Motorola HT 1000 Series - Model Numbering System; Type of Unit (Position 1); Model Series (Positions 2 & 3); Frequency Band (Position 4)

LIST OF TABLES................................................................................................................................................... iii
LIST OF FIGURES................................................................................................................................................. iii
RELATED PUBLICATIONS AVAILABLE SEPARATELY ...................................................................................... iii
GLOSSARY OF TERMS........................................................................................................................................ iv
INTRODUCTION
I. PURPOSE .......................................................................................................................................................1
II. DESCRIPTION ................................................................................................................................................1
A. General......................................................................................................................................................1
B. Printed Circuit Boards and Flexible Circuits ..............................................................................................1
THEORY OF OPERATION (BASIC FUNCTIONAL DESCRIPTION)
I. INTRODUCTION .............................................................................................................................................2
II. RADIO POWER...............................................................................................................................................2
A. General......................................................................................................................................................2
B. B+ Routing and DC Voltage Distribution (for a Closed Architecture Controller and a
VHF or UHF Transceiver) ...................................................................................................................2
C. B+ Routing and DC Voltage Distribution (for an Open Architecture Controller and an
800 or 900MHz Transceiver)...............................................................................................................2
III. VHF/UHF TRANSCEIVER BOARD.................................................................................................................4
A. Frequency Generation Unit (See Figure 2) ...............................................................................................4
B. Antenna Switch..........................................................................................................................................4
C. Receiver Front End (See Figure 3)............................................................................................................4
D. Receiver Back End (See Figure 3)............................................................................................................5
E. Transmitter (See Figure 4) ........................................................................................................................5
IV. 800/900MHz TRANSCEIVER BOARD ............................................................................................................6
A. Frequency Generation Unit (See Figure 5) ...............................................................................................6
B. Antenna Switch..........................................................................................................................................6
C. Receiver Front End (See Figure 6)............................................................................................................6
D. Receiver Back End (See Figure 6)............................................................................................................7
E. Transmitter (See Figure 7) ........................................................................................................................7
V. CLOSED ARCHITECTURE CONTROLLER ...................................................................................................8
A. General (See Figure 8)..............................................................................................................................8
B. Digital Architecture ....................................................................................................................................8
C. Audio Signalling Architecture.....................................................................................................................8
VI. OPEN ARCHITECTURE CONTROLLER........................................................................................................8
A. General (See Figure 9)................................................................................................................................8
B. Digital Architecture ....................................................................................................................................9
C. Audio Signalling Architecture.....................................................................................................................9
Theory/Troubleshooting Manual
6881200C15-A
HT 1000
TM
, MT 2000
TM
,
MTS 2000
TM
, and MTX Series
Handie-Talkie
®
Portable Radios
CONTENTS
TITLE PAGE
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