vi Table of Contents
February 3, 2003 6881076C20-E
6.3.8 Transmitter Test Pattern .................................................................................................6-23
Chapter 7 Encryption ........................................................................... 7-1
7.1 Universal Crypto Module Kits.........................................................................................................7-1
7.1.1 ASTRO Digital Spectra .....................................................................................................7-1
7.1.2 ASTRO Digital Spectra Plus .............................................................................................7-1
7.1.3 Secure Dispatch Operation...............................................................................................7-1
7.1.4 Secure Emergency Operation...........................................................................................7-2
7.2 Load an Encryption Key.................................................................................................................7-2
7.2.1 Model W3..........................................................................................................................7-2
7.2.2 Models W4, W5, W7, and W9...........................................................................................7-3
7.3 Erase a Key ...................................................................................................................................7-3
7.3.1 Model W3..........................................................................................................................7-3
7.3.2 Models W4, W5, W7, and W9...........................................................................................7-4
7.4 Erase a Single Key (Model W3).....................................................................................................7-5
7.5 Erase All Keys................................................................................................................................7-5
7.5.1 Model W3..........................................................................................................................7-5
7.5.2 Models W4, W5, W7, and W9...........................................................................................7-6
7.6 Over-the-Air Rekeying ...................................................................................................................7-6
7.6.1 ASTRO Digital Spectra Model W3....................................................................................7-7
7.6.2 ASTRO Digital Spectra Models W4, W5, W7, and W9.....................................................7-9
7.7 Advanced Secure Operation........................................................................................................7-10
7.7.1 Multikey Operation..........................................................................................................7-10
Chapter 8 Disassembly/Reassembly Procedures ............................. 8-1
8.1 Introduction ....................................................................................................................................8-1
8.2 Replacement Procedures ..............................................................................................................8-1
8.2.1 Required Tools and Supplies............................................................................................8-2
8.2.2 Control Head Boards ........................................................................................................8-2
8.2.2.1 Model W3.................................................................................................................8-2
8.2.2.2 Models W4, W5, and W7 .........................................................................................8-3
8.2.2.3 Model W9.................................................................................................................8-4
8.2.3 Remote Back Housing Interface Board.............................................................................8-5
8.2.3.1 Models W4, W5, and W7 .........................................................................................8-5
8.2.4 Remote Interconnect Board..............................................................................................8-6
8.2.4.1 Low-/Mid-Power Radios...........................................................................................8-6
8.2.4.2 High-Power Radios..................................................................................................8-6
8.2.5 Power Amplifier Board ......................................................................................................8-7
8.2.5.1 Low-/Mid-Power Radios...........................................................................................8-7
8.2.5.2 High-Power Radios..................................................................................................8-7
8.2.5.3 800 MHz Radios ......................................................................................................8-8
8.2.5.3.1 Back-End Removal ...........................................................................................8-8
8.2.5.3.2 PC Board Removal ...........................................................................................8-8
8.2.5.3.3 PC Board Installation ........................................................................................8-9
8.2.5.3.4 Back-End Installation ......................................................................................8-10
8.2.6 VOCON (Vocoder/Controller) Board...............................................................................8-11
8.2.7 Command Board.............................................................................................................8-11
8.2.7.1 Low-/Mid-Power Radios.........................................................................................8-11
8.2.7.2 High-Power Radios................................................................................................8-12
8.2.8 Receiver Front-End Board ..............................................................................................8-13
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