter Family Models......................................................... 1-2
1.4 Performance Specifications ........................................................................... 1-3
1.4.1 General............................................................................................... 1-3
1.4.2 Audio Specifications.......................................................................... 1-5
1.4.3 Physical Specifications ...................................................................... 1-6
2 SYSTEM OVERVIEW
2.1 Transmitter Operation.................................................................................... 2-1
2.2 Frequency Selection....................................................................................... 2-2
2.3 Transmitter Assembly and Adjustment ......................................................... 2-2
2.3.1 Complete Transmitter Alignment ...................................................... 2-3
2.3.2 Frequency Change ............................................................................. 2-3
2.3.3 Output Power Adjustment.................................................................. 2-4
2.3.4 Deviation Setting ............................................................................... 2-5
2.3.5 Setting RF Alarm Thresholds ............................................................ 2-5
2.4 Recommended Test Equipment List.............................................................. 2-5
2.5 Repair Note .................................................................................................... 2-6
2.6 Printed Circuitboard Numbering Convention................................................ 2-6
3 ILLUSTRATIONS
3.1 MT-3 Transmitter Front Panel....................................................................... 3-1
3.2 MT-3 Transmitter Case - Exploded View ..................................................... 3-2
4 PARTS LISTS ........................................................................................................... 4-1
5 REVISION HISTORY............................................................................................... 5-1
MODULE MANUALS
Transmitter Main Board Instruction Manual ....................................IM20-MT3TXMN
VT3H040 VHF Amplifier Instruction Manual .............................. IM20-VT3040AMP
OS-3A/H Enhanced Synthsizer Instruction Manual 29-470 MHz ......... IM10-OS3AH
VT-3H040 Channel Designation Table ..........................................IM20-VT3H040CT