Table of Contents iii
Table of Contents
Model Numbering, Charts, and Specifications...........................................ix
Portable Radio Model Numbering System .................................................................................................ix
ASTRO APX 2000/ APX 4000 (Two Knobs) VHF Model Chart..................................................................xi
ASTRO APX 2000/ APX 4000 (Two Knobs) VHF Model Chart (Continued)............................................. xii
ASTRO APX 2000/ APX 4000 (Two Knobs) UHF1 Model Chart ............................................................. xiii
ASTRO APX 2000/ APX 4000 (Two Knobs) UHF1 Model Chart (Continued).......................................... xiv
ASTRO APX 2000/ APX 4000 (Two Knobs) UHF2 Model Chart ..............................................................xv
ASTRO APX 2000/ APX 4000 (Two Knobs) UHF2 Model Chart (Continued).......................................... xvi
ASTRO APX 2000/ APX 4000 (Two Knobs) 700/800 MHz Model Chart ................................................ xvii
ASTRO APX 2000/ APX 4000 (Two Knobs) 700/800 MHz Model Chart (Continued)............................ xviii
Specifications for APX 2000/ APX 4000 (Two Knobs) VHF Radios ......................................................... xix
Specifications for APX 2000/ APX 4000 (Two Knobs) UHF1 Radios........................................................xx
Specifications for APX 2000/ APX 4000 (Two Knobs) UHF2 Radios....................................................... xxi
Specifications for APX 2000/ APX 4000 (Two Knobs) 700/800 MHz Radios.......................................... xxii
Chapter 1 Introduction ......................................................................... 1-1
1.1 Manual Contents............................................................................................................................ 1-1
1.2 Notations Used in This Manual...................................................................................................... 1-1
1.3 Radio Description .......................................................................................................................... 1-2
1.4 FLASHport
®
................................................................................................................................... 1-2
Chapter 2 Basic Maintenance.............................................................. 2-1
2.1 General Maintenance .................................................................................................................... 2-1
2.2 Safe Handling of CMOS and LDMOS Devices.............................................................................. 2-1
Chapter 3 Basic Theory of Operation ................................................. 3-1
3.1 Major Assemblies .......................................................................................................................... 3-2
3.2 Analog Mode of Operation............................................................................................................. 3-3
3.3 Digital (ASTRO) Mode of Operation .............................................................................................. 3-8
3.4 Controller Section .......................................................................................................................... 3-8
Chapter 4 Recommended Test Equipment and Service Aids .......... 4-1
4.1 Recommended Test Equipment .................................................................................................... 4-1
4.2 Service Aids................................................................................................................................... 4-2
4.3 Field Programming ........................................................................................................................ 4-2